Is Z89.4 a billable ICD-10-CM code?

No. Z89.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z89.4 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 family and personal history and certain conditions influencing health status (Z77-Z99).

What cannot be coded together with Z89.4?

Z89.4 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 Z89.4 (Z89) and apply to it just the same.

Z89.4

Z89.4 — Acquired absence of toe(s), foot, and ankle

Non-billable headerICD-10-CM

Z89.4 is a non-billable header ICD-10-CM code for acquired absence of toe(s), foot, and ankle. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above Z89.4

These are not written on Z89.4, but they bind it: a note on a category applies to every code beneath it. Billing Z89.4 with anything listed here is a denial.

Written on Z89 — Acquired absence of limb

acquired deformities of limbs (M20-M21)
congenital absence of limbs (Q71-Q73)

Other codes that can never be billed with Z89.4

These codes carry an Excludes1 note pointing at Z89.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z89.4 alone.

M20Acquired deformities of fingers and toes
M21Other acquired deformities of limbs

Risk adjustment

Z89.4 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

Z89.4 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead Z89.4

4 child codes. Green means billable.

Related codes at this level

Codes that share Z89. If Z89.4 is not quite right, the correct code is usually one of these.

Questions about Z89.4

Is Z89.4 a billable ICD-10-CM code?: No. Z89.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z89.4 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 family and personal history and certain conditions influencing health status (Z77-Z99).
What cannot be coded together with Z89.4?: Z89.4 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 Z89.4 (Z89) and apply to it just the same.