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Z59.02 ICD-10-CM Code: Unsheltered homelessness

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Unsheltered homelessness is a billable ICD-10-CM diagnosis code (Z59.02).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for Z59.02 in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Lives in a homeless encampment
  • Residing in place not meant for human habitation such as: abandoned buildings, cars, parks, sidewalk
  • Residing on the street

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Indexed Clinical Terms (6)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Homelessness, unsheltered
  • Lack of, shelter
  • Lives in a homeless encampment
  • Person (with), living (in), without, shelter
  • Residing, in place not meant for human habitation (abandoned building) (car) (park) (sidewalk)
  • Residing, on the street

Frequently Compared Codes

The official Excludes notes on Z59.02 name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

  • FY2022 — 2021-10-01
    Added to the code set
    Unsheltered homelessness
    FY2022 changes

Verify Before Coding

  • Principal-diagnosis restriction. The Medicare Code Editor lists this code as unacceptable as a principal diagnosis: it describes a circumstance influencing health status rather than a current illness or injury being treated. It is valid as a secondary diagnosis.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Relationships & Classification

Other codes that name Z59.02 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

1 Excludes1 notes: Z76.4 (via Z59.0.-).

2 Excludes2 notes: Z56 (via Z59.-), Z62 (via Z59.-).

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 1 MS-DRG: DRG 951 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):FAC019 — Socioeconomic/psychosocial factors.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Socioeconomic/psychosocial factors).

Z57.6 — Occupational exposure to extreme temperature, Z57.7 — Occupational exposure to vibration, Z57.8 — Occupational exposure to other risk factors, Z57.9 — Occupational exposure to unspecified risk factor, Z58.6 — Inadequate drinking-water supply, Z58.81 — Basic services unavailable in physical environment, Z58.89 — Other problems related to physical environment, Z59.0 — Homelessness, Z59.00 — Homelessness unspecified, Z59.01 — Sheltered homelessness, Z59.1 — Inadequate housing, Z59.10 — Inadequate housing, unspecified, Z59.11 — Inadequate housing environmental temperature, Z59.12 — Inadequate housing utilities, Z59.19 — Other inadequate housing, Z59.2 — Discord with neighbors, lodgers and landlord, Z59.3 — Problems related to living in residential institution, Z59.4 — Lack of adequate food, Z59.41 — Food insecurity, Z59.48 — Other specified lack of adequate food, +102 more

Contextual Map

Every relationship of Z59.02 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • Z00-Z99 — Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99) (Z00-Z99) [Hierarchy]
  • Z55-Z65 — Persons with potential health hazards related to socioeconomic and psychosocial circumstances [Hierarchy]

Referenced by Excludes1 notes

  • Z76.4 — Other boarder to healthcare facility [Excludes1](via Z59.0.-): “homelessness (Z59.0-)” · check together

Referenced by Excludes2 notes

  • Z56 — Problems related to employment and unemployment [Excludes2](via Z59.-): “problems related to housing and economic circumstances (Z59.-)” · check together
  • Z62 — Problems related to upbringing [Excludes2](via Z59.-): “problems related to housing and economic circumstances (Z59.-)” · check together

Clinical classification (CCSR)

  • FAC019 — Socioeconomic/psychosocial factors [CCSR]

Potential MS-DRG

  • DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS [MS-DRG]: “OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)”

MDC crossing · procedures (1235)

  • MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services [MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • F003GKZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GMZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GPZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GYZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GZZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • and 1230 more

Index entries

  • Homelessness, unsheltered[Index term]
  • Lack of, shelter[Index term]
  • Lives in a homeless encampment[Index term]
  • Person (with), living (in), without, shelter[Index term]
  • Residing, in place not meant for human habitation (abandoned building) (car) (park) (sidewalk)[Index term]
  • Residing, on the street[Index term]

Nearest codes (32)

  • Z59 — Problems related to housing and economic circumstances [Sibling]
  • Z59.0 — Homelessness [Sibling]
  • Z59.00 — Homelessness unspecified [Sibling]
  • Z59.01 — Sheltered homelessness [Sibling]
  • Z59.1 — Inadequate housing [Sibling]
  • Z59.10 — Inadequate housing, unspecified [Sibling]
  • Z59.11 — Inadequate housing environmental temperature [Sibling]
  • Z59.12 — Inadequate housing utilities [Sibling]
  • and 24 more

Change history

  • FY2022 — Added to the code set [Change history]

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z59.02 in its code family, with their registry titles.

  • Z59 — Problems related to housing and economic circumstances
  • Z59.0 — Homelessness
  • Z59.00 — Homelessness unspecified
  • Z59.01 — Sheltered homelessness
  • Z59.1 — Inadequate housing
  • Z59.10 — Inadequate housing, unspecified
  • Z59.11 — Inadequate housing environmental temperature
  • Z59.12 — Inadequate housing utilities
  • Z59.19 — Other inadequate housing
  • Z59.2 — Discord with neighbors, lodgers and landlord

View all codes in the Z59 family