C4A.61: Merkel cell carcinoma of right upper limb, including shoulder
C4A.61 is the billable ICD-10-CM diagnosis code for Merkel cell carcinoma of right upper limb, including shoulder. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code C4A.61?
C4A.61 is the ICD-10-CM diagnosis code for Merkel cell carcinoma of right upper limb, including shoulder. It belongs to category C4A (Merkel cell carcinoma).
Is C4A.61 a billable code?
Yes. C4A.61 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does C4A.61 belong to?
C4A.61 is part of ICD-10-CM category C4A — Merkel cell carcinoma, which has 48 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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