C4A.5
Non-billableMerkel cell carcinoma of trunk
C4A.5 is the ICD-10-CM code for Merkel cell carcinoma of trunk. It is a non-billable category code — use a more specific child code such as C4A.51 for billing.
C00-D49 Neoplasms
Excludes2 — not included here
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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