Is Z00 a billable ICD-10-CM code?

No. Z00 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z00 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).

What cannot be coded together with Z00?

Z00 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Z00

Z00 — Encounter for general examination without complaint, suspected or reported diagnosis

Non-billable headerICD-10-CM

Z00 is a non-billable header ICD-10-CM code for encounter for general examination without complaint, suspected or reported diagnosis. 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.

encounter for examination for administrative purposes (Z02.-)

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 pre-procedural examinations (Z01.81-)
special screening examinations (Z11-Z13)

Other codes that can never be billed with Z00

These codes carry an Excludes1 note pointing at Z00. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z00 alone.

Z52Donors of organs and tissues
Z00.0Encounter for general adult medical examination
Z00.11Newborn health examination
Z00.12Encounter for routine child health examination
Z02.7Encounter for issue of medical certificate

Risk adjustment

Z00 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 Z00

8 child codes. Green means billable.

Questions about Z00

Is Z00 a billable ICD-10-CM code?: No. Z00 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z00 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).
What cannot be coded together with Z00?: Z00 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.