C50.122
BillableMalignant neoplasm of central portion of left male breast
HCC Category Mapping
V28HCC 23 — Melanoma and Other Skin Cancers
0.251V24HCC 12 — Breast, Prostate, and Other Cancers and Tumors
0.150ESRDHCC 12 — Breast, Prostate, and Other Cancers and Tumors
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
Cancer that develops in the central portion (middle area) of the left male breast.
Coding Tips
- •Male breast cancer is less common than female breast cancer; ensure documentation confirms male patient
- •Verify laterality is documented as left; if right or unspecified, different codes apply
Clinical Significance
Malignant neoplasm of the central portion of left male breast represents invasive breast cancer requiring staging, treatment planning, and ongoing surveillance. Breast cancer is risk-adjusted because it demands significant healthcare resources including surgery, radiation, chemotherapy, hormonal therapy, and long-term monitoring. Male breast cancer accounts for less than 1% of all breast cancers, making accurate gender-specific coding particularly important for tracking and research.
Documentation Requirements
- ✓Pathologic confirmation of invasive malignancy (biopsy with histologic type — ductal, lobular, etc.)
- ✓Laterality: left breast
- ✓Gender documented as male to support gender-specific code selection
- ✓Quadrant or subsite location: central portion
- ✓Tumor size (T stage) and grade
- ✓Lymph node status (N stage) — axillary, sentinel node biopsy results
- ✓Estrogen receptor, progesterone receptor, and HER2 status
- ✓Stage grouping (I-IV)
- ✓Current treatment status (active treatment, hormonal therapy, surveillance)
Commonly Confused Codes
C50.121 — Central portion of right male breast; verify lateralityC50.129 — Unspecified male breast central portion; use only when laterality unknownC50.112 — Same laterality but female breast; verify patient genderC50.021-C50.029 — Nipple and areola of male breast; central portion is distinct from the nipple-areolar complexN62 — Gynecomastia; benign, not malignant — do not confuse with male breast cancerD05.1x — Carcinoma in situ of breast; in situ vs. invasive distinction