2026 ICD-10-CM Diagnosis Code Z15.04Genetic susceptibility to malignant neoplasm of endometrium

ICD-10-CM Codes›Z00–Z99›Z14-Z15›Z15

ICD-10-CM Z15.04
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z15.04 is a billable ICD-10-CM diagnosis code for genetic susceptibility to malignant neoplasm of endometrium. 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 endometrial cancer genetic marker of susceptibility positive. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Genetic susceptibility to disease.

Code Identity

ICD-10-CM Code
Z15.04
Billable Status
Yes — Valid for Submission
Code Describes
Genetic susceptibility to malignant neoplasm of endometrium
Short Description
Genetic susceptibility to malignant neoplasm of endometrium
Same as the full description in the CMS dataset.
Parent Code
Z15.0
Genetic susceptibility to malignant neoplasm

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ14-Z15Genetic carrier and genetic susceptibility to disease
CategoryZ15Genetic susceptibility to disease
This CodeZ15.04Genetic susceptibility to malignant neoplasm of endometrium

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z15.04.

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

Z15.04 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.

  • Endometrial cancer genetic marker of susceptibility positive

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.

    • Genetic
      • susceptibility to disease NEC
        • malignant neoplasm
          • endometrium
    • Susceptibility to disease, genetic
      • malignant neoplasm
        • endometrium

Clinical ClassificationClinical

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

CCSR FAC029
Genetic susceptibility to disease
Default principal diagnosis: inpatient No · outpatient No

Convert Z15.04 to ICD-9-CMHistory

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

ICD-9-CM
V84.04 Genetc susc mal neo endo
Exact Match The mapping is direct, with no qualifiers.

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 Z15.04Overview

Is Z15.04 (Genetic susceptibility to malignant neoplasm) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report genetic susceptibility to malignant neoplasm of endometrium on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z15.04 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because genetic susceptibility to malignant neoplasm of endometrium describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z15.04 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 genetic susceptibility to malignant neoplasm of endometrium on inpatient claims.

What is the ICD-9 equivalent of Z15.04?

Under the General Equivalence Mappings, genetic susceptibility to malignant neoplasm of endometrium converts to ICD-9-CM V84.04 (genetc susc mal neo endo). The mapping is a direct match.