DISEASES OF ORAL CAVITY, SALIVARY GLANDS, AND JAWS (520-529)

520	Disorders of tooth development and eruption
520.0	Anodontia
Absence of teeth (complete) (congenital) (partial)
Hypodontia
Oligodontia
Excludes:	acquired absence of teeth (525.10-525.19)
520.1	Supernumerary teeth
Distomolar
Fourth molar
Mesiodens
Paramolar
Supplemental teeth
Excludes:	supernumerary roots (520.2)
520.2	Abnormalities of size and form
Concrescence of teeth
Fusion of teeth
Gemination of teeth
Dens evaginatus
Dens in dente
Dens invaginatus
Enamel pearls
Macrodontia
Microdontia
Peg-shaped [conical] teeth
Supernumerary roots
Taurodontism
Tuberculum paramolare
Excludes:	that due to congenital syphilis (090.5)
tuberculum Carabelli, which is regarded as a normal variation
520.3	Mottled teeth
Dental fluorosis
Mottling of enamel
Nonfluoride enamel opacities
520.4	Disturbances of tooth formation
Aplasia and hypoplasia of cementum
Dilaceration of tooth
Enamel hypoplasia (neonatal) (postnatal) (prenatal)
Horner's teeth
Hypocalcification of teeth
Regional odontodysplasia
Turner's tooth
Excludes:	Hutchinson's teeth and mulberry molars in congenital syphilis (090.5)
mottled teeth (520.3)
520.5	Hereditary disturbances in tooth structure, not elsewhere classified
Amelogenesis imperfecta
Dentinogenesis imperfecta
Odontogenesis imperfecta
Dentinal dysplasia
Shell teeth
520.6	Disturbances in tooth eruption
Teeth:
embedded
impacted
natal
neonatal
prenatal
primary [deciduous]:
persistent
shedding, premature
Tooth eruption:
late
obstructed
premature
Excludes: exfoliation of teeth (attributable to disease of surrounding tissues) (525.0-525.19)
520.7	Teething syndrome
520.8	Other specified disorders of tooth development and eruption
Color changes during tooth formation
Pre-eruptive color changes
Excludes:	posteruptive color changes (521.7)
520.9	Unspecified disorder of tooth development and eruption
521	Diseases of hard tissues of teeth
521.0	Dental caries
521.00	Dental caries, unspecified
521.01	Dental caries limited to enamel
Initial caries
White spot lesion
521.02	Dental caries extending into dentine
521.03	Dental caries extending into pulp
521.04	Arrested dental caries
521.05	Odontoclasia
Infantile melanodontia
Melanodontoclasia
Excludes:	internal and external resorption of teeth (521.40-521.49)
521.06	Dental caries pit and fissure
Primary dental caries, pit and fissure origin
521.07	Dental caries of smooth surface
Primary dental caries, smooth surface origin
521.08	Dental caries of root surface
Primary dental caries, root surface
521.09	Other dental caries
521.1	Excessive attrition (approximal wear) (occlusal wear)
521.10	Excessive attrition, unspecified
521.11	Excessive attrition, limited to enamel
521.12	Excessive attrition, extending into dentine
521.13	Excessive attrition, extending into pulp
521.14	Excessive attrition, localized
521.15	Excessive attrition, generalized
521.2	Abrasion
Abrasion of teeth:
dentifrice
habitual
occupational
ritual
traditional
Wedge defect NOS of teeth
521.20	Abrasion, unspecified
521.21	Abrasion, limited to enamel
521.22	Abrasion, extending into dentine
521.23	Abrasion, extending into pulp
521.24	Abrasion, localized
521.25	Abrasion, generalized
521.3	Erosion
Erosion of teeth:
NOS
due to:
medicine
persistent vomiting
idiopathic
occupational
521.30	Erosion, unspecified
521.31	Erosion, limited to enamel
521.32	Erosion, extending into dentine
521.33	Erosion, extending into pulp
521.34	Erosion, localized
521.35	Erosion, generalized
521.4	Pathological resorption
521.40	Pathological resorption, unspecified
521.41	Pathological resorption, internal
521.42	Pathological resorption, external
521.49	Other pathological resorption
Internal granuloma of pulp
521.5	Hypercementosis
Cementation hyperplasia
521.6	Ankylosis of teeth
521.7	Intrinsic posteruptive color changes
Staining [discoloration] of teeth:
NOS
due to:
drugs
metals
pulpal bleeding
Excludes:	accretions [deposits] on teeth (523.6)
extrinsic color changes (523.6)
pre-eruptive color changes (520.8)
521.8	Other specified diseases of hard tissues of teeth
521.81	Cracked tooth
Excludes:	asymptomatic craze lines in enamel - omit code
broken tooth due to trauma (873.63, 873.73)
fractured tooth due to trauma 873.63, 873.73
521.89	Other specified diseases of hard tissues of teeth
Irradiated enamel
Sensitive dentin
521.9	Unspecified disease of hard tissues of teeth
522	Diseases of pulp and periapical tissues
522.0	Pulpitis
Pulpal:
abscess
polyp
Pulpitis:
acute
chronic (hyperplastic) (ulcerative)
suppurative
522.1	Necrosis of the pulp
Pulp gangrene
522.2	Pulp degeneration
Denticles
Pulp calcifications
Pulp stones
522.3	Abnormal hard tissue formation in pulp
Secondary or irregular dentin
522.4	Acute apical periodontitis of pulpal origin
522.5	Periapical abscess without sinus
Abscess:
dental
dentoalveolar
Excludes:	periapical abscess with sinus (522.7)
522.6	Chronic apical periodontitis
Apical or periapical granuloma
Apical periodontitis NOS
522.7	Periapical abscess with sinus
Fistula:
alveolar process
dental
522.8	Radicular cyst
Cyst:
apical (periodontal)
periapical
radiculodental
residual radicular
Excludes:	lateral developmental or lateral periodontal cyst (526.0)
522.9	Other and unspecified diseases of pulp and periapical tissues
523	Gingival and periodontal diseases
523.0	Acute gingivitis
Excludes:	acute necrotizing ulcerative gingivitis (101)
herpetic gingivostomatitis (054.2)
523.00	Acute gingivitis, plaque induced
Acute gingivitis NOS
523.01	Acute gingivitis, non-plaque induced
523.1	Chronic gingivitis
Gingivitis (chronic):
desquamative
hyperplastic
simple marginal
ulcerative
Excludes:	herpetic gingivostomatitis (054.2)
523.10	Chronic gingivitis, plaque induced
Chronic gingivitis NOS
Gingivitis NOS
523.11	Chronic gingivitis, non-plaque induced
523.2	Gingival recession
Gingival recession (postinfective) (postoperative)
523.20	Gingival recession, unspecified
523.21	Gingival recession, minimal
523.22	Gingival recession, moderate
523.23	Gingival recession, severe
523.24	Gingival recession, localized
523.25	Gingival recession, generalized
523.3	Aggressive and acute periodontitis
Acute:
pericementitis
pericoronitis
Excludes:	acute apical periodontitis (522.4)
periapical abscess (522.5, 522.7)
523.30	Aggressive periodontitis, unspecified
523.31	Aggressive periodontitis, localized
Periodontal abscess
523.32	Aggressive periodontitis, generalized
523.33	Acute periodontitis
523.4	Chronic periodontitis
Chronic pericoronitis
Pericementitis (chronic)
Periodontitis:
NOS
complex
simplex
Excludes:	chronic apical periodontitis (522.6)
523.40	Chronic periodontitis, unspecified
523.41	Chronic periodontitis, localized
523.42	Chronic periodontitis, generalized
523.5	Periodontosis
523.6	Accretions on teeth
Dental calculus:
subgingival
supragingival
Deposits on teeth:
betel
materia alba
soft
tartar
tobacco
Extrinsic discoloration of teeth
Excludes:	intrinsic discoloration of teeth (521.7)
523.8	Other specified periodontal diseases
Giant cell:
epulis
peripheral granuloma
Gingival:
cysts
enlargement NOS
fibromatosis
Gingival polyp
Periodontal lesions due to traumatic occlusion
Peripheral giant cell granuloma
Excludes:	leukoplakia of gingiva (528.6)
523.9	Unspecified gingival and periodontal disease
524	Dentofacial anomalies, including malocclusion
524.0	Major anomalies of jaw size
Excludes:	hemifacial atrophy or hypertrophy (754.0)
