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C4A.4 - Merkel cell carcinoma of scalp and neck


The ICD 10 Code for Merkel cell carcinoma of scalp and neck is listed as C4A.4.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: C4A.4
Description: Merkel cell carcinoma of scalp and neck
Diagnostic Related Groups
(MS-DRG v30.0)
595 - Major Skin Disorders W Mcc
596 - Major Skin Disorders W/o Mcc
Chapter Neoplasms (C00-D49)
Parent C4A - Merkel cell carcinoma
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 209.32 - Merkel cell carcinoma of the scalp and neck
ICD-10-CM Siblings (same level / similar specificity) of C4A.4:
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.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