Chapter XI
Diseases of the digestive system
(K00-K93)

Diseases of oral cavity, salivary glands and jaws
(K00-K14)

K00 Disorders of tooth development and eruption
Excludes: embedded and impacted teeth ( K01.- )
K00.0 Anodontia
Hypodontia
Oligodontia
K00.1 Supernumerary teeth
Distomolar
Fourth molar
Mesiodens
Paramolar
Supplementary teeth
K00.2 Abnormalities of size and form of teeth
Concrescence
Fusion
Gemination
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of teeth
Dens:
· evaginatus
· in dente
· invaginatus
Enamel pearls
Macrodontia
Microdontia
Peg-shaped [conical] teeth
Taurodontism
Tuberculum paramolare
Excludes: tuberculum Carabelli, which is regarded as a normal variation and should not be coded
K00.3 Mottled teeth
Dental fluorosis
Mottling of enamel
Nonfluoride enamel opacities
Excludes: deposits [accretions] on teeth ( K03.6 )
K00.4 Disturbances in tooth formation
Aplasia and hypoplasia of cementum
Dilaceration of tooth
Enamel hypoplasia (neonatal)(postnatal)(prenatal)
Regional odontodysplasia
Turner's tooth
Excludes: Hutchinson's teeth and mulberry molars in congenital syphilis ( A50.5 )
mottled teeth ( K00.3 )
K00.5 Hereditary disturbances in tooth structure, not elsewhere classified
Amelogenesis
Dentinogenesis
Odontogenesis
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imperfecta
Dentinal dysplasia
Shell teeth
K00.6 Disturbances in tooth eruption
Dentia praecox
Natal
Neonatal
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tooth
Premature:
· eruption of tooth
· shedding of primary [deciduous] tooth
Retained [persistent] primary tooth
K00.7 Teething syndrome
K00.8 Other disorders of tooth development
Colour changes during tooth formation
Intrinsic staining of teeth NOS
K00.9 Disorder of tooth development, unspecified
Disorder of odontogenesis NOS

K01 Embedded and impacted teeth
Excludes: embedded and impacted teeth with abnormal position of such teeth or adjacent teeth ( K07.3 )
K01.0 Embedded teeth
An embedded tooth is a tooth that has failed to erupt without obstruction by another tooth.
K01.1 Impacted teeth
An impacted tooth is a tooth that has failed to erupt because of obstruction by another tooth.

K02 Dental caries
K02.0 Caries limited to enamel
White spot lesions [initial caries]
K02.1 Caries of dentine
K02.2 Caries of cementum
K02.3 Arrested dental caries
K02.4 Odontoclasia
Infantile melanodontia
Melanodontoclasia
K02.8 Other dental caries
K02.9 Dental caries, unspecified

K03 Other diseases of hard tissues of teeth
Excludes: bruxism ( F45.8 )
dental caries ( K02.- )
teeth-grinding NOS ( F45.8 )
K03.0 Excessive attrition of teeth
Wear:
· approximal
· occlusal
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of teeth
K03.1 Abrasion of teeth
Abrasion:
· dentifrice
· habitual
· occupational
· ritual
· traditional
Wedge defect NOS
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of teeth
K03.2 Erosion of teeth
Erosion of teeth:
· NOS
· due to:
  · diet
  · drugs and medicaments
  · persistent vomiting
· idiopathic
· occupational
K03.3 Pathological resorption of teeth
Internal granuloma of pulp
Resorption of teeth (external)
K03.4 Hypercementosis
Cementation hyperplasia
K03.5 Ankylosis of teeth
K03.6 Deposits [accretions] on teeth
Dental calculus:
· subgingival
· supragingival
Deposits [accretions] on teeth:
· betel
· black
· green
· materia alba
· orange
· tobacco
Staining of teeth:
· NOS
· extrinsic NOS
K03.7 Posteruptive colour changes of dental hard tissues
Excludes: deposits [accretions] on teeth ( K03.6 )
K03.8 Other specified diseases of hard tissues of teeth
Irradiated enamel
Sensitive dentine
Use additional external cause code (Chapter XX), if desired, to identify radiation, if radiation-induced.
K03.9 Disease of hard tissues of teeth, unspecified

