ICD-10-CM 2027
ICD-10 code for biting
From the official ICD-10-CM alphabetic index entry “Biting, cheek or lip”. Page updated September 29, 2026.
About coding biting
The ICD-10-CM code for biting is K13.1 (Cheek and lip biting).
Within K13 (other diseases of lip and oral mucosa), K13.1 is specifically for cheek and lip biting. Related codes cover diseases of lips (K13.0), leukoplakia and other disturbances of oral epithelium, including tongue (K13.2), Hairy leukoplakia (K13.3), granuloma and granuloma-like lesions of oral mucosa (K13.4), oral submucous fibrosis (K13.5), Irritative hyperplasia of oral mucosa (K13.6) and other and unspecified lesions of oral mucosa (K13.7).
Use an 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) and 2 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about biting ICD-10 codes
What is the ICD-10 code for biting?
- K13.1 — Cheek and lip biting.
Is K13.1 billable?
- Yes. K13.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K13.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K13.1 as a principal diagnosis.
Is K13.1 a CC or MCC?
- No. K13.1 is neither a CC nor an MCC under MS-DRG v44.0.