Z15.8 – Genetic susceptibility to other disease

ICD-10-CM 2027 diagnosis code · Genetic carrier and genetic susceptibility to disease

Non-billable header

ICD-10-CM code Z15.8

Code: Z15.8 (claims format: Z158)
Description: Genetic susceptibility to other disease
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Z14-Z15 Genetic carrier and genetic susceptibility to disease
Parent codes: Z15

Billable codes under Z15.8

Z15.8 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Z15 – Genetic susceptibility to disease

Includes:

confirmed abnormal gene

Excludes1 (not coded here):

chromosomal anomalies (Q90-Q99)

Use additional code:

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

Related codes in Z15

Frequently asked questions

What is ICD-10 code Z15.8?

Z15.8 is the ICD-10-CM code for genetic susceptibility to other disease, in the block Z14-Z15 (Genetic carrier and genetic susceptibility to disease).

Is Z15.8 a billable code?

No. Z15.8 is a header code with more specific child codes; report one of the billable codes listed above.

What category does Z15.8 belong to?

It belongs to category Z15 – Genetic susceptibility to disease.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.