C43.7 — Malignant melanoma of lower limb, including hip
C43.7 is a non-billable header ICD-10-CM code for malignant melanoma of lower limb, including hip. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 inherited from the categories above C43.7
These are not written on C43.7, but they bind it: a note on a category applies to every code beneath it. Billing C43.7 with anything listed here is a denial.
Excludes2 inherited from the categories above C43.7
Also inherited, and the opposite of Excludes1: these conditions are not part of C43.7, but a patient can have both, so you may code both.
Other codes that can never be billed with C43.7
These codes carry an Excludes1 note pointing at C43.7. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C43.7 alone.
- C44Other and unspecified malignant neoplasm of skin
Risk adjustment
C43.7 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code history
C43.7 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead C43.7
3 child codes. Green means billable.
Related codes at this level
Codes that share C43. If C43.7 is not quite right, the correct code is usually one of these.
- 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
- C43.8Malignant melanoma of overlapping sites of skin
- C43.9Malignant melanoma of skin, unspecified
Questions about C43.7
- Is C43.7 a billable ICD-10-CM code?
- No. C43.7 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does C43.7 sit in the tabular list?
- Neoplasms (C00-D49), in the block Melanoma and other malignant neoplasms of skin (C43-C44).
- What cannot be coded together with C43.7?
- C43.7 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above C43.7 (C43) and apply to it just the same.