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ICD-10/Z22.322

Z22.322 ICD-10-CM Code: Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus is a billable ICD-10-CM diagnosis code (Z22.322).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for Z22.322 in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • colonization status
  • suspected carrier

Inclusion Terms

Alternative terms the tabular list files under this code.

  • MRSA colonization

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • carrier of viral hepatitis (B18.-)

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z22.322 in its code family, with their registry titles.

  • Z22.2 — Carrier of diphtheria
  • Z22.3 — Carrier of other specified bacterial diseases
  • Z22.31 — Carrier of bacterial disease due to meningococci
  • Z22.32 — Carrier of bacterial disease due to staphylococci
  • Z22.321 — Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureus
  • Z22.33 — Carrier of bacterial disease due to streptococci
  • Z22.330 — Carrier of Group B streptococcus
  • Z22.338 — Carrier of other streptococcus
  • Z22.34 — Carrier of Acinetobacter baumannii
  • Z22.340 — Carrier of carbapenem-resistant Acinetobacter baumannii

View all codes in the Z22 family

Indexed Clinical Terms (4)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Carrierof (suspected), bacterial disease NEC, staphylococcal (Methicillin susceptible), Methicillin resistant
  • Carrierof (suspected), staphylococci (Methicillin susceptible), Methicillin resistant
  • Colonization, MRSA (Methicillin resistant Staphylococcus aureus)
  • Positive, culture (nonspecific), nose, staphylococcus (Methicillin susceptible), Methicillin resistant