N77 vs O86
N77 (Vulvovaginal ulceration and inflammation in diseases classified elsewhere) compared with O86 (Other puerperal infections), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. N77 carries an Excludes1 note covering O86: “pregnancy, childbirth and the puerperium (O23.-, O75.3, O85, O86.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| N77Vulvovaginal ulceration and inflammation in diseases classified elsewhere | O86Other puerperal infections | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Vulvovaginal ulceration and inflammation in diseases classified elsewhere is a non-billable ICD-10-CM category code (N77). | Other puerperal infections is a non-billable ICD-10-CM category code (O86). |
| Use additional code | — | 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