Category C4A

Merkel cell carcinoma

Clinical Classification Guidelines

Specific Diagnosis Codes

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