Z85.821 — Personal history of Merkel cell carcinoma
Z85.821 is a billable, specific ICD-10-CM code for personal history of merkel cell carcinoma. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Conditions classifiable to C4A
Risk adjustment
Z85.821 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
Z85.821 is named in 17 Medicare coverage policies — 17 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52479Oral Anticancer Drugs - Policy Article
- A52479Oral Anticancer Drugs - Policy Article
- A52479Oral Anticancer Drugs - Policy Article
- A54768Billing and Coding: Cardiac Blood Pool Imaging (Multiple Gated Acquisition Scanning- MUGA, Ventriculography) When Performed in Conjunction with Cardiotoxic Chemotherapy
How Z85.821 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Z85.821.
- History›personal›Merkel cell carcinoma(skin)
- History›personal›malignant neoplasm›Merkel cell
- History›personal›malignant neoplasm›skin NEC›Merkel cell
Related codes at this level
Codes that share Z85.82. If Z85.821 is not quite right, the correct code is usually one of these.
Questions about Z85.821
- Is Z85.821 a billable ICD-10-CM code?
- Yes. Z85.821 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Z85.821 sit in the tabular list?
- Factors influencing health status and contact with health services (Z00-Z99), in the block Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).