C4A — ICD-10-CM Diagnosis Codes

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