Is Z45 a billable ICD-10-CM code?

No. Z45 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z45 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 Z45?

Z45 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Z45

Z45 — Encounter for adjustment and management of implanted device

Non-billable headerICD-10-CM

Z45 is a non-billable header ICD-10-CM code for encounter for adjustment and management of implanted 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

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

encounter for fitting and adjustment of non-implanted device (Z46.-)

Includes

Conditions this code covers.

removal or replacement of implanted device

Other codes that can never be billed with Z45

These codes carry an Excludes1 note pointing at Z45. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z45 alone.

Z44.3Encounter for fitting and adjustment of external breast prosthesis
Z45.01Encounter for adjustment and management of cardiac pacemaker
Z46.1Encounter for fitting and adjustment of hearing aid
Z95.0Presence of cardiac pacemaker

Risk adjustment

Z45 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 Z45

7 child codes. Green means billable.

Questions about Z45

Is Z45 a billable ICD-10-CM code?: No. Z45 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z45 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 Z45?: Z45 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.