2026 ICD-10-CM Diagnosis Code Z31.438Encounter for other genetic testing of female for procreative management

ICD-10-CM Codes›Z00–Z99›Z30-Z39›Z31

ICD-10-CM Z31.438
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z31.438 is a billable ICD-10-CM diagnosis code for encounter for other genetic testing of female for procreative management. 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 Contraceptive and procreative management.

Code Identity

ICD-10-CM Code
Z31.438
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for other genetic testing of female for procreative management
Short Description
Encounter for oth genetic testing of female for pro mgmt
Parent Code
Z31.43
Encounter for genetic testing of female for procreative management

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ30-Z39Persons encountering health services in circumstances related to reproduction
CategoryZ31Encounter for procreative management
This CodeZ31.438Encounter for other genetic testing of female for procreative management

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z31.438.

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

Z31.438 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.

    • Test, tests, testing(for)
      • genetic
        • procreative management NEC
          • female

Clinical ClassificationClinical

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

CCSR FAC013
Contraceptive and procreative management
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Genetic Testing

Genetic testing is a type of medical test that looks for changes, sometimes called variants or mutations, in your DNA. DNA contains the genetic instructions in all living things. Often, these changes have no effect, but sometimes, even a small change in DNA can cause disease or other health conditions.

The full article covers:

  • What is genetic testing?
  • What are the different ways to get genetic tests?
  • Why is genetic testing done?
  • How is genetic testing done?
  • What are the benefits of genetic testing?
  • What are the drawbacks of genetic testing?
  • How do I decide whether to be tested?

Read the full article at MedlinePlus

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

Convert Z31.438 to ICD-9-CMHistory

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

ICD-9-CM
V26.32 Female genetic test 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 Z31.438Overview

Is Z31.438 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for other genetic testing of female for procreative management on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z31.438 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because encounter for other genetic testing of female for procreative management describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z31.438 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 encounter for other genetic testing of female for procreative management on inpatient claims.

What is the ICD-9 equivalent of Z31.438?

Under the General Equivalence Mappings, encounter for other genetic testing of female for procreative management converts to ICD-9-CM V26.32 (female genetic test NEC). The mapping is approximate, so confirm the match fits the documentation.