All ICD10 Codes
Z15Not billable, use a more specific code below

Genetic susceptibility to disease

In Genetic carrier and genetic susceptibility to disease (Z14-Z15), chapter 21: Factors Influencing Health Status and Contact with Health Services

14 billable codes under Z15: none are a CC or MCC; none map to an HCC.

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Instructional notes

Includes: conditions that are coded here

  • confirmed abnormal gene

Excludes1: not coded here, use a different code

Use additional code: add a second code for this, listed after this one

  • code, if applicable, for any associated family history of the disease (Z80-Z84)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers when and how to use Z codes (Z00-Z99) for encounters and supplementary information, including contact, status, history, screening, aftercare, exams, and social determinants of health.

Read Section I.C.21 (page 92)

All codes under Z15

Z15 can't be used on a claim. Pick a billable code below; grey headings group them.

Z15 MS-DRG

As the principal diagnosis, all 14 billable codes under Z15 group to MS-DRG 951 (v44.0).

Other codes that refer to Z15

Notes on these codes point to Z15.

  • Z40.0 Use Additional Code: code to identify risk factor, such as genetic susceptibility to malignant neoplasm Z15.-

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.