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  2. ICD-10-CM Codes List
  3. C00–D49
  4. C43-C44
  5. Merkel cell carcinoma (C4A)

Merkel cell carcinoma (C4A)

Browse all the diagnosis codes used for merkel cell carcinoma (c4a). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

  • Neoplasms (C00–D49)

    • Melanoma and other malignant neoplasms of skin (C43-C44)

        • Merkel cell carcinoma (C4A)

        • C4A Merkel cell carcinoma
        • C4A.0 Merkel cell carcinoma of lip
        • C4A.1 Merkel cell carcinoma of eyelid, including canthus
        • C4A.10 Merkel cell carcinoma of unspecified eyelid, including canthus
        • C4A.11 Merkel cell carcinoma of right eyelid, including canthus
        • C4A.111 Merkel cell carcinoma of right upper eyelid, including canthus
        • C4A.112 Merkel cell carcinoma of right lower eyelid, including canthus
        • C4A.12 Merkel cell carcinoma of left eyelid, including canthus
        • C4A.121 Merkel cell carcinoma of left upper eyelid, including canthus
        • C4A.122 Merkel cell carcinoma of left lower eyelid, including canthus
        • C4A.2 Merkel cell carcinoma of ear and external auricular canal
        • C4A.20 Merkel cell carcinoma of unspecified ear and external auricular canal
        • C4A.21 Merkel cell carcinoma of right ear and external auricular canal
        • C4A.22 Merkel cell carcinoma of left ear and external auricular canal
        • C4A.3 Merkel cell carcinoma of other and unspecified parts of face
        • C4A.30 Merkel cell carcinoma of unspecified part of face
        • C4A.31 Merkel cell carcinoma of nose
        • C4A.39 Merkel cell carcinoma of other parts of face
        • C4A.4 Merkel cell carcinoma of scalp and neck
        • C4A.5 Merkel cell carcinoma of trunk
        • C4A.51 Merkel cell carcinoma of anal skin
        • C4A.52 Merkel cell carcinoma of skin of breast
        • C4A.59 Merkel cell carcinoma of other part of trunk
        • C4A.6 Merkel cell carcinoma of upper limb, including shoulder
        • C4A.60 Merkel cell carcinoma of unspecified upper limb, including shoulder
        • C4A.61 Merkel cell carcinoma of right upper limb, including shoulder
        • C4A.62 Merkel cell carcinoma of left upper limb, including shoulder
        • C4A.7 Merkel cell carcinoma of lower limb, including hip
        • C4A.70 Merkel cell carcinoma of unspecified lower limb, including hip
        • C4A.71 Merkel cell carcinoma of right lower limb, including hip
        • C4A.72 Merkel cell carcinoma of left lower limb, including hip
        • C4A.8 Merkel cell carcinoma of overlapping sites
        • C4A.9 Merkel cell carcinoma, unspecified