2026 ICD-10-CM Diagnosis Code Z62.891Sibling rivalry

ICD-10-CM Codes›Z00–Z99›Z55-Z65›Z62

ICD-10-CM Z62.891
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z62.891 is a billable ICD-10-CM diagnosis code for sibling rivalry. 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
Z62.891
Billable Status
Yes — Valid for Submission
Code Describes
Sibling rivalry
Short Description
Sibling rivalry
Same as the full description in the CMS dataset.
Parent Code
Z62.89
Other specified problems related to upbringing

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ55-Z65Persons with potential health hazards related to socioeconomic and psychosocial circumstances
CategoryZ62Problems related to upbringing
This CodeZ62.891Sibling rivalry

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z62.891.

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

Z62.891 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

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.

    • Rivalry, sibling
    • Sibling rivalry

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

Family Issues

There are many kinds of families. Some have two parents, while others have a single parent. Sometimes there is no parent and grandparents raise grandchildren. Some children live in foster families, adoptive families, or in stepfamilies.

Read the full article at MedlinePlus

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

Convert Z62.891 to ICD-9-CMHistory

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

ICD-9-CM
V61.8 Family circumstances NEC
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 Z62.891Overview

Is Z62.891 (Other specified problems related to upbringing) a billable code?

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

Can Z62.891 be a principal diagnosis?

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

Is Z62.891 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 sibling rivalry on inpatient claims.

What is the ICD-9 equivalent of Z62.891?

Under the General Equivalence Mappings, sibling rivalry converts to ICD-9-CM V61.8 (family circumstances NEC). The mapping is approximate, so confirm the match fits the documentation.