ICD-10 Code for Stomatitis
Also indexed as (denture) (ulcerative)
The ICD-10-CM code for stomatitis is K12.1 — Other forms of stomatitis. This is the code the Alphabetic Index gives for stomatitis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
Billable
Which stomatitis code should you use?
The Alphabetic Index lists 16 codes under Stomatitis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| angular | K13.0 | Diseases of lips | |
| aphthous | K12.0 | Recurrent oral aphthae | |
| bovine | B08.61 | Bovine stomatitis | |
| candidal | B37.0 | Candidal stomatitis | |
| catarrhal | K12.1 | Other forms of stomatitis | |
| diphtheritic | A36.89 | Other diphtheritic complications | |
| epidemic | B08.8 | Other specified viral infections characterized by skin and mucous membrane lesions | |
| epizootic | B08.8 | Other specified viral infections characterized by skin and mucous membrane lesions | |
| follicular | K12.1 | Other forms of stomatitis | |
| gangrenous | A69.0 | Necrotizing ulcerative stomatitis | |
| Geotrichum | B48.3 | Geotrichosis | |
| herpesviral, herpetic | B00.2 | Herpesviral gingivostomatitis and pharyngotonsillitis | |
| herpetiformis | K12.0 | Recurrent oral aphthae | |
| malignant | K12.1 | Other forms of stomatitis | |
| membranous acute | K12.1 | Other forms of stomatitis | |
| monilial | B37.0 | Candidal stomatitis | |
| mycotic | B37.0 | Candidal stomatitis | |
| necrotizing ulcerative | A69.0 | Necrotizing ulcerative stomatitis | |
| parasitic | B37.0 | Candidal stomatitis | |
| septic | K12.1 | Other forms of stomatitis | |
| spirochetal | A69.1 | Other Vincent's infections | |
| suppurative | K12.2 | Cellulitis and abscess of mouth | |
| ulceromembranous | A69.1 | Other Vincent's infections | |
| vesicular | K12.1 | Other forms of stomatitis | |
| Vincent's | A69.1 | Other Vincent's infections |
Stomatitis angular
| due to dietary or vitamin deficiency | E53.0 | Riboflavin deficiency |
Stomatitis due to
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources