C4A

Non-Billable

Merkel cell carcinoma

C4A should not be used for reimbursement purposes as there are multiple sub-diagnoses that fall under this code. Please refer to the sub-diagnoses below.

Related Diagnoses

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