Melanoma and other malignant neoplasms of skin (C43-C44)
C4A: Merkel cell carcinoma
C4A.0: Merkel cell carcinoma of lip
C4A.1: Merkel cell carcinoma of eyelid, including canthus
C4A.2: Merkel cell carcinoma of ear and external auricular canal
C4A.3: Merkel cell carcinoma of other and unspecified parts of face
C4A.4: Merkel cell carcinoma of scalp and neck
C4A.5: Merkel cell carcinoma of trunk
C4A.6: Merkel cell carcinoma of upper limb, including shoulder
C4A.7: Merkel cell carcinoma of lower limb, including hip
C4A.8: Merkel cell carcinoma of overlapping sites
C4A.9: Merkel cell carcinoma, unspecified
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