Is Z40.8 a billable ICD-10-CM code?

No. Z40.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z40.8 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 Z40.8?

Z40.8 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 Z40.8 (Z40) and apply to it just the same.

Z40.8

Z40.8 — Encounter for other prophylactic surgery

Non-billable headerICD-10-CM

Z40.8 is a non-billable header ICD-10-CM code for encounter for other prophylactic surgery. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above Z40.8

These are not written on Z40.8, but they bind it: a note on a category applies to every code beneath it. Billing Z40.8 with anything listed here is a denial.

Written on Z40 — Encounter for prophylactic surgery

organ donations (Z52.-)
therapeutic organ removal-code to condition

Other codes that can never be billed with Z40.8

These codes carry an Excludes1 note pointing at Z40.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z40.8 alone.

Z29Encounter for other prophylactic measures

Risk adjustment

Z40.8 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 history

What changed, and when. Derived by diffing consecutive CMS release files — which matters when you are defending a code assigned under an earlier edition.

deletedFY2024-FY2026
Encounter for other prophylactic surgery

Code to one of these instead Z40.8

3 child codes. Green means billable.

Related codes at this level

Codes that share Z40. If Z40.8 is not quite right, the correct code is usually one of these.

Questions about Z40.8

Is Z40.8 a billable ICD-10-CM code?: No. Z40.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z40.8 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 Z40.8?: Z40.8 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 Z40.8 (Z40) and apply to it just the same.