Is Z44 a billable ICD-10-CM code?

No. Z44 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z44 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?

Z44 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Z44

Z44 — Encounter for fitting and adjustment of external prosthetic device

Non-billable headerICD-10-CM

Z44 is a non-billable header ICD-10-CM code for encounter for fitting and adjustment of external prosthetic device. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Includes

Conditions this code covers.

removal or replacement of external prosthetic device

Other codes that can never be billed with Z44

These codes carry an Excludes1 note pointing at Z44. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z44 alone.

Z09Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

Risk adjustment

Z44 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.

Code to one of these instead Z44

6 child codes. Green means billable.

Questions about Z44

Is Z44 a billable ICD-10-CM code?: No. Z44 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z44 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?: Z44 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.