2026 ICD-10-CM Diagnosis Code Z59.01Sheltered homelessness

ICD-10-CM Codes›Z00–Z99›Z55-Z65›Z59

ICD-10-CM Z59.01
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z59.01 is a billable ICD-10-CM diagnosis code for sheltered homelessness. 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 homelessness, living in a shared accommodation. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Socioeconomic/psychosocial factors.

Code Identity

ICD-10-CM Code
Z59.01
Billable Status
Yes — Valid for Submission
Code Describes
Sheltered homelessness
Short Description
Sheltered homelessness
Same as the full description in the CMS dataset.
Parent Code
Z59.0
Homelessness

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ55-Z65Persons with potential health hazards related to socioeconomic and psychosocial circumstances
CategoryZ59Problems related to housing and economic circumstances
This CodeZ59.01Sheltered homelessness

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z59.01.

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

Z59.01 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.

  • Homelessness, living in a shared accommodation
  • Lives in squat
  • Living in refuge
  • Sheltered homelessness
  • Sleeping at friends home
  • Sleeping in night shelter
  • Temporary shelter arrangements - finding

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Doubled up
  • Living in a shelter such as: motel, scattered site housing, temporary or transitional living situation

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.

    • Doubled up
    • Homelessness
      • sheltered
    • Living in a shelter(motel) (scattered site housing) (temporary or transitional living situation)

Clinical ClassificationClinical

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

CCSR FAC019
Socioeconomic/psychosocial factors
Default principal diagnosis: inpatient No · outpatient No

Code History & ChangesHistory

Replacement Z59.01 replaces the following previously assigned code(s):

  • Z59.0 - Homelessness
FY 2022AddedAdded to the ICD-10-CM code setEffective October 1, 2021.
FY 2023–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z59.01Overview

Is Z59.01 (Homelessness) a billable code?

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

Can Z59.01 be a principal diagnosis?

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

Is Z59.01 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 sheltered homelessness on inpatient claims.