All ICD10 Codes

C4A.1

Non-Billable
ChapterC00–D49
Ranksubcategory
Official Description

Merkel cell carcinoma of eyelid, including canthus

Use a more specific code (1 billable, 2 non-billable)
C4A.10Merkel cell carcinoma of unspecified eyelid, including canthusC4A.11Merkel cell carcinoma of right eyelid, including canthushas subcodesC4A.12Merkel cell carcinoma of left eyelid, including canthushas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 2: Neoplasms (C00-D49).

Clinical Hierarchy

BillableHas subcodes
CH2Neoplasms (C00-D49)
C43-C44Melanoma and other malignant neoplasms of skin (C43-C44)
C4AMerkel cell carcinoma
C4A.1Merkel cell carcinoma of eyelid, including canthusNot billable
C4A.10Merkel cell carcinoma of unspecified eyelid, including canthusBillable
C4A.11Merkel cell carcinoma of right eyelid, including canthusSubcodes
C4A.12Merkel cell carcinoma of left eyelid, including canthusSubcodes

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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