unilateral condylar hyperplasia or hypoplasia of mandible
524.00	Unspecified anomaly
524.01	Maxillary hyperplasia
524.02	Mandibular hyperplasia
524.03	Maxillary hypoplasia
524.04	Mandibular hypoplasia
524.05	Macrogenia
524.06	Microgenia
524.07	Excessive tuberosity of jaw
Entire maxillary tuberosity
524.09	Other specified anomaly
524.1	Anomalies of relationship of jaw to cranial base
524.10	Unspecified anomaly
Prognathism
Retrognathism
524.11	Maxillary asymmetry
524.12	Other jaw asymmetry
524.19	Other specified anomaly
524.2	Anomalies of dental arch relationship
Anomaly of dental arch
Excludes:	hemifacial atrophy or hypertrophy (754.0)
soft tissue impingement (524.81-524.82)
unilateral condylar hyperplasia or hypoplasia of mandible (526.89)
524.20	Unspecified anomaly of dental arch relationship
524.21	Malocclusion, Angle's class I
Neutro-occlusion
524.22	Malocclusion, Angle's class II
Disto-occlusion Division I
Disto-occlusion Division II
524.23	Malocclusion, Angle's class III
Mesio-occlusion
524.24	Open anterior occlusal relationship
Anterior open bite
524.25	Open posterior occlusal relationship
Posterior open bite
524.26	Excessive horizontal overlap
Excessive horizontal overjet
524.27	Reverse articulation
Anterior articulation
Crossbite
Posterior articulation
524.28	Anomalies of interarch distance
Excessive interarch distance
Inadequate interarch distance
524.29	Other anomalies of dental arch relationship
Other anomalies of dental arch
524.3	Anomalies of tooth position of fully erupted teeth
Excludes:	impacted or embedded teeth with abnormal position of such teeth or
 adjacent teeth (520.6)
524.30	Unspecified anomaly of tooth position
Diastema of teeth NOS
Displacement of teeth NOS
Transposition of teeth NOS
524.31	Crowding of teeth
524.32	Excessive spacing of teeth
524.33	Horizontal displacement of teeth
Tipped teeth
Tipping of teeth
524.34	Vertical displacement of teeth
Extruded tooth
Infraeruption of teeth
Intruded tooth
Supraeruption of teeth
524.35	Rotation of tooth/teeth
524.36	Insufficient interocclusal distance of teeth (ridge)
Lack of adequate intermaxillary vertical dimension
524.37	Excessive interocclusal distance of teeth
Excessive intermaxillary vertical dimension
Loss of occlusal vertical dimension
524.39	Other anomalies of tooth position
524.4	Malocclusion, unspecified
524.5	Dentofacial functional abnormalities
524.50	Dentofacial functional abnormality, unspecified
524.51	Abnormal jaw closure
524.52	Limited mandibular range of motion
524.53	Deviation in opening and closing of the mandible
524.54	Insufficient anterior guidance
Insufficient anterior occlusal guidance
524.55	Centric occlusion maximum intercuspation discrepancy
Centric occlusion of teeth discrepancy
524.56	Non-working side interference
Balancing side interference
524.57	Lack of posterior occlusal support
524.59	Other dentofacial functional abnormalities
Abnormal swallowing
Mouth breathing
Sleep postures
Tongue, lip, or finger habits
524.6	Temporomandibular joint disorders
Excludes:	current temporomandibular joint:
dislocation (830.0-830.1)
strain (848.1)
524.60	Temporomandibular joint disorders, unspecified
Temporomandibular joint-pain-dysfunction syndrome [TMJ]
524.61	Adhesions and ankylosis (bony or fibrous)
524.62	Arthralgia of temporomandibular joint
524.63	Articular disc disorder (reducing or nonreducing)
524.64	Temporomandibular joint sounds on opening and/or closing the jaw
524.69	Other specified temporomandibular joint disorders
524.7	Dental alveolar anomalies
524.70	Unspecified alveolar anomaly
524.71	Alveolar maxillary hyperplasia
524.72	Alveolar mandibular hyperplasia
524.73	Alveolar maxillary hypoplasia
524.74	Alveolar mandibular hypoplasia
524.75	Vertical displacement of alveolus and teeth
Extrusion of alveolus and teeth
524.76	Occlusal plane deviation
524.79	Other specified alveolar anomaly
524.8	Other specified dentofacial anomalies
524.81	Anterior soft tissue impingement
524.82	Posterior soft tissue impingement
524.89	Other specified dentofacial anomalies
524.9	Unspecified dentofacial anomalies
525	Other diseases and conditions of the teeth and supporting structures
525.0	Exfoliation of teeth due to systemic causes
525.1	Loss of teeth due to trauma, extraction, or periodontal disease
Code first class of edentulism (525.40-525.44, 525.50-525.54)
525.10	Acquired absence of teeth, unspecified
Tooth extraction status, NOS
525.11	Loss of teeth due to trauma
525.12	Loss of teeth due to periodontal disease
525.13	Loss of teeth due to caries
525.19	Other loss of teeth
525.2	Atrophy of edentulous alveolar ridge
525.20	Unspecified atrophy of edentulous alveolar ridge
Atrophy of the mandible NOS
Atrophy of the maxilla NOS
525.21	Minimal atrophy of the mandible
525.22	Moderate atrophy of the mandible
525.23	Severe atrophy of the mandible
525.24	Minimal atrophy of the maxilla
525.25	Moderate atrophy of the maxilla
525.26	Severe atrophy of the maxilla
525.3	Retained dental root
525.4	Complete edentulism
Use additional code to identify cause of edentulism (525.10-525.19)
525.40	Complete edentulism, unspecified
Edentulism NOS
525.41	Complete edentulism, class I
525.42	Complete edentulism, class II
525.43	Complete edentulism, class III
525.44	Complete edentulism, class IV
525.5	Partial edentulism
Use additional code to identify cause of edentulism (525.10-525.19)
525.50	Partial edentulism, unspecified
525.51	Partial edentulism, class I
525.52	Partial edentulism, class II
525.53	Partial edentulism, class III
525.54	Partial edentulism, class IV
525.6	Unsatisfactory restoration of tooth
Defective bridge, crown, fillings
Defective dental restoration
Excludes:	dental restoration status (V45.84)
unsatisfactory endodontic treatment (526.61-526.69)
525.60	Unspecified unsatisfactory restoration of tooth
Unspecified defective dental restoration
525.61	Open restoration margins
Dental restoration failure of marginal integrity
Open margin on tooth restoration
525.62	Unrepairable overhanging of dental restorative materials
Overhanging of tooth restoration
525.63	Fractured dental restorative material without loss of material
Excludes:	cracked tooth (521.81)
fractured tooth (873.63, 873.73)
525.64	Fractured dental restorative material with loss of material
Excludes:	cracked tooth (521.81)
fractured tooth (873.63, 873.73)
525.65	Contour of existing restoration of tooth biologically incompatible with oral health
Dental restoration failure of periodontal anatomical integrity
Unacceptable contours of existing restoration
Unacceptable morphology of existing restoration
525.66	Allergy to existing dental restorative material
Use additional code to identify the specific type of allergy
525.67	Poor aesthetics of existing restoration
Dental restoration aesthetically inadequate or displeasing
525.69	Other unsatisfactory restoration of existing tooth
525.7	Endosseous dental implant failure
525.71	Osseointegration failure of dental implant
Hemorrhagic complications of dental implant placement
Iatrogenic osseointegration failure of dental implant
Osseointegration failure of dental implant due to complications of systemic disease
Osseointegration failure of dental implant due to poor bone quality
Pre-integration failure of dental implant NOS
Pre-osseointegration failure of dental implant
525.72	Post-osseointegration biological failure of dental implant
