Z22.330 — Carrier of Group B streptococcus
Is Z22.330 billable?
Yes — Z22.330 is billable for FY2027. Z22.330 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z22.330 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z22.330 at a glance
| Code | Z22.330 |
|---|---|
| Description | Carrier of Group B streptococcus |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z22.330?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z22.330 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 Z22.330 group to?
Z22.330 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 Z22.330 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z22.330. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Carrierof › streptococci › group B (suspected)
- Carrierof › bacterial disease NEC › streptococcal › group B (suspected)
Excludes1 — never code together
The conditions below can never be reported together with Z22.330 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Carrier of streptococcus group B (GBS) complicating pregnancy, childbirth and the puerperium (O99.82-)
Excludes2 — not included here — inherited from Z22
The conditions below are not part of Z22.330, but a patient may have both at the same time. When documentation supports it, Z22.330 and the excluded code may both be reported.
- carrier of viral hepatitis (B18.-)
How long has Z22.330 existed?
Z22.330 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.