N63 vs O92
N63 (Unspecified lump in 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. N63 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
| N63Unspecified lump in breast | O92Other disorders of breast and disorders of lactation associated with pregnancy and the puerperium | |
|---|---|---|
| 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 | Unspecified lump in breast is a non-billable ICD-10-CM category code (N63). | Other disorders of breast and disorders of lactation associated with pregnancy and the puerperium is a non-billable ICD-10-CM category code (O92). |
| Includes | Nodule(s) NOS in breast | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources