ICD-10-CM 2027
ICD-10 code for palate leukoplakia
From the official ICD-10-CM alphabetic index entry “Leukoplakia › palate”. Page updated September 29, 2026.
About coding palate leukoplakia
The ICD-10-CM code for palate leukoplakia is K13.21 (Leukoplakia of oral mucosa, including tongue).
Within K13.2 (leukoplakia and other disturbances of oral epithelium, including tongue), K13.21 is specifically for leukoplakia of oral mucosa, including tongue. Related codes cover minimal keratinized residual ridge mucosa (K13.22), excessive keratinized residual ridge mucosa (K13.23), Leukokeratosis nicotina palati (K13.24) and other disturbances of oral epithelium, including tongue (K13.29).
Don't report K13.21 together with the conditions in its Excludes1 note: hairy leukoplakia (K13.3) and leukokeratosis nicotina palati (K13.24).
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.
Don't confuse with (Excludes1 for K13.21)
Common questions about palate leukoplakia ICD-10 codes
What is the ICD-10 code for palate leukoplakia?
- K13.21 — Leukoplakia of oral mucosa, including tongue.
Is K13.21 billable?
- Yes. K13.21 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K13.21 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K13.21 as a principal diagnosis.
Is K13.21 a CC or MCC?
- No. K13.21 is neither a CC nor an MCC under MS-DRG v44.0.