Is Z29 a billable ICD-10-CM code?

No. Z29 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z29 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 communicable diseases (Z20-Z29).

What cannot be coded together with Z29?

Z29 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Z29

Z29 — Encounter for other prophylactic measures

Non-billable headerICD-10-CM

Z29 is a non-billable header ICD-10-CM code for encounter for other prophylactic measures. 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.

desensitization to allergens (Z51.6)
prophylactic surgery (Z40.-)

Risk adjustment

Z29 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 Z29

4 child codes. Green means billable.

Questions about Z29

Is Z29 a billable ICD-10-CM code?: No. Z29 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z29 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 communicable diseases (Z20-Z29).
What cannot be coded together with Z29?: Z29 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.