2024 ICD-10-CM Diagnosis Code C4A.51

by

Merkel cell carcinoma of anal skin

  • C4A.51 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM C4A.51 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C4A.51 – other international versions of ICD-10 C4A.51 may differ.

Applicable To

  • Merkel cell carcinoma of anal margin
  • Merkel cell carcinoma of perianal skin

The following code(s) above C4A.51 contain annotation back-references

 that may be applicable to C4A.51:

  • C00-D49  Neoplasms
  • C4A.5  Merkel cell carcinoma of trunk

Approximate Synonyms

  • Merkel cell carcinoma of perianal skin
  • Merkel cell carcinoma, perianal skin

ICD-10-CM C4A.51 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 595 Major skin disorders with mcc
  • 596 Major skin disorders without mcc

Convert C4A.51 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to C4A.51: