Genetic carrier and genetic susceptibility to disease (Z14-Z15) ICD-10-CM
The Z14–Z15 section covers genetic carrier and genetic susceptibility to disease with 24 ICD-10-CM diagnosis codes, of which 18 are billable in fiscal year 2026. The section is organized into the 2 code ranges listed below.
Code Ranges in This Section 2 ranges · 24 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| Z14 | Genetic carrier (Z14) | 6 | 4 |
| Z15 | Genetic susceptibility to disease (Z15) | 18 | 14 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the Z14–Z15 Code Range
ICD-10 codes Z14 through Z15 identify individuals who are carriers of certain genetic conditions or have a genetic susceptibility to specific diseases. These codes play a key role in documenting genetic risks for inherited disorders or predispositions, which may not yet cause symptoms but are important for medical management and family planning.
The Z14 category covers genetic carriers, including carriers of hemophilia A (both symptomatic and asymptomatic), cystic fibrosis, and a wide range of other inherited conditions such as muscular dystrophy, fragile X syndrome, and various metabolic and neurogenetic disorders. For example, someone identified as a hemophilia carrier (Z14.0) or a cystic fibrosis carrier (Z14.1) will have their carrier status documented for clinical awareness. Meanwhile, the Z15 codes indicate genetic susceptibility to diseases like malignant neoplasms (cancers), epilepsy, obesity, and other conditions. Subcodes such as Z15.01 specify genetic risks for breast cancer linked to BRCA1 or BRCA2 mutations, while Z15.81 addresses susceptibility to multiple endocrine neoplasia. Using these codes helps healthcare providers identify at-risk individuals for personalized monitoring and preventive care based on their hereditary profiles.
Questions About This Page
How many codes are in the Z14-Z15 range?
The Z14-Z15 range contains 24 ICD-10-CM diagnosis codes in FY 2026. 18 of them are billable, and the rest are category headers that organize the section.
What conditions does Z14-Z15 cover?
The range covers genetic carrier and genetic susceptibility to disease. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
