Z22.321

Billable

ChapterZ00–Z99

Ranksubcategory

Official Description

Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureus

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Instructional Notes

Includes

MSSA colonization

General instructions are available for the parent sections:

View Z22 Notes

Clinical Hierarchy

CH21Factors influencing health status and contact with health services (Z00-Z99)

Z20-Z29Persons with potential health hazards related to communicable diseases (Z20-Z29)

Z22Carrier of infectious disease

Z22.3Carrier of other specified bacterial diseases

Z22.32Carrier of bacterial disease due to staphylococci

Z22.321Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureus

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Z22.321:

categoryZ22

Carrier of infectious disease

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Z22.321. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

4 raw paths

Carrier (suspected) of2 unique routes

bacterial disease NEC

staphylococcal (Methicillin susceptible)→Z22.321

staphylococci (Methicillin susceptible)→Z22.321

Colonization1 unique routes

MSSA (Methicillin susceptible Staphylococcus aureus)→Z22.321

Positive1 unique routes

culture (nonspecific)

nose

staphylococcus (Methicillin susceptible)→Z22.321