Z90.09 — Acquired absence of other part of head and neck
Z90.09 is a billable, specific ICD-10-CM code for acquired absence of other part of head and neck. It is valid for submission on a claim.
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.
- teeth (K08.1)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Acquired absence of nose
Risk adjustment
Z90.09 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.
How Z90.09 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Z90.09.
- Absence›head, part NEC(acquired)
- Absence›nose›acquired
Related codes at this level
Codes that share Z90.0. If Z90.09 is not quite right, the correct code is usually one of these.
Questions about Z90.09
- Is Z90.09 a billable ICD-10-CM code?
- Yes. Z90.09 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Z90.09 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).