Failure of dental implant due to lack of attached gingiva
Failure of dental implant due to occlusal trauma (caused by poor prosthetic design)
Failure of dental implant due to parafunctional habits
Failure of dental implant due to periodontal infection (peri-implantitis)
Failure of dental implant due to poor oral hygiene
Iatrogenic post-osseointegration failure of dental implant
Post-osseointegration failure of dental implant due to complications of systemic disease
525.73	Post-osseointegration mechanical failure of dental implant
Failure of dental prosthesis causing loss of dental implant
Fracture of dental implant
Excludes:	cracked tooth (521.81)
fractured dental restorative material with loss of material (525.64)
fractured dental restorative material without loss of material (525.63)
fractured tooth (873.63, 873.73)
525.79	Other endosseous dental implant failure
Dental implant failure NOS
525.8	Other specified disorders of the teeth and supporting structures
Enlargement of alveolar ridge NOS
Irregular alveolar process
525.9	Unspecified disorder of the teeth and supporting structures
526	Diseases of the jaws
526.0	Developmental odontogenic cysts
Cyst:
dentigerous
eruption
follicular
lateral developmental
lateral periodontal
primordial
Keratocyst
Excludes:	radicular cyst (522.8)
526.1	Fissural cysts of jaw
Cyst:
globulomaxillary
incisor canal
median anterior maxillary
median palatal
nasopalatine
palatine of papilla
Excludes:	cysts of oral soft tissues (528.4)
526.2	Other cysts of jaws
Cyst of jaw:
NOS
aneurysmal
hemorrhagic
traumatic
526.3	Central giant cell (reparative) granuloma
Excludes:	peripheral giant cell granuloma (523.8)
526.4	Inflammatory conditions
Abscess of jaw (acute) (chronic) (suppurative)
Osteitis of jaw (acute) (chronic) (suppurative)
Osteomyelitis (neonatal) of jaw (acute) (chronic) (suppurative)
Periostitis of jaw (acute) (chronic) (suppurative)
Sequestrum of jaw bone
Excludes:	alveolar osteitis (526.5)
osteonecrosis of jaw (733.45)
526.5	Alveolitis of jaw
Alveolar osteitis
Dry socket
526.6	Periradicular pathology associated with previous endodontic treatment
526.61	Perforation of root canal space
526.62	Endodontic overfill
526.63	Endodontic underfill
526.69	Other periradicular pathology associated with previous endodontic treatment
526.8	Other specified diseases of the jaws
526.81	Exostosis of jaw
Torus mandibularis
Torus palatinus
526.89	Other
Cherubism
Fibrous dysplasia of jaw(s)
Latent bone cyst of jaw(s)
Osteoradionecrosis of jaw(s)
Unilateral condylar hyperplasia or hypoplasia of mandible
526.9	Unspecified disease of the jaws
527	Diseases of the salivary glands
527.0	Atrophy
527.1	Hypertrophy
527.2	Sialoadenitis
Parotitis:
NOS
allergic
toxic
Sialoangitis
Sialodochitis
Excludes:	epidemic or infectious parotitis (072.0-072.9)
uveoparotid fever (135)
527.3	Abscess
527.4	Fistula
Excludes:	congenital fistula of salivary gland (750.24)
527.5	Sialolithiasis
Calculus of salivary gland or duct
Stone of salivary gland or duct
Sialodocholithiasis
527.6	Mucocele
Mucous:
extravasation cyst of salivary gland
retention cyst of salivary gland
Ranula
527.7	Disturbance of salivary secretion
Hyposecretion
Ptyalism
Sialorrhea
Xerostomia
527.8	Other specified diseases of the salivary glands
Benign lymphoepithelial lesion of salivary gland
Sialectasia
Sialosis
Stenosis of salivary duct
Stricture of salivary duct
527.9	Unspecified disease of the salivary glands
528	Diseases of the oral soft tissues, excluding lesions specific for gingiva and
 tongue
528.0	Stomatitis and mucositis (ulcerative)
Excludes:	stomatitis:
acute necrotizing ulcerative (101)
aphthous (528.2)
cellulitis and abscess of mouth (528.3)
diphtheritic stomatitis (032.0)
epizootic stomatitis (078.4)
gangrenous (528.1)
gingivitis (523.0-523.1)
herpetic (054.2)
oral thrush (112.0)
Stevens-Johnson syndrome (695.1)
Vincent's (101)
528.00	Stomatitis and mucositis, unspecified
Mucositis NOS
Ulcerative mucositis NOS
Ulcerative stomatitis NOS
Vesicular stomatitis NOS
528.01	Mucositis (ulcerative) due to antineoplastic therapy
Use additional E code to identify adverse effects of therapy, such as:
antineoplastic and immunosuppressive drugs (E930.7, E933.1)
radiation therapy (E879.2)
528.02	Mucositis (ulcerative) due to other drugs
Use additional E code to identify drug
528.09	Other stomatitis and mucositis (ulcerative)
528.1	Cancrum oris
Gangrenous stomatitis
Noma
528.2	Oral aphthae
Aphthous stomatitis
Canker sore
Periadenitis mucosa necrotica recurrens
Recurrent aphthous ulcer
Stomatitis herpetiformis
Excludes:	herpetic stomatitis (054.2)
528.3	Cellulitis and abscess
Cellulitis of mouth (floor)
Ludwig's angina
Oral fistula
Excludes:	abscess of tongue (529.0)
cellulitis or abscess of lip (528.5)
fistula (of):
dental (522.7)
lip (528.5)
gingivitis (523.00-523.11)
528.4	Cysts
Dermoid cyst of mouth
Epidermoid cyst of mouth
Epstein's pearl of mouth
Lymphoepithelial cyst of mouth
Nasoalveolar cyst of mouth
Nasolabial cyst of mouth
Excludes:	cyst:
gingiva (523.8)
tongue (529.8)
528.5	Diseases of lips
Abscess of lip(s)
Cellulitis of lip(s)
Fistula of lip(s)
Hypertrophy of lip(s)
Cheilitis:
NOS
angular
Cheilodynia
Cheilosis
Excludes:	actinic cheilitis (692.79)
congenital fistula of lip (750.25)
leukoplakia of lips (528.6)
528.6	Leukoplakia of oral mucosa, including tongue
Leukokeratosis of oral mucosa
Leukoplakia of:
gingiva
lips
tongue
Excludes:	carcinoma in situ (230.0, 232.0)
leukokeratosis nicotina palati (528.79)
528.7	Other disturbances of oral epithelium, including tongue
Excludes:	carcinoma in situ (230.0, 232.0)
leukokeratosis NOS (702.8)
528.71	Minimal keratinized residual ridge mucosa
Minimal keratinization of alveolar ridge mucosa
528.72	Excessive keratinized residual ridge mucosa
Excessive keratinization of alveolar ridge mucosa
528.79	Other disturbances of oral epithelium, including tongue
Erythroplakia of mouth or tongue
Focal epithelial hyperplasia of mouth or tongue
Leukoedema of mouth or tongue
Leukokeratosis nicotina palati
Other oral epithelium disturbances
528.8	Oral submucosal fibrosis, including of tongue
528.9	Other and unspecified diseases of the oral soft tissues
Cheek and lip biting
Denture sore mouth
Denture stomatitis
Melanoplakia
Papillary hyperplasia of palate
Eosinophilic granuloma of oral mucosa
Irritative hyperplasia of oral mucosa
Pyogenic granuloma of oral mucosa
Ulcer (traumatic) of oral mucosa
529	Diseases and other conditions of the tongue
529.0	Glossitis
Abscess of tongue
Ulceration (traumatic) of tongue
Excludes:	glossitis:
benign migratory (529.1)
Hunter's (529.4)
median rhomboid (529.2)
Moeller's (529.4)
529.1	Geographic tongue
Benign migratory glossitis
Glossitis areata exfoliativa
529.2	Median rhomboid glossitis
529.3	Hypertrophy of tongue papillae
Black hairy tongue
Coated tongue
Hypertrophy of foliate papillae
Lingua villosa nigra
529.4	Atrophy of tongue papillae
Bald tongue
Glazed tongue
Glossitis:
Hunter's
Moeller's
Glossodynia exfoliativa
Smooth atrophic tongue
529.5	Plicated tongue
Fissured tongue
Furrowed tongue
Scrotal tongue
Excludes:	fissure of tongue, congenital (750.13)
529.6	Glossodynia
Glossopyrosis
Painful tongue
Excludes:	glossodynia exfoliativa (529.4)
529.8	Other specified conditions of the tongue
Atrophy (of) tongue
Crenated (of) tongue
Enlargement (of) tongue
Hypertrophy (of) tongue
Glossocele
Glossoptosis
Excludes:	erythroplasia of tongue (528.79)
