Is Z44.109 a billable ICD-10-CM code?

Yes. Z44.109 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Z44.109 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Encounters for other specific health care (Z40-Z53).

What cannot be coded together with Z44.109?

Z44.109 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z44.109 (Z44) and apply to it just the same.

Z44.109

Z44.109 — Encounter for fitting and adjustment of unspecified artificial leg, unspecified leg

Billable / specific codeICD-10-CMPOA exemptunspecified

Z44.109 is a billable, specific ICD-10-CM code for encounter for fitting and adjustment of unspecified artificial leg, unspecified leg. It is valid for submission on a claim.

Excludes1 inherited from the categories above Z44.109

These are not written on Z44.109, but they bind it: a note on a category applies to every code beneath it. Billing Z44.109 with anything listed here is a denial.

Written on Z44 — Encounter for fitting and adjustment of external prosthetic device

malfunction or other complications of device - see Alphabetical Index
presence of prosthetic device (Z97.-)

Risk adjustment

Z44.109 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

Z44.109 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A53064Billing and Coding: Outpatient Occupational Therapy

Code history

Z44.109 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share Z44.10. If Z44.109 is not quite right, the correct code is usually one of these.

Questions about Z44.109

Is Z44.109 a billable ICD-10-CM code?: Yes. Z44.109 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z44.109 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Encounters for other specific health care (Z40-Z53).
What cannot be coded together with Z44.109?: Z44.109 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z44.109 (Z44) and apply to it just the same.