K13 Other of and Includes: epithelial disturbances of tongue 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 use (Z87.891) occupational exposure to environmental tobacco smoke (Z57.31) tobacco dependence (F17.-) tobacco use (Z72.0) Excludes2: certain disorders of gingiva and edentulous alveolar ridge (K05-K06) cysts of oral region (K09.-) diseases of tongue (K14.-) and related lesions (K12.-) K13.0 Diseases of Abscess of lips Angular Cellulitis of lips Cheilitis NOS Cheilodynia Cheilosis Exfoliative cheilitis Fistula of lips Glandular cheilitis Hypertrophy of lips Perlèche NEC Excludes1: ariboflavinosis (E53.0) cheilitis due to radiation-related disorders (L55-L59) congenital fistula of lips (Q38.0) congenital hypertrophy of lips (Q18.6) Perlèche due to (B37.83) Perlèche due to deficiency (E53.0) K13.1 Cheek and lip biting K13.2 and other disturbances of oral epithelium, including tongue Excludes1: carcinoma in situ of oral epithelium (D00.0-) (K13.3) K13.21 Leukoplakia of oral mucosa, including tongue Leukokeratosis of oral mucosa Leukoplakia of gingiva, lips, tongue Excludes1: hairy leukoplakia (K13.3) leukokeratosis nicotina palati (K13.24) K13.22 Minimal keratinized residual ridge mucosa Minimal keratinization of alveolar ridge mucosa K13.23 Excessive keratinized residual ridge mucosa Excessive keratinization of alveolar ridge mucosa K13.24 Leukokeratosis nicotina palati Smoker's K13.29 Other disturbances of oral epithelium, including tongue of or tongue Focal epithelial hyperplasia of mouth or tongue of mouth or tongue Other oral epithelium disturbances K13.3 Hairy leukoplakia K13.4 Granuloma and granuloma-like lesions of oral mucosa Eosinophilic granuloma Granuloma pyogenicum Verrucous xanthoma K13.5 Submucous fibrosis of tongue K13.6 Irritative hyperplasia of oral mucosa Excludes2: irritative hyperplasia of edentulous ridge [denture hyperplasia] (K06.2) K13.7 Other and unspecified lesions of oral mucosa K13.70 Unspecified lesions of oral mucosa K13.79 Other lesions of oral mucosa Focal oral mucinosis