Search Browse Crosswalk Fees Tools Pricing

Codelle

AI-powered medical coding assistant for healthcare practices and billers.

Pricing Privacy Terms

© 2026 Codelle. All rights reserved.

CPT® copyright 2026 American Medical Association. All rights reserved. CPT is a registered trademark of the American Medical Association. Applicable FARS/DFARS restrictions apply to government use. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use.

ICD-10-CM K12.3 — Oral mucositis (ulcerative) | Codelle

ICD-10-CM/K12/K12.3

K12.3

ICD-10-CM

Oral mucositis (ulcerative)

Clinical Notes

Inclusion Terms

Mucositis (oral) (oropharyneal)

Excludes 2 — Not included here

gastrointestinal mucositis (ulcerative) (K92.81)
mucositis (ulcerative) of vagina and vulva (N76.81)
nasal mucositis (ulcerative) (J34.81)

Code Hierarchy

▲K12Stomatitis and related lesions

K12.3(current)

Subcodes (5)

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)

Same Category

K12Stomatitis and related lesions K12.0Recurrent oral aphthae K12.1Other forms of stomatitis K12.2Cellulitis and abscess of mouth K12.30Oral mucositis (ulcerative), unspecified K12.31

Oral 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)