All ICD10 Codes

C4A.12

Non-Billable
ChapterC00–D49
Ranksubcategory
Official Description

Merkel cell carcinoma of left eyelid, including canthus

Use a more specific code (2 billable)
C4A.121Merkel cell carcinoma of left upper eyelid, including canthusC4A.122Merkel cell carcinoma of left lower eyelid, including canthus
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 canthus
C4A.12Merkel cell carcinoma of left eyelid, including canthusNot billable
C4A.121Merkel cell carcinoma of left upper eyelid, including canthusBillable
C4A.122Merkel cell carcinoma of left lower eyelid, including canthusBillable

Code History

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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