leukoplakia of tongue (528.6)
macroglossia (congenital) (750.15)
microglossia (congenital) (750.16)
oral submucosal fibrosis (528.8)
529.9	Unspecified condition of the tongue

DISEASES OF ESOPHAGUS, STOMACH, AND DUODENUM (530-538)

530	Diseases of esophagus
Excludes:	esophageal varices (456.0-456.2)
530.0	Achalasia and cardiospasm
Achalasia (of cardia)
Aperistalsis of esophagus
Megaesophagus
Excludes:	congenital cardiospasm (750.7)
530.1	Esophagitis
Abscess of esophagus
Esophagitis:
NOS
chemical
peptic
postoperative
regurgitant
Use additional E code to identify cause, if induced by chemical
Excludes:	tuberculous esophagitis (017.8)
530.10	Esophagitis, unspecified
530.11	Reflux esophagitis
530.12	Acute esophagitis
530.19	Other esophagitis
530.2	Ulcer of esophagus
Ulcer of esophagus
fungal
peptic
Ulcer of esophagus due to ingestion of:
aspirin
chemicals
medicines
Use additional E code to identify cause, if induced by chemical or drug
530.20	Ulcer of esophagus without bleeding
Ulcer of esophagus NOS
530.21	Ulcer of esophagus with bleeding
Excludes:	bleeding esophageal varices (456.0, 456.20)
530.3	Stricture and stenosis of esophagus
Compression of esophagus
Obstruction of esophagus
Excludes:	congenital stricture of esophagus (750.3)
530.4	Perforation of esophagus
Rupture of esophagus
Excludes:	traumatic perforation of esophagus (862.22, 862.32, 874.4-874.5)
530.5	Dyskinesia of esophagus
Corkscrew esophagus
Curling esophagus
Esophagospasm
Spasm of esophagus
Excludes:	cardiospasm (530.0)
530.6	Diverticulum of esophagus, acquired
Diverticulum, acquired:
epiphrenic
pharyngoesophageal
pulsion
subdiaphragmatic
traction
Zenker's (hypopharyngeal)
Esophageal pouch, acquired
Esophagocele, acquired
Excludes:	congenital diverticulum of esophagus (750.4)
530.7	Gastroesophageal laceration-hemorrhage syndrome
Mallory-Weiss syndrome
530.8	Other specified disorders of esophagus
530.81	Esophageal reflux
Gastroesophageal reflux
Excludes:	reflux esophagitis (530.11)
530.82	Esophageal hemorrhage
Excludes:	hemorrhage due to esophageal varices (456.0-456.2)
530.83	Esophageal leukoplakia
530.84	Tracheoesophageal fistula
Excludes:	congenital tracheoesophageal fistula (750.3)
530.85	Barrett's esophagus
530.86	Infection of esophagostomy
Use additional code to specify infection
530.87	Mechanical complication of esophagostomy
Malfunction of esophagostomy
530.89	Other
Excludes:	Paterson-Kelly syndrome (280.8)
530.9	Unspecified disorder of esophagus
531	Gastric ulcer
Includes:	ulcer (peptic):
prepyloric
pylorus
stomach
Use additional E code to identify drug, if drug-induced
Excludes:	peptic ulcer NOS (533.0-533.9)
The following fifth-digit subclassification is for use with category 531:
0	without mention of obstruction
1	with obstruction
531.0	Acute with hemorrhage
531.1	Acute with perforation
531.2	Acute with hemorrhage and perforation
531.3	Acute without mention of hemorrhage or perforation
531.4	Chronic or unspecified with hemorrhage
531.5	Chronic or unspecified with perforation
531.6	Chronic or unspecified with hemorrhage and perforation
531.7	Chronic without mention of hemorrhage or perforation
531.9	Unspecified as acute or chronic, without mention of hemorrhage or perforation
532	Duodenal ulcer
Includes:	erosion (acute) of duodenum
ulcer (peptic):
duodenum
postpyloric
Use additional E code to identify drug, if drug-induced
Excludes:	peptic ulcer NOS (533.0-533.9)
The following fifth-digit subclassification is for use with category 532:
0	without mention of obstruction
1	with obstruction
532.0	Acute with hemorrhage
532.1	Acute with perforation
532.2	Acute with hemorrhage and perforation
532.3	Acute without mention of hemorrhage or perforation
532.4	Chronic or unspecified with hemorrhage
532.5	Chronic or unspecified with perforation
532.6	Chronic or unspecified with hemorrhage and perforation
532.7	Chronic without mention of hemorrhage or perforation
532.9	Unspecified as acute or chronic, without mention of hemorrhage or perforation
533	Peptic ulcer, site unspecified
Includes:	gastroduodenal ulcer NOS
peptic ulcer NOS
stress ulcer NOS
Use additional E code to identify drug, if drug-induced
Excludes:	peptic ulcer:
duodenal (532.0-532.9)
gastric (531.0-531.9)
The following fifth-digit subclassification is for use with category 533:
0	without mention of obstruction
1	with obstruction
533.0	Acute with hemorrhage
533.1	Acute with perforation
533.2	Acute with hemorrhage and perforation
533.3	Acute without mention of hemorrhage and perforation
533.4	Chronic or unspecified with hemorrhage
533.5	Chronic or unspecified with perforation
533.6	Chronic or unspecified with hemorrhage and perforation
533.7	Chronic without mention of hemorrhage or perforation
533.9	Unspecified as acute or chronic, without mention of hemorrhage or perforation
534	Gastrojejunal ulcer
Includes:	ulcer (peptic) or erosion:
anastomotic
gastrocolic
gastrointestinal
gastrojejunal
jejunal
marginal
stomal
Excludes:	primary ulcer of small intestine (569.82)
The following fifth-digit subclassification is for use with category 534:
0	without mention of obstruction
1	with obstruction
534.0	Acute with hemorrhage
534.1	Acute with perforation
534.2	Acute with hemorrhage and perforation
534.3	Acute without mention of hemorrhage or perforation
534.4	Chronic or unspecified with hemorrhage
534.5	Chronic or unspecified with perforation
534.6	Chronic or unspecified with hemorrhage and perforation
534.7	Chronic without mention of hemorrhage or perforation
534.9	Unspecified as acute or chronic, without mention of hemorrhage or perforation
535	Gastritis and duodenitis
The following fifth-digit subclassification is for use with category 535:
0	without mention of hemorrhage
1	with hemorrhage
535.0	Acute gastritis
535.1	Atrophic gastritis
Gastritis:
atrophic-hyperplastic
chronic (atrophic)
535.2	Gastric mucosal hypertrophy
Hypertrophic gastritis
535.3	Alcoholic gastritis
535.4	Other specified gastritis
Gastritis:
allergic
bile induced
irritant
superficial
toxic
535.5	Unspecified gastritis and gastroduodenitis
535.6	Duodenitis
536	Disorders of function of stomach
Excludes:	functional disorders of stomach specified as psychogenic (306.4)
536.0	Achlorhydria
536.1	Acute dilatation of stomach
Acute distention of stomach
536.2	Persistent vomiting
Habit vomiting
Persistent vomiting [not of pregnancy]
Uncontrollable vomiting
Excludes:	excessive vomiting in pregnancy (643.0-643.9)
vomiting NOS (787.0)
536.3	Gastroparesis
Gastroparalysis
Code first underlying disease, such as:
diabetes mellitus (250.6)
536.4	Gastrostomy complications
536.40	Gastrostomy complication, unspecified
536.41	Infection of gastrostomy
Use additional code to identify type of infection, such as:
abscess or cellulitis of abdomen (682.2)
septicemia (038.0-038.9)
Use additional code to identify organism (041.00-041.9)
536.42	Mechanical complication of gastrostomy
536.49	Other gastrostomy complications
536.8	Dyspepsia and other specified disorders of function of stomach
Achylia gastrica
Hourglass contraction of stomach
Hyperacidity
Hyperchlorhydria
Hypochlorhydria
Indigestion
Tachygastria
Excludes:	achlorhydria (536.0)
heartburn (787.1)
536.9	Unspecified functional disorder of stomach
Functional gastrointestinal:
disorder
disturbance
irritation
537	Other disorders of stomach and duodenum
537.0	Acquired hypertrophic pyloric stenosis
