C43
C43: Malignant melanoma of skin
Non-billable headerICD-10-CM
C43 is a non-billable header ICD-10-CM code for malignant melanoma of skin. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- melanoma in situ (D03.-)
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Other codes that can never be billed with C43
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead C43
10 child codes. Green means billable.
- C43.0Malignant melanoma of lip
- C43.1Malignant melanoma of eyelid, including canthus
- C43.2Malignant melanoma of ear and external auricular canal
- C43.3Malignant melanoma of other and unspecified parts of face
- C43.4Malignant melanoma of scalp and neck
- C43.5Malignant melanoma of trunk
- C43.6Malignant melanoma of upper limb, including shoulder
- C43.7Malignant melanoma of lower limb, including hip
- C43.8Malignant melanoma of overlapping sites of skin
- C43.9Malignant melanoma of skin, unspecified