C44 – Other and unspecified malignant neoplasm of skin

ICD-10-CM 2027 diagnosis code · Melanoma and other malignant neoplasms of skin

Non-billable header

ICD-10-CM code C44

Code: C44 (claims format: C44)
Description: Other and unspecified malignant neoplasm of skin
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: C43-C44 Melanoma and other malignant neoplasms of skin

Billable codes under C44

C44 is a header code and cannot be used on claims. Choose the most specific code:

C44.0 – Other and unspecified malignant neoplasm of skin of lipHeader (more codes below)
C44.1 – Other and unspecified malignant neoplasm of skin of eyelid, including canthusHeader (more codes below)
C44.2 – Other and unspecified malignant neoplasm of skin of ear and external auricular canalHeader (more codes below)
C44.3 – Other and unspecified malignant neoplasm of skin of other and unspecified parts of faceHeader (more codes below)
C44.4 – Other and unspecified malignant neoplasm of skin of scalp and neckHeader (more codes below)
C44.5 – Other and unspecified malignant neoplasm of skin of trunkHeader (more codes below)
C44.6 – Other and unspecified malignant neoplasm of skin of upper limb, including shoulderHeader (more codes below)
C44.7 – Other and unspecified malignant neoplasm of skin of lower limb, including hipHeader (more codes below)
C44.8 – Other and unspecified malignant neoplasm of overlapping sites of skinHeader (more codes below)
C44.9 – Other and unspecified malignant neoplasm of skin, unspecifiedHeader (more codes below)

Notes for C44

Includes:

malignant neoplasm of sebaceous glands
malignant neoplasm of sweat glands

Excludes1 (not coded here):

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.-)

Frequently asked questions

What is ICD-10 code C44?

C44 is the ICD-10-CM code for other and unspecified malignant neoplasm of skin, in the block C43-C44 (Melanoma and other malignant neoplasms of skin).

Is C44 a billable code?

No. C44 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.