Constriction of pylorus, acquired or adult
Obstruction of pylorus, acquired or adult
Stricture of pylorus, acquired or adult
Excludes:	congenital or infantile pyloric stenosis (750.5)
537.1	Gastric diverticulum
Excludes:	congenital diverticulum of stomach (750.7)
537.2	Chronic duodenal ileus
537.3	Other obstruction of duodenum
Cicatrix of duodenum
Stenosis of duodenum
Stricture of duodenum
Volvulus of duodenum
Excludes:	congenital obstruction of duodenum (751.1)
537.4	Fistula of stomach or duodenum
Gastrocolic fistula
Gastrojejunocolic fistula
537.5	Gastroptosis
537.6	Hourglass stricture or stenosis of stomach
Cascade stomach
Excludes:	congenital hourglass stomach (750.7)
hourglass contraction of stomach (536.8)
537.8	Other specified disorders of stomach and duodenum
537.81	Pylorospasm
Excludes:	congenital pylorospasm (750.5)
537.82	Angiodysplasia of stomach and duodenum without mention of hemorrhage
537.83	Angiodysplasia of stomach and duodenum with hemorrhage
537.84	Dieulafoy lesion (hemorrhagic) of stomach and duodenum
537.89	Other
Gastric or duodenal:
prolapse
rupture
Intestinal metaplasia of gastric mucosa
Passive congestion of stomach
Excludes:	diverticula of duodenum (562.00-562.01)
gastrointestinal hemorrhage (578.0-578.9)
537.9	Unspecified disorder of stomach and duodenum
538 	Gastrointestinal mucositis (ulcerative)
Use additional E code to identify adverse effects of therapy, such as:
antineoplastic and immunosuppressive drugs (E930.7, E933.1)
radiation therapy (E879.2)
Excludes:	mucositis (ulcerative) of mouth and oral soft tissue (528.00-528.09)

APPENDICITIS (540-543)

540	Acute appendicitis
540.0	With generalized peritonitis
Appendicitis (acute) with:  perforation, peritonitis (generalized), rupture:
fulminating
gangrenous
obstructive
Cecitis (acute) with:  perforation, peritonitis (generalized), rupture
Rupture of appendix
Excludes:	acute appendicitis with peritoneal abscess (540.1)
540.1	With peritoneal abscess
Abscess of appendix
With generalized peritonitis
540.9	Without mention of peritonitis
Acute:
appendicitis without mention of perforation, peritonitis, or rupture:
fulminating
gangrenous
inflamed
obstructive
cecitis without mention of perforation, peritonitis, or rupture
541	Appendicitis, unqualified
542	Other appendicitis
Appendicitis:
chronic
recurrent
relapsing
subacute
Excludes:	hyperplasia (lymphoid) of appendix (543.0)
543	Other diseases of appendix
543.0	Hyperplasia of appendix (lymphoid)
543.9	Other and unspecified diseases of appendix
Appendicular or appendiceal:
colic
concretion
fistula
Diverticulum of appendix
Fecalith of appendix
Intussusception of appendix
Mucocele of appendix
Stercolith of appendix

HERNIA OF ABDOMINAL CAVITY (550-553)

Includes:	hernia:
	acquired
	congenital, except diaphragmatic or hiatal
550	Inguinal hernia
Includes:	bubonocele
inguinal hernia (direct) (double) (indirect) (oblique) (sliding)
scrotal hernia
The following fifth-digit subclassification is for use with category 550:
0	unilateral or unspecified (not specified as recurrent)
	Unilateral NOS
1	unilateral or unspecified, recurrent
2	bilateral (not specified as recurrent)
	Bilateral NOS
3	bilateral, recurrent
550.0	Inguinal hernia, with gangrene
Inguinal hernia with gangrene (and obstruction)
550.1	Inguinal hernia, with obstruction, without mention of gangrene
Inguinal hernia with mention of incarceration, irreducibility, or strangulation
550.9	Inguinal hernia, without mention of obstruction or gangrene
Inguinal hernia NOS
551	Other hernia of abdominal cavity, with gangrene
Includes:	that with gangrene (and obstruction)
551.0	Femoral hernia with gangrene
551.00	Unilateral or unspecified (not specified as recurrent)
Femoral hernia NOS with gangrene
551.01	Unilateral or unspecified, recurrent
551.02	Bilateral (not specified as recurrent)
551.03	Bilateral, recurrent
551.1	Umbilical hernia with gangrene
Parumbilical hernia specified as gangrenous
551.2	Ventral hernia with gangrene
551.20	Ventral, unspecified, with gangrene
551.21	Incisional, with gangrene
Hernia:
postoperative specified as gangrenous
recurrent, ventral specified as gangrenous
551.29	Other
Epigastric hernia specified as gangrenous
551.3	Diaphragmatic hernia with gangrene
Hernia:
hiatal (esophageal) (sliding) specified as gangrenous
paraesophageal specified as gangrenous
Thoracic stomach specified as gangrenous
Excludes:	congenital diaphragmatic hernia (756.6)
551.8	Hernia of other specified sites, with gangrene
Any condition classifiable to 553.8 if specified as gangrenous
551.9	Hernia of unspecified site, with gangrene
Any condition classifiable to 553.9 if specified as gangrenous
552	Other hernia of abdominal cavity, with obstruction, but without mention of
 gangrene
Excludes:	that with mention of gangrene (551.0-551.9)
552.0	Femoral hernia with obstruction
Femoral hernia specified as incarcerated, irreducible, strangulated, or causing
 obstruction
552.00	Unilateral or unspecified (not specified as recurrent)
552.01	Unilateral or unspecified, recurrent
552.02	Bilateral (not specified as recurrent)
552.03	Bilateral, recurrent
552.1	Umbilical hernia with obstruction
Parumbilical hernia specified as incarcerated, irreducible, strangulated, or causing
 obstruction
552.2	Ventral hernia with obstruction
Ventral hernia specified as incarcerated, irreducible, strangulated, or causing
 obstruction
552.20	Ventral, unspecified, with obstruction
552.21	Incisional, with obstruction
Hernia:
postoperative specified as incarcerated, irreducible, strangulated, or causing
 obstruction
recurrent, ventral specified as incarcerated, irreducible, strangulated, or causing
 obstruction
552.29	Other
Epigastric hernia specified as incarcerated, irreducible, strangulated, or causing
 obstruction
552.3	Diaphragmatic hernia with obstruction
Hernia:
hiatal (esophageal) (sliding) specified as incarcerated, irreducible, strangulated,
 or causing obstruction
paraesophageal specified as incarcerated, irreducible, strangulated, or causing
obstruction
Thoracic stomach specified as incarcerated, irreducible, strangulated, or causing
 obstruction
Excludes:	congenital diaphragmatic hernia (756.6)
552.8	Hernia of other specified sites, with obstruction
Any condition classifiable to 553.8 if specified as incarcerated, irreducible,
 strangulated, or causing obstruction
Excludes:	hernia due to adhesion with obstruction (560.81)
552.9	Hernia of unspecified site, with obstruction
Any condition classifiable to 553.9 if specified as incarcerated, irreducible,
 strangulated, or causing obstruction
553	Other hernia of abdominal cavity without mention of obstruction or gangrene
Excludes:	the listed conditions with mention of:
gangrene (and obstruction) (551.0-551.9)
obstruction (552.0-552.9)
553.0	Femoral hernia
553.00	Unilateral or unspecified (not specified as recurrent)
Femoral hernia NOS
553.01	Unilateral or unspecified, recurrent
553.02	Bilateral (not specified as recurrent)
553.03	Bilateral, recurrent
553.1	Umbilical hernia
Parumbilical hernia
553.2	Ventral hernia
553.20	Ventral, unspecified
553.21	Incisional
Hernia:
postoperative
recurrent, ventral
553.29	Other
Hernia:
epigastric
spigelian
553.3	Diaphragmatic hernia
Hernia:
hiatal (esophageal) (sliding)
paraesophageal
Thoracic stomach
Excludes:	congenital:
diaphragmatic hernia (756.6)
hiatal hernia (750.6)
esophagocele (530.6)
553.8	Hernia of other specified sites