K04 Diseases of pulp and periapical tissues
K04.0 Pulpitis
Pulpal:
· abscess
· polyp
Pulpitis:
· acute
· chronic (hyperplastic)(ulcerative)
· suppurative
K04.1 Necrosis of pulp
Pulpal gangrene
K04.2 Pulp degeneration
Denticles
Pulpal:
· calcifications
· stones
K04.3 Abnormal hard tissue formation in pulp
Secondary or irregular dentine
K04.4 Acute apical periodontitis of pulpal origin
Acute apical periodontitis NOS
K04.5 Chronic apical periodontitis
Apical or periapical granuloma
Apical periodontitis NOS
K04.6 Periapical abscess with sinus
Dental
Dentoalveolar
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abscess with sinus
K04.7 Periapical abscess without sinus
Dental
Dentoalveolar
Periapical
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abscess NOS
K04.8 Radicular cyst
Cyst:
· apical (periodontal)
· periapical
· residual radicular
Excludes: lateral periodontal cyst ( K09.0 )
K04.9 Other and unspecified diseases of pulp and periapical tissues

K05 Gingivitis and periodontal diseases
K05.0 Acute gingivitis
Excludes: acute necrotizing ulcerative gingivitis ( A69.1 )
herpesviral [herpes simplex] gingivostomatitis ( B00.2 )
K05.1 Chronic gingivitis
Gingivitis (chronic):
· NOS
· desquamative
· hyperplastic
· simple marginal
· ulcerative
K05.2 Acute periodontitis
Acute pericoronitis
Parodontal abscess
Periodontal abscess
Excludes: acute apical periodontitis ( K04.4 )
periapical abscess ( K04.7 )
periapical abscess with sinus ( K04.6 )
K05.3 Chronic periodontitis
Chronic pericoronitis
Periodontitis:
· NOS
· complex
· simplex
K05.4 Periodontosis
Juvenile periodontosis
K05.5 Other periodontal diseases
K05.6 Periodontal disease, unspecified

K06 Other disorders of gingiva and edentulous alveolar ridge
Excludes: atrophy of edentulous alveolar ridge ( K08.2 )
gingivitis:
· NOS ( K05.1 )
· acute ( K05.0 )
· chronic ( K05.1 )
K06.0 Gingival recession
Gingival recession (generalized)(localized)(postinfective)(post-operative)
K06.1 Gingival enlargement
Gingival fibromatosis
K06.2 Gingival and edentulous alveolar ridge lesions associated with trauma
Irritative hyperplasia of edentulous ridge [denture hyperplasia]
Use additional external cause code (Chapter XX), if desired, to identify cause.
K06.8 Other specified disorders of gingiva and edentulous alveolar ridge
Fibrous epulis
Flabby ridge
Giant cell epulis
Peripheral giant cell granuloma
Pyogenic granuloma of gingiva
K06.9 Disorder of gingiva and edentulous alveolar ridge, unspecified

K07 Dentofacial anomalies [including malocclusion]
Excludes: hemifacial atrophy or hypertrophy ( Q67.4 )
unilateral condylar hyperplasia or hypoplasia ( K10.8 )
K07.0 Major anomalies of jaw size
Hyperplasia, hypoplasia:
· mandibular
· maxillary
Macrognathism (mandibular)(maxillary)
Micrognathism (mandibular)(maxillary)
Excludes: acromegaly ( E22.0 )
Robin's syndrome ( Q87.0 )
K07.1 Anomalies of jaw-cranial base relationship
Asymmetry of jaw
Prognathism (mandibular)(maxillary)
Retrognathism (mandibular)(maxillary)
K07.2 Anomalies of dental arch relationship
Crossbite (anterior)(posterior)
Disto-occlusion
Mesio-occlusion
Midline deviation of dental arch
Openbite (anterior)(posterior)
Overbite (excessive):
· deep
· horizontal
· vertical
Overjet
Posterior lingual occlusion of mandibular teeth
K07.3 Anomalies of tooth position
Crowding
Diastema
Displacement
Rotation
Spacing, abnormal
Transposition
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of tooth or teeth
Impacted or embedded teeth with abnormal position of such teeth or adjacent teeth
Excludes: embedded and impacted teeth without abnormal position ( K01.- )
K07.4 Malocclusion, unspecified
K07.5 Dentofacial functional abnormalities
Abnormal jaw closure
Malocclusion due to:
· abnormal swallowing
· mouth breathing
· tongue, lip or finger habits
Excludes: bruxism ( F45.8 )
teeth-grinding NOS ( F45.8 )
K07.6 Temporomandibular joint disorders
Costen's complex or syndrome
Derangement of temporomandibular joint
Snapping jaw
Temporomandibular joint-pain-dysfunction syndrome
Excludes: current temporomandibular joint:
· dislocation ( S03.0 )
· strain ( S03.4 )
K07.8 Other dentofacial anomalies
K07.9 Dentofacial anomaly, unspecified

