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C51.1

Billable

Malignant neoplasm of labium minus

HCC Category Mapping

V28HCC 22Colorectal, Bladder, and Other Cancers
0.000
V24HCC 11Colorectal, Bladder, and Other Cancers
0.306
ESRDHCC 11Colorectal, Bladder, and Other Cancers
0.000

What This Code Means

Cancer that develops in the smaller inner folds of the female external genitalia (labia minora).

Coding Tips

  • Document the histological type and grade when available for treatment planning
  • Note any involvement of adjacent structures for proper staging classification

Clinical Significance

Malignant neoplasm of the labium minus is a vulvar cancer involving the inner, smaller folds of the female external genitalia. This location may present diagnostic challenges as tumors here can extend to involve the vaginal introitus or clitoris. Early-stage vulvar cancer of the labium minus may be treated with wide local excision, while advanced disease may require radical vulvectomy.

Documentation Requirements

  • Anatomical site confirmed as labium minus specifically
  • Histological type and grade
  • TNM staging with depth of stromal invasion
  • Inguinofemoral lymph node status
  • Human Papillomavirus association if documented
  • Surgical margins status if resection performed
  • Extension to adjacent structures documented

Commonly Confused Codes

Code Hierarchy

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