Hernia:
ischiatic
ischiorectal
lumbar
obturator
pudendal
retroperitoneal
sciatic
Other abdominal hernia of specified site
Excludes:	vaginal enterocele (618.6)
553.9	Hernia of unspecified site
Enterocele
Epiplocele
Hernia:
NOS
interstitial
intestinal
intra-abdominal
Rupture (nontraumatic)
Sarcoepiplocele

NONINFECTIOUS ENTERITIS AND COLITIS (555-558)

555	Regional enteritis
Includes:	Crohn's disease
Granulomatous enteritis
Excludes:	ulcerative colitis (556)
555.0	Small intestine
Ileitis:
regional
segmental
terminal
Regional enteritis or Crohn's disease of:
duodenum
ileum
jejunum
555.1	Large intestine
Colitis:
granulomatous
regional
transmural
Regional enteritis or Crohn's disease of:
colon
large bowel
rectum
555.2	Small intestine with large intestine
Regional ileocolitis
555.9	Unspecified site
Crohn's disease NOS
Regional enteritis NOS
556	Ulcerative colitis
556.0	Ulcerative (chronic) enterocolitis
556.1	Ulcerative (chronic) ileocolitis
556.2	Ulcerative (chronic) proctitis
556.3	Ulcerative (chronic) proctosigmoiditis
556.4	Pseudopolyposis of colon
556.5	Left-sided ulcerative (chronic) colitis
556.6	Universal ulcerative (chronic) colitis
Pancolitis
556.8	Other ulcerative colitis
556.9	Ulcerative colitis, unspecified
Ulcerative enteritis NOS
557	Vascular insufficiency of intestine
Excludes:	necrotizing enterocolitis of the newborn (777.5)
557.0	Acute vascular insufficiency of intestine
Acute:
hemorrhagic enterocolitis
ischemic colitis, enteritis, or enterocolitis
massive necrosis of intestine
Bowel infarction
Embolism of mesenteric artery
Fulminant enterocolitis
Hemorrhagic necrosis of intestine
Infarction of appendices epiploicae
Intestinal gangrene
Intestinal infarction (acute) (agnogenic) (hemorrhagic) (nonocclusive)
Mesenteric infarction (embolic) (thrombotic)
Necrosis of intestine
Terminal hemorrhagic enteropathy
Thrombosis of mesenteric artery
557.1	Chronic vascular insufficiency of intestine
Angina, abdominal
Chronic ischemic colitis, enteritis, or enterocolitis
Ischemic stricture of intestine
Mesenteric:
angina
artery syndrome (superior)
vascular insufficiency
557.9	Unspecified vascular insufficiency of intestine
Alimentary pain due to vascular insufficiency
Ischemic colitis, enteritis, or enterocolitis NOS
558	Other and unspecified noninfectious gastroenteritis and colitis
Excludes:	infectious:
colitis, enteritis, or gastroenteritis (009.0-009.1)
diarrhea (009.2-009.3)
558.1	Gastroenteritis and colitis due to radiation
Radiation enterocolitis
558.2	Toxic gastroenteritis and colitis
Use additional E code to identify cause
558.3	Allergic gastroenteritis and colitis
Use additional code to identify type of food allergy (V15.01-V15.05)
558.9	Other and unspecified noninfectious gastroenteritis and colitis
Colitis, NOS, dietetic, or noninfectious
Enteritis, NOS, dietetic, or noninfectious
Gastroenteritis, NOS, dietetic, or noninfectious
Ileitis, NOS, dietetic or noninfectious
Jejunitis, NOS, dietetic, or noninfectious
Sigmoiditis, NOS, dietetic, or noninfectious

OTHER DISEASES OF INTESTINES AND PERITONEUM (560-569)

560	Intestinal obstruction without mention of hernia
Excludes:	duodenum (537.2-537.3)
inguinal hernia with obstruction (550.1)
intestinal obstruction complicating hernia (552.0-552.9)
mesenteric:
embolism (557.0)
infarction (557.0)
thrombosis (557.0)
neonatal intestinal obstruction (277.01, 777.1-777.2, 777.4)
560.0	Intussusception
Intussusception (colon) (intestine) (rectum)
Invagination of intestine or colon
Excludes:	intussusception of appendix (543.9)
560.1	Paralytic ileus
Adynamic ileus
Ileus (of intestine) (of bowel) (of colon)
Paralysis of intestine or colon
Excludes:	gallstone ileus (560.31)
560.2	Volvulus
Knotting of intestine, bowel, or colon
Strangulation of intestine, bowel, or colon
Torsion of intestine, bowel, or colon
Twist of intestine, bowel, or colon
560.3	Impaction of intestine
560.30	Impaction of intestine, unspecified
Impaction of colon
560.31	Gallstone ileus
Obstruction of intestine by gallstone
560.39	Other
Concretion of intestine
Enterolith
Fecal impaction
560.8	Other specified intestinal obstruction
560.81	Intestinal or peritoneal adhesions with obstruction (postoperative) (postinfection)
Excludes:	adhesions without obstruction (568.0)
560.89	Other
Acute pseudo-obstruction of intestine
Mural thickening causing obstruction
Excludes:	ischemic stricture of intestine (557.1)
560.9	Unspecified intestinal obstruction
Enterostenosis
Obstruction of intestine or colon
Occlusion of intestine or colon
Stenosis of intestine or colon
Stricture of intestine or colon
Excludes:	congenital stricture or stenosis of intestine (751.1-751.2)
562	Diverticula of intestine
Use additional code to identify any associated:
peritonitis (567.0-567.9)
Excludes:	congenital diverticulum of colon (751.5)
diverticulum of appendix (543.9)
Meckel's diverticulum (751.0)
562.0	Small intestine
562.00	Diverticulosis of small intestine (without mention of hemorrhage)
Diverticulosis:
duodenum without mention of diverticulitis
ileum without mention of diverticulitis
jejunum without mention of diverticulitis
562.01	Diverticulitis of small intestine (without mention of hemorrhage)
Diverticulitis (with diverticulosis):
duodenum
ileum
jejunum
small intestine
562.02	Diverticulosis of small intestine with hemorrhage
562.03	Diverticulitis of small intestine with hemorrhage
562.1	Colon
562.10	Diverticulosis of colon (without mention of hemorrhage)
Diverticulosis without mention of diverticulitis:
NOS
intestine (large) without mention of diverticulitis
Diverticular disease (colon) without mention of diverticulitis
562.11	Diverticulitis of colon without mention of hemorrhage
Diverticulitis (with diverticulosis):
NOS
colon
intestine (large)
562.12	Diverticulosis of colon with hemorrhage
562.13	Diverticulitis of colon with hemorrhage
564	Functional digestive disorders, not elsewhere classified
Excludes:	functional disorders of stomach (536.0-536.9)
those specified as psychogenic (306.4)
564.0	Constipation
Excludes:	psychogenic constipation (306.4)
564.00	Constipation, unspecified
564.01	Slow transit constipation
564.02	Outlet dysfunction constipation
564.09	Other constipation
564.1	Irritable bowel syndrome
Irritable colon
Spastic colon
564.2	Postgastric surgery syndromes
Dumping syndrome
Jejunal syndrome
Postgastrectomy syndrome
Postvagotomy syndrome
Excludes:	malnutrition following gastrointestinal surgery (579.3)
postgastrojejunostomy ulcer (534.0-534.9)
564.3	Vomiting following gastrointestinal surgery
Vomiting (bilious) following gastrointestinal surgery
564.4	Other postoperative functional disorders
Diarrhea following gastrointestinal surgery
Excludes:	colostomy and enterostomy complications (569.60-569.69)
564.5	Functional diarrhea
Excludes:	diarrhea:
NOS (787.91)
psychogenic (306.4)
564.6	Anal spasm
Proctalgia fugax
564.7	Megacolon, other than Hirschsprung's
Dilatation of colon
Excludes:	megacolon:
congenital [Hirschsprung's] (751.3)
toxic (556)
564.8	Other specified functional disorders of intestine
Excludes:	malabsorption (579.0-579.9)
564.81	Neurogenic bowel
564.89	Other functional disorders of intestine
Atony of colon
564.9	Unspecified functional disorder of intestine
565	Anal fissure and fistula
565.0	Anal fissure
Excludes:	anal sphincter tear (healed) (non-traumatic) (old) (569.43)
traumatic (863.89, 863.99)
565.1	Anal fistula
