Z90.5 — Acquired absence of kidney
Z90.5 is a billable, specific ICD-10-CM code for acquired absence of kidney. It is valid for submission on a claim.
Risk adjustment
Z90.5 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.
Medicare coverage
Z90.5 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
How Z90.5 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 Z90.5.
- Absence›kidney(s) (acquired)
- Status›nephrectomy(unilateral) (bilateral)
Related codes at this level
Codes that share Z90. If Z90.5 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
- Z90.6Acquired absence of other parts of urinary tract
- Z90.7Acquired absence of genital organ(s)
- Z90.8Acquired absence of other organs
Questions about Z90.5
- Is Z90.5 a billable ICD-10-CM code?
- Yes. Z90.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Z90.5 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).