Not Valid for Submission
C4A is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of merkel cell carcinoma. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.
Specific Coding for Merkel cell carcinoma
- CARCINOMA MERKEL CELL-. a carcinoma arising from merkel cells located in the basal layer of the epidermis and occurring most commonly as a primary neuroendocrine carcinoma of the skin. merkel cells are tactile cells of neuroectodermal origin and histologically show neurosecretory granules. the skin of the head and neck are a common site of merkel cell carcinoma occurring generally in elderly patients. holland et al. cancer medicine 3d ed p1245
Information for Patients
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)