K12.3 vs N76.81
K12.3 (Oral mucositis (ulcerative)) compared with N76.81 (Mucositis (ulcerative) of vagina and vulva), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. K12.3 carries an Excludes2 note covering N76.81: “mucositis (ulcerative) of vagina and vulva (N76.81)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. N76.81 carries an Excludes2 note covering K12.3: “oral mucositis (ulcerative) (K12.3-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| K12.3Oral mucositis (ulcerative) | N76.81Mucositis (ulcerative) of vagina and vulva | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | N00-N99 — Diseases of the Genitourinary System (N00-N99) |
| Definition | Oral mucositis (ulcerative) is a non-billable ICD-10-CM category code (K12.3). | Mucositis (ulcerative) of vagina and vulva is a billable ICD-10-CM diagnosis code (N76.81). |
| Includes | Mucositis (oral) (oropharyneal) | — |
| Use additional code | code to identify: alcohol abuse and dependence (F10.-) exposure to environmental tobacco smoke (Z77.22) | code (B95-B97), to identify infectious agent |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources