ICD-10-CM 2027
ICD-10 code for homelessness
From the official ICD-10-CM alphabetic index entry “Homelessness”. Page updated September 29, 2026.
About coding homelessness
The ICD-10-CM code for homelessness is Z59.00 (Homelessness unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z59.00.
Within Z59.0, choose Z59.00 (unspecified) only when documentation doesn't support a more specific option: Sheltered homelessness (Z59.01) and Unsheltered homelessness (Z59.02).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific homelessness codes (official index)
Common questions about homelessness ICD-10 codes
What is the ICD-10 code for homelessness?
- Z59.00 — Homelessness unspecified. More specific codes apply when the documentation supports them: Z59.01, Z59.02.
What is the ICD-10 code for sheltered homelessness?
- Z59.01 — Sheltered homelessness.
What is the ICD-10 code for unsheltered homelessness?
- Z59.02 — Unsheltered homelessness.
Is Z59.00 billable?
- Yes. Z59.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z59.00 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z59.00 a CC or MCC?
- No. Z59.00 is neither a CC nor an MCC under MS-DRG v44.0.