Code	Title
K00-K95	Diseases of the digestive system (K00-K95)
K00-K14	Diseases of oral cavity and salivary glands (K00-K14)
K13	Other diseases of lip and oral mucosa Use Additional code to identify: alcohol abuse and dependence (F10.-) exposure to environmental tobacco smoke (Z77.22) exposure to tobacco smoke in the perinatal period (P96.81) history of tobacco dependence (Z87.891) occupational exposure to environmental tobacco smoke (Z57.31) tobacco dependence (F17.-) tobacco use (Z72.0) Type 2 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.-) Includes epithelial disturbances of tongue
K13.0	Diseases of lips
K13.1	Cheek and lip biting
K13.2	Leukoplakia and other disturbances of oral epithelium, including tongue
K13.21	Leukoplakia of oral mucosa, including tongue
K13.22	Minimal keratinized residual ridge mucosa
K13.23	Excessive keratinized residual ridge mucosa
K13.24	Leukokeratosis nicotina palati
K13.29	Other disturbances of oral epithelium, including tongue
K13.3	Hairy leukoplakia
K13.4	Granuloma and granuloma-like lesions of oral mucosa
K13.5	Oral submucous fibrosis
K13.6	Irritative hyperplasia of oral mucosa
K13.7	Other and unspecified lesions of oral mucosa
K13.70	Unspecified lesions of oral mucosa
K13.79	Other lesions of oral mucosa

K13 – Other diseases of lip and oral mucosa