2026 ICD-10-CM Diagnosis Code Z65.5Exposure to disaster, war and other hostilities

ICD-10-CM Codes›Z00–Z99›Z55-Z65›Z65

ICD-10-CM Z65.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z65.5 is a billable ICD-10-CM diagnosis code for exposure to disaster, war and other hostilities. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Socioeconomic/psychosocial factors.

Code Identity

ICD-10-CM Code
Z65.5
Billable Status
Yes — Valid for Submission
Code Describes
Exposure to disaster, war and other hostilities
Short Description
Exposure to disaster, war and other hostilities
Same as the full description in the CMS dataset.
Parent Code
Z65
Problems related to other psychosocial circumstances

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ55-Z65Persons with potential health hazards related to socioeconomic and psychosocial circumstances
CategoryZ65Problems related to other psychosocial circumstances
This CodeZ65.5Exposure to disaster, war and other hostilities

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z65.5.

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

Z65.5 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.

  • Exposure to combat
  • Operations of war
  • Prisoner of war
  • Prisoner of war in Germany
  • Prisoner of war in Japan
  • Saw war service
  • Victim of aerial warfare
  • Victim of armed conflict
  • Victim of civil insurrection
  • Victim of civil warfare
  • Victim of guerrilla warfare
  • Victim of international warfare
  • Victim of land warfare
  • Victim of military action
  • Victim of naval warfare
  • Victim of peacekeeping action

Tabular List NotesGuidance

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

Type 1 Excludes

  • target of perceived discrimination or persecution Z60.5

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.

    • Exposure(to)
      • disaster
    • Exposure(to)
      • war
    • Victim(of)
      • disaster
    • Victim(of)
      • war

Clinical ClassificationClinical

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

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

Convert Z65.5 to ICD-9-CMHistory

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

ICD-9-CM
V62.22 Hx retrn military deploy
Approximate The match is approximate rather than exact.

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 Z65.5Overview

Is Z65.5 (Problems related to other psychosocial circumstances) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report exposure to disaster, war and other hostilities on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z65.5 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because exposure to disaster, war and other hostilities describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z65.5 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 exposure to disaster, war and other hostilities on inpatient claims.

What is the ICD-9 equivalent of Z65.5?

Under the General Equivalence Mappings, exposure to disaster, war and other hostilities converts to ICD-9-CM V62.22 (hx retrn military deploy). The mapping is approximate, so confirm the match fits the documentation.