Z22.359 — Carrier of Enterobacterales, unspecified
Is Z22.359 billable?
Yes, but Z22.359 is an unspecified code. Z22.359 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Z22.359 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Z22.359 — the more specific alternatives are listed below.
More specific alternatives
Z22.359 at a glance
| Code | Z22.359 |
|---|---|
| Description | Carrier of Enterobacterales, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z22.359?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z22.359 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 Z22.359 group to?
Z22.359 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 Z22.359 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z22.359. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Carrierof › Enterobacterales (suspected)
Excludes2 — not included here — inherited from Z22
The conditions below are not part of Z22.359, but a patient may have both at the same time. When documentation supports it, Z22.359 and the excluded code may both be reported.
- carrier of viral hepatitis (B18.-)
How long has Z22.359 existed?
Z22.359 first appears in FY2024.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.