2026 ICD-10-CM Diagnosis Code Z56.5Uncongenial work environment

ICD-10-CM Codes›Z00–Z99›Z55-Z65›Z56

ICD-10-CM Z56.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z56.5 is a billable ICD-10-CM diagnosis code for uncongenial work environment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 951. 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
Z56.5
Billable Status
Yes — Valid for Submission
Code Describes
Uncongenial work environment
Short Description
Uncongenial work environment
Same as the full description in the CMS dataset.
Parent Code
Z56
Problems related to employment and unemployment

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ55-Z65Persons with potential health hazards related to socioeconomic and psychosocial circumstances
CategoryZ56Problems related to employment and unemployment
This CodeZ56.5Uncongenial work environment

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z56.5.

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

Z56.5 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Employment problem
  • Inadequate canteen at work
  • Inadequate drinking water facilities at work
  • Inadequate handwashing facilities at work
  • Inadequate rest area at work
  • Inadequate shower facilities at work
  • Inadequate toilet facilities at work
  • Inadequate vending machine at work
  • Inadequate workplace welfare facility
  • No canteen at work
  • No drinking water available at work
  • No handwashing facilities at work
  • No rest area at work
  • No shower facilities at work
  • No toilet facilities at work
  • No vending machine at work
  • No workplace welfare facility
  • Occupational environmental problem
  • Uncongenial work environment
  • Workplace canteen facilities - finding
  • Workplace drinking water availability - finding
  • Workplace handwashing facilities - finding
  • Workplace rest area facilities - finding
  • Workplace shower facilities - finding
  • Workplace toilet facilities - finding
  • Workplace vending machine facilities - finding
  • Workplace welfare facility - finding

Tabular List NotesGuidance

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

Inclusion Terms

  • Difficult conditions at work

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

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

Patient EducationClinical

Occupational Health

Occupational health problems occur at work or because of the kind of work you do. These problems can include:

Read the full article at MedlinePlus

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

Convert Z56.5 to ICD-9-CMHistory

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

ICD-9-CM
V62.1 Adverse eff-work environ
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 Z56.5Overview

What is the ICD-10 code for uncongenial work environment?

The ICD-10-CM code for uncongenial work environment is Z56.5 (sometimes written as Z565). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is Z56.5 (Problems related to employment and unemployment) a billable code?

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

What MS-DRG does Z56.5 group to?

On inpatient claims, uncongenial work environment maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.556. Higher weights mean higher Medicare reimbursement.

Can Z56.5 be a principal diagnosis?

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

Is Z56.5 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 uncongenial work environment on inpatient claims. The code appears in the Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65) range of the CMS exempt list.