2026 ICD-10-CM Diagnosis Code Z59.71Insufficient health insurance coverage

ICD-10-CM Codes›Z00–Z99›Z55-Z65›Z59

ICD-10-CM Z59.71
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z59.71 is a billable ICD-10-CM diagnosis code for insufficient health insurance coverage. 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 finding related to health insurance issues. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Socioeconomic/psychosocial factors.

Code Identity

ICD-10-CM Code
Z59.71
Billable Status
Yes — Valid for Submission
Code Describes
Insufficient health insurance coverage
Short Description
Insufficient health insurance coverage
Same as the full description in the CMS dataset.
Parent Code
Z59.7
Insufficient social insurance and welfare support

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 CodeZ59.71Insufficient health insurance coverage

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z59.71.

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

Z59.71 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.

  • Finding related to health insurance issues
  • Insurance refused - medical reasons
  • Medication not covered by insurance
  • Uninsured medical expenses

Tabular List NotesGuidance

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

Inclusion Terms

  • Inadequate social insurance
  • Insufficient social insurance
  • No health insurance coverage

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.

    • Inadequate, inadequacy
      • social
        • insurance
    • Insufficiency, insufficient
      • health insurance coverage
    • Insufficiency, insufficient
      • social insurance
    • No
      • health insurance coverage

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 Z59.71 replaces the following previously assigned code(s):

  • Z59.7 - Insufficient social insurance and welfare support
FY 2025AddedAdded to the ICD-10-CM code setEffective October 1, 2024.
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z59.71Overview

Is Z59.71 (Insufficient social insurance and welfare support) a billable code?

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

Can Z59.71 be a principal diagnosis?

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

Is Z59.71 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 insufficient health insurance coverage on inpatient claims.