Z22.322 — Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus
Is Z22.322 billable?
Yes — Z22.322 is billable for FY2027. Z22.322 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z22.322 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z22.322 at a glance
| Code | Z22.322 |
|---|---|
| Description | Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z22.322?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z22.322 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 Z22.322 group to?
Z22.322 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 Z22.322 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z22.322. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Colonization › MRSA
- Carrierof › staphylococci › Methicillin resistant (suspected)
- Carrierof › bacterial disease NEC › staphylococcal › Methicillin resistant (suspected)
- Positive › culture › nose › staphylococcus › Methicillin resistant
Inclusion terms
Alternative wording in documentation that is classified to Z22.322.
- MRSA colonization
Excludes2 — not included here — inherited from Z22
The conditions below are not part of Z22.322, but a patient may have both at the same time. When documentation supports it, Z22.322 and the excluded code may both be reported.
- carrier of viral hepatitis (B18.-)
How long has Z22.322 existed?
Z22.322 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.