Z15.89 — Genetic susceptibility to other disease
Is Z15.89 billable?
Yes — Z15.89 is billable for FY2027. Z15.89 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z15.89 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z15.89 at a glance
| Code | Z15.89 |
|---|---|
| Description | Genetic susceptibility to other disease |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z15.89?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z15.89 directly.
CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.
Which MS-DRGs does Z15.89 group to?
Z15.89 sits in MDC 23 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 951Other Factors Influencing Health Statusmedical
How is Z15.89 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z15.89. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Susceptibility to disease, genetic
- Genetic › susceptibility to disease NEC
Excludes1 — never code together — inherited from Z15
The conditions below can never be reported together with Z15.89 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- chromosomal anomalies (Q90-Q99)
Use additional code — inherited from Z15
Report an additional code alongside Z15.89 to fully describe the condition. Z15.89 is sequenced first.
- code, if applicable, for any associated family history of the disease (Z80-Z84)
How long has Z15.89 existed?
Z15.89 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.