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C4A.51 - Merkel cell carcinoma of anal skin


The ICD 10 Code for Merkel cell carcinoma of anal skin is listed as C4A.51.
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.51
Description: Merkel cell carcinoma of anal skin
  • Merkel cell carcinoma of anal margin
  • Merkel cell carcinoma of perianal skin
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.5 - Merkel cell carcinoma of trunk
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 209.35 - Merkel cell carcinoma of the trunk (approximate)
ICD-10-CM Siblings (same level / similar specificity) of C4A.51:
C4A.52 - Merkel cell carcinoma of skin of breast
C4A.59 - Merkel cell carcinoma of other part of trunk