2026 ICD-10-CM Diagnosis Code Z90.5Acquired absence of kidney

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z90

ICD-10-CM Z90.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z90.5 is a billable ICD-10-CM diagnosis code for acquired absence of kidney. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as absent kidney. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acquired absence of limb or organ.

Code Identity

ICD-10-CM Code
Z90.5
Billable Status
Yes — Valid for Submission
Code Describes
Acquired absence of kidney
Short Description
Acquired absence of kidney
Same as the full description in the CMS dataset.
Parent Code
Z90
Acquired absence of organs, not elsewhere classified

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategoryZ90Acquired absence of organs, not elsewhere classified
This CodeZ90.5Acquired absence of kidney

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z90.5.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z90.5 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Absent kidney
  • Chronic kidney disease due to traumatic loss of kidney
  • H/O: kidney donation
  • History of nephrectomy
  • History of organ donation
  • History of partial nephrectomy
  • History of radical nephrectomy
  • Left kidney absent
  • Right kidney absent
  • Traumatic loss of kidney

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Absence(of) (organ or part) (complete or partial)
      • kidney (s) (acquired)
    • Status(post)
      • nephrectomy (unilateral) (bilateral)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC022
Acquired absence of limb or organ
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Kidney Diseases

You have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z90.5 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V45.73 Acquired absence kidney
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z90.5Overview

Is Z90.5 (Acquired absence of organs, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report acquired absence of kidney on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z90.5 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because acquired absence of kidney describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z90.5 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for acquired absence of kidney on inpatient claims.

What is the ICD-9 equivalent of Z90.5?

Under the General Equivalence Mappings, acquired absence of kidney converts to ICD-9-CM V45.73 (acquired absence kidney). The mapping is a direct match.