C4A.2 - Merkel cell carcinoma of ear and external auricular canal

  • Applicable to Merkel cell carcinoma of ear and external auricular canal
  • The 2025 edition of ICD10-CM C4A.2 became effective on October 1, 2024.
  • This is the American ICD10-CM version of C4A.2 - other international versions of ICD10 C4A.2 may differ.
  • C4A.2 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • C4A.2 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
  • C4A.2 - Merkel cell carcinoma of ear and external auricular canal
    • C4A.2 - Merkel cell carcinoma of ear and external auricular canal
    • C4A.20 - Merkel cell carcinoma of unspecified ear and external auricular canal
    • C4A.21 - Merkel cell carcinoma of right ear and external auricular canal
    • C4A.22 - Merkel cell carcinoma of left ear and external auricular canal

The following codes above C4A.2 contain annotation back-references that may be applicable to C4A.2:

Chapter: C00-D49 Neoplasms

Section: C43-C44 Melanoma and other malignant neoplasms of skin

Category: C4A Merkel cell carcinoma

auricular icd 10
 
carcinoma icd 10
 
merkel icd 10
 
canal icd 10
 
Non-Billable/Non-Specific Code

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