Fistula:
anorectal
rectal
rectum to skin
Excludes:	fistula of rectum to internal organs­see Alphabetic Index
ischiorectal fistula (566)
rectovaginal fistula (619.1)
566	Abscess of anal and rectal regions
Abscess:
ischiorectal
perianal
perirectal
Cellulitis:
anal
perirectal
rectal
Ischiorectal fistula
567	Peritonitis and retroperitoneal infections
Excludes:	peritonitis:
benign paroxysmal (277.31)
pelvic, female (614.5, 614.7)
periodic familial (277.31)
puerperal (670)
with or following:
abortion (634-638 with .0, 639.0)
appendicitis (540.0-540.1)
ectopic or molar pregnancy (639.0)
567.0	Peritonitis in infectious diseases classified elsewhere
Code first underlying disease
Excludes:	peritonitis:
gonococcal (098.86)
syphilitic (095.2)
tuberculous (014.0)
567.1	Pneumococcal peritonitis
567.2	Other suppurative peritonitis
567.21	Peritonitis (acute) generalized
Pelvic peritonitis, male
567.22	Peritoneal abscess
Abscess (of):
abdominopelvic
mesenteric
omentum
peritoneum
retrocecal
subdiaphragmatic
subhepatic
subphrenic
567.23	Spontaneous bacterial peritonitis
Excludes:	bacterial peritonitis NOS (567.29)
567.29	Other suppurative peritonitis
Subphrenic peritonitis
567.3	Retroperitoneal infections
567.31	Psoas muscle abscess
567.38	Other retroperitoneal abscess
567.39	Other retroperitoneal infections
567.8	Other specified peritonitis
567.81	Choleperitonitis
Peritonitis due to bile
567.82	Sclerosing mesenteritis
Fat necrosis of peritoneum
(Idiopathic) sclerosing mesenteric fibrosis
Mesenteric lipodystrophy
Mesenteric panniculitis
Retractile mesenteritis
567.89	Other specified peritonitis
Chronic proliferative peritonitis
Mesenteric saponification
Peritonitis due to urine
567.9	Unspecified peritonitis
Peritonitis:
NOS
of unspecified cause
568	Other disorders of peritoneum
568.0	Peritoneal adhesions (postoperative) (postinfection)
Adhesions (of):
abdominal (wall)
diaphragm
intestine
male pelvis
mesenteric
omentum
stomach
Adhesive bands
Excludes:	adhesions:
pelvic, female (614.6)
with obstruction:
duodenum (537.3)
intestine (560.81)
568.8	Other specified disorders of peritoneum
568.81	Hemoperitoneum (nontraumatic)
568.82	Peritoneal effusion (chronic)
Excludes:	ascites NOS (789.51-789.59)
568.89	Other
Peritoneal:
cyst
granuloma
568.9	Unspecified disorder of peritoneum
569	Other disorders of intestine
569.0	Anal and rectal polyp
Anal and rectal polyp NOS
Excludes:	adenomatous anal and rectal polyp (211.4)
569.1	Rectal prolapse
Procidentia:
anus (sphincter)
rectum (sphincter)
Proctoptosis
Prolapse:
anal canal
rectal mucosa
Excludes:	prolapsed hemorrhoids (455.2, 455.5)
569.2	Stenosis of rectum and anus
Stricture of anus (sphincter)
569.3	Hemorrhage of rectum and anus
Excludes:	gastrointestinal bleeding NOS (578.9)
melena (578.1)
569.4	Other specified disorders of rectum and anus
569.41	Ulcer of anus and rectum
Solitary ulcer of anus (sphincter) or rectum (sphincter)
Stercoral ulcer of anus (sphincter) or rectum (sphincter)
569.42	Anal or rectal pain
569.43	Anal sphincter tear (healed) (old)
Tear of anus, nontraumatic
Use additional code for any associated fecal incontinence (787.6)
Excludes:	anal fissure (565.0)
anal sphincter tear (healed) (old) complicating delivery (654.8)
569.49	Other
Granuloma of rectum (sphincter)
Rupture of rectum (sphincter)
Hypertrophy of anal papillae
Proctitis NOS
Excludes:	fistula of rectum to:
internal organs  see­Alphabetic Index
skin (565.1)
hemorrhoids (455.0-455.9)
incontinence of sphincter ani (787.6)
569.5	Abscess of intestine
Excludes:	appendiceal abscess (540.1)
569.6	Colostomy and enterostomy complications
569.60	Colostomy and enterostomy complication, unspecified
569.61	Infection of colostomy and enterostomy
Use additional code to specify type of infection, such as:
abscess or cellulits of abdomen (682.2)
septicemia (038.0-038.9)
Use additional code to identify organism (041.00-041.9)
569.62	Mechanical complication of colostomy and enterostomy
Malfunction of colostomy and enterostomy
569.69	Other complication
Fistula
Hernia
Prolapse
569.8	Other specified disorders of intestine
569.81	Fistula of intestine, excluding rectum and anus
Fistula:
abdominal wall
enterocolic
enteroenteric
ileorectal
Excludes:	fistula of intestine to internal organs­see Alphabetic Index
persistent postoperative fistula (998.6)
569.82	Ulceration of intestine
Primary ulcer of intestine
Ulceration of colon
Excludes:	that with perforation (569.83)
569.83	Perforation of intestine
569.84	Angiodysplasia of intestine (without mention of hemorrhage)
569.85	Angiodysplasia of intestine with hemorrhage
569.86	Dieulafoy lesion (hemorrhagic) of intestine
569.89	Other
Enteroptosis
Granuloma of intestine
Prolapse of intestine
Pericolitis
Perisigmoiditis
Visceroptosis
Excludes:	gangrene of intestine, mesentery, or omentum (557.0)
hemorrhage of intestine NOS (578.9)
obstruction of intestine (560.0-560.9)
569.9	Unspecified disorder of intestine

OTHER DISEASES OF DIGESTIVE SYSTEM (570-579)

570	Acute and subacute necrosis of liver
Acute hepatic failure
Acute or subacute hepatitis, not specified as infective
Necrosis of liver (acute) (diffuse) (massive) (subacute)
Parenchymatous degeneration of liver
Yellow atrophy (liver) (acute) (subacute)
Excludes:	icterus gravis of newborn (773.0-773.2)
serum hepatitis (070.2-070.3)
that with:
abortion (634-638 with .7, 639.8)
ectopic or molar pregnancy (639.8)
pregnancy, childbirth, or the puerperium (646.7)
viral hepatitis (070.0-070.9)
571	Chronic liver disease and cirrhosis
571.0	Alcoholic fatty liver
571.1	Acute alcoholic hepatitis
Acute alcoholic liver disease
571.2	Alcoholic cirrhosis of liver
Florid cirrhosis
Laennec's cirrhosis (alcoholic)
571.3	Alcoholic liver damage, unspecified
571.4	Chronic hepatitis
Excludes:	viral hepatitis (acute) (chronic) (070.0-070.9)
571.40	Chronic hepatitis, unspecified
571.41	Chronic persistent hepatitis
571.49	Other
Chronic hepatitis:
active
aggressive
Recurrent hepatitis
571.5	Cirrhosis of liver without mention of alcohol
Cirrhosis of liver:
NOS
cryptogenic
macronodular
micronodular
posthepatitic
postnecrotic
Healed yellow atrophy (liver)
Portal cirrhosis
571.6	Biliary cirrhosis
Chronic nonsuppurative destructive cholangitis
Cirrhosis:
cholangitic
cholestatic
571.8	Other chronic nonalcoholic liver disease
Chronic yellow atrophy (liver)
Fatty liver, without mention of alcohol
571.9	Unspecified chronic liver disease without mention of alcohol
572	Liver abscess and sequelae of chronic liver disease
572.0	Abscess of liver
Excludes:	amebic liver abscess (006.3)
572.1	Portal pyemia
Phlebitis of portal vein
Portal thrombophlebitis
Pylephlebitis
Pylethrombophlebitis
572.2	Hepatic coma
Hepatic encephalopathy
Hepatocerebral intoxication
Portal-systemic encephalopathy
Excludes:	hepatic coma associated with viral hepatitis - see category 070
572.3	Portal hypertension
572.4	Hepatorenal syndrome
Excludes:	that following delivery (674.8)
572.8	Other sequelae of chronic liver disease
573	Other disorders of liver
Excludes:	amyloid or lardaceous degeneration of liver (277.39)
congenital cystic disease of liver (751.62)
glycogen infiltration of liver (271.0)
hepatomegaly NOS (789.1)
portal vein obstruction (452)
573.0	Chronic passive congestion of liver
573.1	Hepatitis in viral diseases classified elsewhere
Code first underlying disease, as:
Coxsackie virus disease (074.8)
