C4A.10 - Merkel cell carcinoma of unspecified eyelid, including canthus

Applicable to Merkel cell carcinoma of unspecified eyelid, including canthus
The 2025 edition of ICD10-CM C4A.10 became effective on October 1, 2024.
This is the American ICD10-CM version of C4A.10 - other international versions of ICD10 C4A.10 may differ.
C4A.10 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above C4A.10 contain annotation back-references that may be applicable to C4A.10: