Other disturbances of oral epithelium, including tongue

This code signifies various non-specific abnormalities or disorders affecting the epithelial lining of the oral cavity, including the tongue, that are not classified elsewhere. It encompasses a range of conditions such as benign hyperkeratosis, leukoplakia not specified as dysplastic, or other reactive epithelial changes. This diagnosis indicates a disturbance in the normal cellular structure or appearance of the oral mucosa.

Apply this code when documentation describes an oral epithelial lesion or disturbance that doesn't fit more specific diagnoses like oral lichen planus, specific infections, or malignant/premalignant conditions. It is appropriate for findings such as frictional keratosis, geographic tongue, or other benign epithelial changes without a more precise ICD-10 code. Documentation should clearly state the location (oral cavity, tongue) and the non-specific nature of the epithelial disturbance.

• Do not use this code for dysplastic lesions; instead, refer to codes in the K13.21-K13.22 series for oral epithelial dysplasia.
• Ensure the documentation rules out specific infectious, autoimmune, or neoplastic etiologies before assigning this non-specific code.
• Consider sequencing this code as a secondary diagnosis if the primary reason for the encounter is a symptom (e.g., oral pain) related to the epithelial disturbance.