K13.7Other and unspecified lesions of oral mucosa

K13.7 is the ICD-10-CM diagnosis code for other and unspecified lesions of oral mucosa. It belongs to category K13 (other diseases of lip and oral mucosa), block K00-K14 (diseases of oral cavity and salivary glands) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within K13, choose K13.7 (Other and unspecified lesions of oral mucosa) only when documentation doesn't support a more specific option: diseases of lips (K13.0), cheek and lip biting (K13.1), 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) and Irritative hyperplasia of oral mucosa (K13.6).

To report this condition, pick the subcode that matches the documentation: K13.70 (mucosa) and K13.79 (mucosa).

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 has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.