| K13 | Other diseases of lip and oral mucosa |
| | Diseases of lips |
| | Cheek and lip biting |
| | Leukoplakia and other disturbances of oral epithelium, including tongue |
| | Leukoplakia of oral mucosa, including tongue |
| | Minimal keratinized residual ridge mucosa |
| | Excessive keratinized residual ridge mucosa |
| | Leukokeratosis nicotina palati |
| | Other disturbances of oral epithelium, including tongue |
| | Hairy leukoplakia |
| | Granuloma and granuloma-like lesions of oral mucosa |
| | Oral submucous fibrosis |
| | Irritative hyperplasia of oral mucosa |
| | Other and unspecified lesions of oral mucosa |
| | Unspecified lesions of oral mucosa |
| | Other lesions of oral mucosa |
