Z90.8 — Acquired absence of other organs
Z90.8 is a non-billable header ICD-10-CM code for acquired absence of other organs. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 inherited from the categories above Z90.8
These are not written on Z90.8, but they bind it: a note on a category applies to every code beneath it. Billing Z90.8 with anything listed here is a denial.
Written on Z90 — Acquired absence of organs, not elsewhere classified
- congenital absence - see Alphabetical Index
Excludes2 inherited from the categories above Z90.8
Also inherited, and the opposite of Excludes1: these conditions are not part of Z90.8, but a patient can have both, so you may code both.
Other codes that can never be billed with Z90.8
These codes carry an Excludes1 note pointing at Z90.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z90.8 alone.
- D73.0Hyposplenism
Risk adjustment
Z90.8 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
Z90.8 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 Z90.8
2 child codes. Green means billable.
Related codes at this level
Codes that share Z90. If Z90.8 is not quite right, the correct code is usually one of these.
- Z90.0Acquired absence of part of head and neck
- Z90.1Acquired absence of breast and nipple
- Z90.2Acquired absence of lung [part of]
- Z90.3Acquired absence of stomach [part of]
- Z90.4Acquired absence of other specified parts of digestive tract
- Z90.5Acquired absence of kidney
- Z90.6Acquired absence of other parts of urinary tract
- Z90.7Acquired absence of genital organ(s)
Questions about Z90.8
- Is Z90.8 a billable ICD-10-CM code?
- No. Z90.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does Z90.8 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 Z90.8?
- Z90.8 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 Z90.8 (Z90) and apply to it just the same.