N63.25
Unspecified lump in the left breast, overlapping quadrants
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 5 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 9 never code together
N00-N99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 1
N63code
Inclusion terms
- Nodule(s) NOS in breast
Alongside this code 5 same parent — N63.2
N63.20 Unspecified lump in the left breast, unspecified quadrant N63.21 Unspecified lump in the left breast, upper outer quadrant N63.22 Unspecified lump in the left breast, upper inner quadrant N63.23 Unspecified lump in the left breast, lower outer quadrant N63.24 Unspecified lump in the left breast, lower inner quadrant
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.