2024 ICD-10-CM Diagnosis Code C43.121

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Malignant melanoma of left upper eyelid, including canthus

  • C43.121 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 C43.121 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C43.121 – other international versions of ICD-10 C43.121 may differ.

The following code(s) above C43.121 contain annotation back-references

 that may be applicable to C43.121:

  • C00-D49  Neoplasms
  • C43  Malignant melanoma of skin

ICD-10-CM C43.121 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 124 Other disorders of the eye with mcc or thrombolytic agent
  • 125 Other disorders of the eye without mcc

Code History

  • 2019 (effective 10/1/2018): New code
  • 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