N61.20 vs O92
N61.20 (Granulomatous mastitis, unspecified breast) compared with O92 (Other disorders of breast and disorders of lactation associated with pregnancy and the puerperium), 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. N61.20 carries an Excludes1 note covering O92: “disorders of breast associated with childbirth (O91-O92)”
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
| N61.20Granulomatous mastitis, unspecified breast | O92Other disorders of breast and disorders of lactation associated with pregnancy and the puerperium | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Granulomatous mastitis, unspecified breast is a billable ICD-10-CM diagnosis code (N61.20). | Other disorders of breast and disorders of lactation associated with pregnancy and the puerperium is a non-billable ICD-10-CM category code (O92). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources