MCMCB Pro
Z89.121

Z89.121Acquired absence of right wrist

Billable / specific codeICD-10-CMPOA exemptright

Z89.121 is a billable, specific ICD-10-CM code for acquired absence of right wrist. It is valid for submission on a claim.

Risk adjustment

Z89.121 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

Z89.121 is named in 4 Medicare coverage policies 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53058Billing and Coding: Home Health Physical Therapy
  • A53065Billing and Coding: Outpatient Physical Therapy
  • A57311Billing and Coding: Physical Therapy - Home Health

Related codes at this level

Codes that share Z89.12. If Z89.121 is not quite right, the correct code is usually one of these.

Questions about Z89.121

Is Z89.121 a billable ICD-10-CM code?
Yes. Z89.121 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z89.121 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).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.