C44 — Other and unspecified malignant neoplasm of skin

Not billable

Is C44 billable?

No — C44 is a non-billable header code. C44 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath C44.

Billable codes under this header

C44 at a glance

Code	C44
Description	Other and unspecified malignant neoplasm of skin
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with C44 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

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.-)

Includes

Conditions classified to C44.

malignant neoplasm of sebaceous glands
malignant neoplasm of sweat glands

What codes fall under C44? (10)

How long has C44 existed?

C44 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with C44?

ICD-10-CM declares these codes mutually exclusive with C44 — exactly one of each pair can be correct for a given encounter.