2021 ICD-10-CM Code C4A.122
Merkel cell carcinoma of left lower eyelid, including canthus
Valid for Submission
C4A.122 is a billable diagnosis code used to specify a medical diagnosis of merkel cell carcinoma of left lower eyelid, including canthus. The code C4A.122 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
| ICD-10: | C4A.122 |
| Short Description: | Merkel cell carcinoma of left lower eyelid, inc canthus |
| Long Description: | Merkel cell carcinoma of left lower eyelid, including canthus |
Code Classification
Diagnostic Related Groups - MS-DRG Mapping
The ICD-10 code C4A.122 is grouped in the following groups for version MS-DRG V38.0 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 10/01/2020 through 09/30/2021.
Replacement Code
C4A122 replaces the following previously assigned ICD-10 code(s):
- C4A.12 - Merkel cell carcinoma of left eyelid, including canthus
Information for Patients
Skin Cancer
Skin cancer is the most common form of cancer in the United States. The two most common types are basal cell cancer and squamous cell cancer. They usually form on the head, face, neck, hands, and arms. Another type of skin cancer, melanoma, is more dangerous but less common.
Anyone can get skin cancer, but it is more common in people who
- Spend a lot of time in the sun or have been sunburned
- Have light-colored skin, hair and eyes
- Have a family member with skin cancer
- Are over age 50
You should have your doctor check any suspicious skin markings and any changes in the way your skin looks. Treatment is more likely to work well when cancer is found early. If not treated, some types of skin cancer cells can spread to other tissues and organs. Treatments include surgery, radiation therapy, chemotherapy, photodynamic therapy (PDT), and biologic therapy. PDT uses a drug and a type of laser light to kill cancer cells. Biologic therapy boosts your body's own ability to fight cancer.
NIH: National Cancer Institute
- Basal cell carcinoma (Medical Encyclopedia)
- Mohs micrographic surgery (Medical Encyclopedia)
- Skin lesion biopsy (Medical Encyclopedia)
- Skin self-exam (Medical Encyclopedia)
- Squamous cell skin cancer (Medical Encyclopedia)
[Learn More]
Code History
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019