Cheek and lip biting

This code describes self-inflicted trauma to the buccal mucosa or labial tissues resulting from repetitive biting. It encompasses both acute and chronic instances of this behavior, which can lead to ulcerations, inflammation, and pain in the affected areas. The biting may be intentional or unintentional, often associated with stress, anxiety, or underlying neurological conditions.

Use this code when documentation clearly indicates a patient presents with lesions, pain, or a history of self-biting of the cheek or lip. This includes cases where the biting is a habit, a manifestation of stress, or a side effect of medication or neurological disorders. Supporting documentation should specify the location (cheek or lip) and the nature of the injury (e.g., ulcer, laceration).

• Differentiate from accidental trauma (e.g., during mastication) if the documentation suggests a habitual or repetitive nature.
• Consider co-occurring mental health diagnoses (e.g., anxiety, OCD) if documented, as these may be contributing factors.
• Do not use for injuries to the tongue; refer to codes within the K14 category for tongue lesions.