K08 Other disorders of teeth and supporting structures
K08.0 Exfoliation of teeth due to systemic causes
K08.1 Loss of teeth due to accident, extraction or local periodontal disease
K08.2 Atrophy of edentulous alveolar ridge
K08.3 Retained dental root
K08.8 Other specified disorders of teeth and supporting structures
Enlargement of alveolar ridge NOS
Irregular alveolar process
Toothache NOS
K08.9 Disorder of teeth and supporting structures, unspecified

K09 Cysts of oral region, not elsewhere classified
Includes: lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion
Excludes: radicular cyst ( K04.8 )
K09.0 Developmental odontogenic cysts
Cyst:
· dentigerous
· eruption
· follicular
· gingival
· lateral periodontal
· primordial
Keratocyst
K09.1 Developmental (nonodontogenic) cysts of oral region
Cyst (of):
· globulomaxillary
· incisive canal
· median palatal
· nasopalatine
· palatine papilla
K09.2 Other cysts of jaw
Cyst of jaw:
· NOS
· aneurysmal
· haemorrhagic
· traumatic
Excludes: latent bone cyst of jaw ( K10.0 )
Stafne's cyst ( K10.0 )
K09.8 Other cysts of oral region, not elsewhere classified
Dermoid cyst
Epidermoid cyst
Lymphoepithelial cyst
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of mouth
Epstein's pearl
Nasoalveolar cyst
Nasolabial cyst
K09.9 Cyst of oral region, unspecified

K10 Other diseases of jaws
K10.0 Developmental disorders of jaws
Latent bone cyst of jaw
Stafne's cyst
Torus:
· mandibularis
· palatinus
K10.1 Giant cell granuloma, central
Giant cell granuloma NOS
Excludes: peripheral giant cell granuloma ( K06.8 )
K10.2 Inflammatory conditions of jaws
Osteitis
Osteomyelitis (neonatal)
Osteoradionecrosis
Periostitis
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of jaw (acute)(chronic)(suppurative)
Sequestrum of jaw bone
Use additional external cause code (Chapter XX), if desired, to identify radiation, if radiation-induced.
K10.3 Alveolitis of jaws
Alveolar osteitis
Dry socket
K10.8 Other specified diseases of jaws
Cherubism
Exostosis
Fibrous dysplasia
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of jaw
Unilateral condylar:
· hyperplasia
· hypoplasia
K10.9 Disease of jaws, unspecified

K11 Diseases of salivary glands
K11.0 Atrophy of salivary gland
K11.1 Hypertrophy of salivary gland
K11.2 Sialoadenitis
Excludes: epidemic parotitis ( B26.- )
uveoparotid fever [Heerfordt] ( D86.8 )
K11.3 Abscess of salivary gland
K11.4 Fistula of salivary gland
Excludes: congenital fistula of salivary gland ( Q38.4 )
K11.5 Sialolithiasis
Calculus
Stone
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of salivary gland or duct
K11.6 Mucocele of salivary gland
Mucous:
· extravasation cyst
· retention cyst
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of salivary gland
Ranula
K11.7 Disturbances of salivary secretion
Hypoptyalism
Ptyalism
Xerostomia
Excludes: dry mouth NOS ( R68.2 )
K11.8 Other diseases of salivary glands
Benign lymphoepithelial lesion of salivary gland
Mikulicz' disease
Necrotizing sialometaplasia
Sialectasia
Stenosis
Stricture
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of salivary duct
Excludes: sicca syndrome [Sjögren] ( M35.0 )
K11.9 Disease of salivary gland, unspecified
Sialoadenopathy NOS

