ICD-10-CM · Chapter 11 · K00–K95
K12.3
Oral mucositis (ulcerative)
Diseases of the digestive system
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- K12.3
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 11 — Diseases of the digestive system
- Category
- K12 — Stomatitis and related lesions
- Specificity
- 4 characters
How coders use this code
ICD-10-CM K12.3 is a category (header) for oral mucositis (ulcerative). It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in K12
- K12Stomatitis and related lesions
- K12.0Recurrent oral aphthae
- K12.1Other forms of stomatitis
- K12.2Cellulitis and abscess of mouth
- K12.30Oral mucositis (ulcerative), unspecified
- K12.31Oral mucositis (ulcerative) due to antineoplastic therapy
- K12.32Oral mucositis (ulcerative) due to other drugs
- K12.33Oral mucositis (ulcerative) due to radiation
- K12.39Other oral mucositis (ulcerative)
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