ICD-10-CM Code C43.121

Malignant melanoma of left upper eyelid, including canthus

Version 2020 Billable Code

Valid for Submission

C43.121 is a billable code used to specify a medical diagnosis of malignant melanoma of left upper eyelid, including canthus. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:C43.121
Short Description:Malignant melanoma of left upper eyelid, including canthus
Long Description:Malignant melanoma of left upper eyelid, including canthus

Diagnostic Related Groups

The ICD-10 code C43.121 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 124 - OTHER DISORDERS OF THE EYE WITH MCC
  • 125 - OTHER DISORDERS OF THE EYE WITHOUT MCC

Replacement Code

C43121 replaces the following previously assigned ICD-10 code(s):

  • C43.12 - Malignant melanoma of left eyelid, including canthus

Code Classification

  • Neoplasms (C00–D48)
    • Melanoma and other malignant neoplasms of skin (C43-C44)
      • Malignant melanoma of skin (C43)

Code History

  • FY 2019 - Code Added, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Eyelid Disorders

Your eyelids help protect your eyes. When you blink, your eyelids spread moisture over your eyes. Blinking also helps move dirt or other particles off the surface of the eye. You close your eyelids when you see something coming toward your eyes. This can help protect against injuries.

Like most other parts of your body, your eyelids can get infected, inflamed, or even develop cancer. There are also specific eyelid problems, including

  • Eyelids that turn in or out
  • Eyelids that droop
  • Abnormal blinking or twitching

Treatment of eyelid problems depends on the cause.


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Melanoma

Melanoma is the most serious type of skin cancer. Often the first sign of melanoma is a change in the size, shape, color, or feel of a mole. Most melanomas have a black or black-blue area. Melanoma may also appear as a new mole. It may be black, abnormal, or "ugly looking."

Thinking of "ABCDE" can help you remember what to watch for:

  • Asymmetry - the shape of one half does not match the other
  • Border - the edges are ragged, blurred or irregular
  • Color - the color is uneven and may include shades of black, brown and tan
  • Diameter - there is a change in size, usually an increase
  • Evolving - the mole has changed over the past few weeks or months

Surgery is the first treatment of all stages of melanoma. Other treatments include chemotherapy and radiation, biologic, and targeted therapies. Biologic therapy boosts your body's own ability to fight cancer. Targeted therapy uses substances that attack cancer cells without harming normal cells.

NIH: National Cancer Institute


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