C44.10 — Unspecified malignant neoplasm of skin of eyelid, including canthus
C44.10 is a non-billable header ICD-10-CM code for unspecified malignant neoplasm of skin of eyelid, including canthus. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 inherited from the categories above C44.10
These are not written on C44.10, but they bind it: a note on a category applies to every code beneath it. Billing C44.10 with anything listed here is a denial.
Other codes that can never be billed with C44.10
These codes carry an Excludes1 note pointing at C44.10. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C44.10 alone.
- C76Malignant neoplasm of other and ill-defined sites
Risk adjustment
C44.10 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
C44.10 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 C44.10
3 child codes. Green means billable.
Related codes at this level
Codes that share C44.1. If C44.10 is not quite right, the correct code is usually one of these.
Questions about C44.10
- Is C44.10 a billable ICD-10-CM code?
- No. C44.10 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does C44.10 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 C44.10?
- C44.10 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 C44.10 (C44.1, C44) and apply to it just the same.