C4A.12
C4A.12: Merkel cell carcinoma of left eyelid, including canthus
Non-billable headerICD-10-CMleft
C4A.12 is a non-billable header ICD-10-CM code for merkel cell carcinoma of left eyelid, including canthus. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with C4A.12
Their own Excludes1 notes name this code, so the conflict is not listed above.
- C44Other and unspecified malignant neoplasm of skin
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 C4A.12
2 child codes. Green means billable.