K12 Stomatitis and related lesions
Excludes: cancrum oris ( A69.0 )
cheilitis ( K13.0 )
gangrenous stomatitis ( A69.0 )
herpesviral [herpes simplex] gingivostomatitis ( B00.2 )
noma ( A69.0 )
K12.0 Recurrent oral aphthae
Aphthous stomatitis (major)(minor)
Bednar's aphthae
Periadenitis mucosa necrotica recurrens
Recurrent aphthous ulcer
Stomatitis herpetiformis
K12.1 Other forms of stomatitis
Stomatitis:
· NOS
· denture
· ulcerative
· vesicular
K12.2 Cellulitis and abscess of mouth
Cellulitis of mouth (floor)
Submandibular abscess
Excludes: abscess (of):
· periapical ( K04.6-K04.7 )
· periodontal ( K05.2 )
· peritonsillar ( J36 )
· salivary gland ( K11.3 )
· tongue ( K14.0 )

K13 Other diseases of lip and oral mucosa
Includes: epithelial disturbances of tongue
Excludes: certain disorders of gingiva and edentulous alveolar ridge ( K05-K06 )
cysts of oral region ( K09.- )
diseases of tongue ( K14.- )
stomatitis and related lesions ( K12.- )
K13.0 Diseases of lips
Cheilitis:
· NOS
· angular
· exfoliative
· glandular
Cheilodynia
Cheilosis
Perlèche NEC
Excludes: ariboflavinosis ( E53.0 )
cheilitis due to radiation-related disorders ( L55-L59 )
perlèche due to:
· candidiasis ( B37.8 )
· riboflavin deficiency ( E53.0 )
K13.1 Cheek and lip biting
K13.2 Leukoplakia and other disturbances of oral epithelium, including tongue
Erythroplakia
Leukoedema
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of oral epithelium, including tongue
Leukokeratosis nicotina palati
Smoker's palate
Excludes: hairy leukoplakia ( K13.3 )
K13.3 Hairy leukoplakia
K13.4 Granuloma and granuloma-like lesions of oral mucosa
Eosinophilic granuloma
Granuloma pyogenicum
Verrucous xanthoma
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of oral mucosa
K13.5 Oral submucous fibrosis
Submucous fibrosis of tongue
K13.6 Irritative hyperplasia of oral mucosa
Excludes: irritative hyperplasia of edentulous ridge [denture hyperplasia] ( K06.2 )
K13.7 Other and unspecified lesions of oral mucosa
Focal oral mucinosis

K14 Diseases of tongue
Excludes: erythroplakia
focal epithelial hyperplasia
leukoedema
leukoplakia
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of tongue ( K13.2 )
hairy leukoplakia ( K13.3 )
macroglossia (congenital) ( Q38.2 )
submucous fibrosis of tongue ( K13.5 )
K14.0 Glossitis
Abscess
Ulceration (traumatic)
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of tongue
Excludes: atrophic glossitis ( K14.4 )
K14.1 Geographic tongue
Benign migratory glossitis
Glossitis areata exfoliativa
K14.2 Median rhomboid glossitis
K14.3 Hypertrophy of tongue papillae
Black hairy tongue
Coated tongue
Hypertrophy of foliate papillae
Lingua villosa nigra
K14.4 Atrophy of tongue papillae
Atrophic glossitis
K14.5 Plicated tongue
Fissured
Furrowed
Scrotal
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tongue
Excludes: fissured tongue, congenital ( Q38.3 )
K14.6 Glossodynia
Glossopyrosis
Painful tongue
K14.8 Other diseases of tongue
Atrophy
Crenated
Enlargement
Hypertrophy
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(of) tongue
K14.9 Disease of tongue, unspecified
Glossopathy NOS