cytomegalic inclusion virus disease (078.5)
infectious mononucleosis (075)
Excludes:	hepatitis (in):
mumps (072.71)
viral (070.0-070.9)
yellow fever (060.0-060.9)
573.2	Hepatitis in other infectious diseases classified elsewhere
Code first underlying disease, as:
malaria (084.9)
Excludes:	hepatitis in:
late syphilis (095.3)
secondary syphilis (091.62)
toxoplasmosis (130.5)
573.3	Hepatitis, unspecified
Toxic (noninfectious) hepatitis
Use additional E code to identify cause
573.4	Hepatic infarction
573.8	Other specified disorders of liver
Hepatoptosis
573.9	Unspecified disorder of liver
574	Cholelithiasis
The following fifth-digit subclassification is for use with category 574:
0	without mention of obstruction
1	with obstruction
574.0	Calculus of gallbladder with acute cholecystitis
Biliary calculus with acute cholecystitis
Calculus of cystic duct with acute cholecystitis
Cholelithiasis with acute cholecystitis
Any condition classifiable to 574.2 with acute cholecystitis
574.1	Calculus of gallbladder with other cholecystitis
Biliary calculus with cholecystitis
Calculus of cystic duct with cholecystitis
Cholelithiasis with cholecystitis
Cholecystitis with cholelithiasis NOS
Any condition classifiable to 574.2 with cholecystitis (chronic)
574.2	Calculus of gallbladder without mention of cholecystitis
Biliary:
calculus NOS
colic NOS
Calculus of cystic duct
Cholelithiasis NOS
Colic (recurrent) of gallbladder
Gallstone (impacted)
574.3	Calculus of bile duct with acute cholecystitis
Calculus of bile duct [any] with acute cholecystitis
Choledocholithiasis with acute cholecystitis
Any condition classifiable to 574.5 with acute cholecystitis
574.4	Calculus of bile duct with other cholecystitis
Calculus of bile duct [any] with cholecystitis (chronic)
Choledocholithiasis with cholecystitis (chronic)
Any condition classifiable to 574.5 with cholecystitis (chronic)
574.5	Calculus of bile duct without mention of cholecystitis
Calculus of:
bile duct [any]
common duct
hepatic duct
Choledocholithiasis
Hepatic:
colic (recurrent)
lithiasis
574.6	Calculus of gallbladder and bile duct with acute cholecystitis
Any condition classifiable to 574.0 and 574.3
574.7	Calculus of gallbladder and bile duct with other cholecystitis
Any condition classifiable to 574.1 and 574.4
574.8	Calculus of gallbladder and bile duct with acute and chronic cholecystitis
Any condition classifiable to 574.6 and 574.7
574.9	Calculus of gallbladder and bile duct without cholecystitis
Any condition classifiable to 574.2 and 574.5
575	Other disorders of gallbladder
575.0	Acute cholecystitis
Abscess of gallbladder without mention of calculus
Angiocholecystitis without mention of calculus
Cholecystitis without mention of calculus:
emphysematous (acute)
gangrenous
suppurative
Empyema of gallbladder without mention of calculus
Gangrene of gallbladder without mention of calculus
Excludes:	that with:
acute and chronic cholecystitis (575.12)
choledocholithiasis (574.3)
choledocholithiasis and cholelithiasis (574.6)
cholelithiasis (574.0)
575.1	Other cholecystitis
Cholecystitis without mention of calculus:
NOS without mention of calculus
chronic without mention of calculus
Excludes:	that with:
choledocholithiasis (574.4)
choledocholithiasis and cholelithiasis (574.8)
cholelithiasis (574.1)
575.10	Cholecystitis, unspecified
Cholecystitis NOS
575.11	Chronic cholecystitis
575.12	Acute and chronic cholecystitis
575.2	Obstruction of gallbladder
Occlusion of cystic duct or gallbladder without mention of calculus
Stenosis of cystic duct or gallbladder without mention of calculus
Stricture of cystic duct or gallbladder without mention of calculus
575.3	Hydrops of gallbladder
Mucocele of gallbladder
575.4	Perforation of gallbladder
Rupture of cystic duct or gallbladder
575.5	Fistula of gallbladder
Fistula:
cholecystoduodenal
cholecystoenteric
575.6	Cholesterolosis of gallbladder
Strawberry gallbladder
575.8	Other specified disorders of gallbladder
Adhesions (of) cystic duct gallbladder
Atrophy (of) cystic duct gallbladder
Cyst (of) cystic duct gallbladder
Hypertrophy (of) cystic duct gallbladder
Nonfunctioning (of) cystic duct gallbladder
Ulcer (of) cystic duct gallbladder
Biliary dyskinesia
Excludes:	Hartmann's pouch of intestine (V44.3)
nonvisualization of gallbladder (793.3)
575.9	Unspecified disorder of gallbladder
576	Other disorders of biliary tract
Excludes:	that involving the:
cystic duct (575.0-575.9)
gallbladder (575.0-575.9)
576.0	Postcholecystectomy syndrome
576.1	Cholangitis
Cholangitis:
NOS
acute
ascending
chronic
primary
recurrent
sclerosing
secondary
stenosing
suppurative
576.2	Obstruction of bile duct
Occlusion of bile duct, except cystic duct, without mention of calculus
Stenosis of bile duct, except cystic duct, without mention of calculus
Stricture of bile duct, except cystic duct, without mention of calculus
Excludes:	congenital (751.61)
that with calculus (574.3-574.5 with fifth-digit 1)
576.3	Perforation of bile duct
Rupture of bile duct, except cystic duct
576.4	Fistula of bile duct
Choledochoduodenal fistula
576.5	Spasm of sphincter of Oddi
576.8	Other specified disorders of biliary tract
Adhesions of bile duct [any]
Atrophy of bile duct [any]
Cyst of bile duct [any]
Hypertrophy of bile duct [any]
Stasis of bile duct [any]
Ulcer of bile duct [any]
Excludes:	congenital choledochal cyst (751.69)
576.9	Unspecified disorder of biliary tract
577	Diseases of pancreas
577.0	Acute pancreatitis
Abscess of pancreas
Necrosis of pancreas:
acute
infective
Pancreatitis:
NOS
acute (recurrent)
apoplectic
hemorrhagic
subacute
suppurative
Excludes:	mumps pancreatitis (072.3)
577.1	Chronic pancreatitis
Chronic pancreatitis:
NOS
infectious
interstitial
Pancreatitis:
painless
recurrent
relapsing
577.2	Cyst and pseudocyst of pancreas
577.8	Other specified diseases of pancreas
Atrophy of pancreas
Calculus of pancreas
Cirrhosis of pancreas
Fibrosis of pancreas
Pancreatic:
infantilism
necrosis:
NOS
aseptic
fat
Pancreatolithiasis
Excludes:	fibrocystic disease of pancreas (277.00-277.09)
islet cell tumor of pancreas (211.7)
pancreatic steatorrhea (579.4)
577.9	Unspecified disease of pancreas
578	Gastrointestinal hemorrhage
Excludes:	that with mention of:
angiodysplasia of stomach and duodenum (537.83)
angiodysplasia of intestine (569.85)
diverticulitis, intestine:
large (562.13)
small (562.03)
diverticulosis, intestine:
large (562.12)
small (562.02)
gastritis and duodenitis (535.0-535.6)
ulcer:
duodenal, gastric, gastrojejunal, or peptic (531.00-534.91)
578.0	Hematemesis
Vomiting of blood
578.1	Blood in stool
Melena
Excludes:	melena of the newborn (772.4, 777.3)
occult blood (792.1)
578.9	Hemorrhage of gastrointestinal tract, unspecified
Gastric hemorrhage
Intestinal hemorrhage
579	Intestinal malabsorption
579.0	Celiac disease
Celiac:
crisis
infantilism
rickets
Gee (-Herter) disease
Gluten enteropathy
Idiopathic steatorrhea
Nontropical sprue
579.1	Tropical sprue
Sprue:
NOS
tropical
Tropical steatorrhea
579.2	Blind loop syndrome
Postoperative blind loop syndrome
579.3	Other and unspecified postsurgical nonabsorption
Hypoglycemia following gastrointestinal surgery
Malnutrition following gastrointestinal surgery
579.4	Pancreatic steatorrhea
579.8	Other specified intestinal malabsorption
Enteropathy:
exudative
protein-losing
Steatorrhea (chronic)
579.9	Unspecified intestinal malabsorption
Malabsorption syndrome NOS