Z89.442
Z89.442 — Acquired absence of left ankle
Billable / specific codeICD-10-CMPOA exemptleft
Z89.442 is a billable, specific ICD-10-CM code for acquired absence of left ankle. It is valid for submission on a claim.
Risk adjustment
Z89.442 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 409 Amputation Status, Lower Limb/Amputation Complications0.598 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
Z89.442 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- 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 Z89.44. If Z89.442 is not quite right, the correct code is usually one of these.
Questions about Z89.442
- Is Z89.442 a billable ICD-10-CM code?
- Yes. Z89.442 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Z89.442 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).