ICD-10-CM 2027
ICD-10 code for oral mucosa irritative hyperplasia
From the official ICD-10-CM alphabetic index entry “Hyperplasia, hyperplastic › oral mucosa (irritative)”. Page updated September 29, 2026.
About coding oral mucosa irritative hyperplasia
The ICD-10-CM code for oral mucosa irritative hyperplasia is K13.6 (Irritative hyperplasia of oral mucosa).
Within K13 (other diseases of lip and oral mucosa), K13.6 is specifically for Irritative hyperplasia of oral mucosa. Related codes cover 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 other and unspecified lesions of oral mucosa (K13.7).
The conditions in its Excludes2 note aren't part of K13.6, but may be coded alongside it if the patient has both: irritative hyperplasia of edentulous ridge [denture hyperplasia] (K06.2).
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.
Common questions about oral mucosa irritative hyperplasia ICD-10 codes
What is the ICD-10 code for oral mucosa irritative hyperplasia?
- K13.6 — Irritative hyperplasia of oral mucosa.
Is K13.6 billable?
- Yes. K13.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K13.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K13.6 as a principal diagnosis.
Is K13.6 a CC or MCC?
- No. K13.6 is neither a CC nor an MCC under MS-DRG v44.0.