C44.591

C44.591: Other specified malignant neoplasm of skin of breast

Billable / specific codeICD-10-CM

C44.591 is a billable, specific ICD-10-CM code for other specified malignant neoplasm of skin of breast. It is valid for submission on a claim.

Check C44.591 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above C44.591

A category’s note binds every code beneath it.

Written on C44.5: Other and unspecified malignant neoplasm of skin of trunk

anus NOS (C21.0)
scrotum (C63.2)

Written on C44: Other and unspecified malignant neoplasm of skin

Kaposi's sarcoma of skin (C46.0)
malignant melanoma of skin (C43.-)
malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2)
Merkel cell carcinoma (C4A.-)

Other codes that can never be billed with C44.591

Their own Excludes1 notes name this code, so the conflict is not listed above.

C50Malignant neoplasm of breast
C76Malignant neoplasm of other and ill-defined sites

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

C44.591 is named in 65 Medicare coverage policies: 65 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

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Code history

Unchanged in every release from FY2024 to FY2027.