ICD-10-CM Alphabetic Index · FY 2026 13 Entries
Mucositis in the ICD-10-CM Index ICD-10-CM
The main term Mucositis (ulcerative) carries 13 index entries pointing to 8 ICD-10-CM codes. The default entry is K12.30, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
13
Index Entries
8
Codes Referenced
K12.30
Default Code
M
Letter
13 of 13 shown
ICD-10-CM
Index Entries Under Mucositis 13 entries · 8 codes
Mucositis (ulcerative) K12.30
due to drugs NEC K12.32
gastrointestinal K92.81
mouth (oral) (oropharyngeal) K12.30
due to antineoplastic therapy K12.31
due to drugs NEC K12.32
due to radiation K12.33
specified NEC K12.39
viral K12.39
nasal J34.81
oral cavity see Mucositis, mouth
oral soft tissues see Mucositis, mouth
vagina and vulva N76.81
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
