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C44.591

Billable

Other specified malignant neoplasm of skin of breast

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A malignant skin tumor of the breast area that is not classified as basal cell or squamous cell carcinoma, representing other specified types of skin cancer in this location.

Coding Tips

  • •Distinguish from C44.521 (squamous cell) and C44.511 (basal cell) by confirming histology
  • •Document whether the tumor is on the breast skin surface versus deeper breast tissue

Code Hierarchy

└C44Other and unspecified malignant neoplasm of skin└C44.5Other and unspecified malignant neoplasm of skin of trunk└C44.59Other specified malignant neoplasm of skin of trunk└C44.591Other specified malignant neoplasm of skin of breast
└C44.591Other specified malignant neoplasm of skin of breast

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