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C4A.6

Non-billable

Merkel cell carcinoma of upper limb, including shoulder

C4A.6 is the ICD-10-CM code for Merkel cell carcinoma of upper limb, including shoulder. It is a non-billable category code — use a more specific child code such as C4A.60 for billing.

Status
Header (non-billable)
Chapter
C00-D49
Parent
C4A
Subcodes
3
Edition
FY2026

C00-D49 Neoplasms

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code C4A.6?
C4A.6 is the ICD-10-CM code for "Merkel cell carcinoma of upper limb, including shoulder". It falls under C00-D49 Neoplasms.
Is C4A.6 a billable code?
No — C4A.6 is a non-billable header code. Use a more specific child code (such as C4A.60) for billing.
What are the subcodes of C4A.6?
C4A.6 has 3 more specific child codes, including C4A.60, C4A.61, C4A.62.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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