Z22.9 is the authoritative medical code for Carrier of infectious disease, unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for carrier of infectious disease, unspecified (ICD-10-CM Z22.9), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Carrier of infectious disease, unspecified is a billable ICD-10-CM diagnosis code Z22.9. Includes: colonization status; suspected carrier. Excludes2 (not included here): carrier of viral hepatitis B18.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Z22.9 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
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.-
Frequently Asked Questions (FAQ) & Clinical Guidance
Can Z22.9 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, Z22.9 and the following are not considered part of each other and may both be reported when both conditions are present: carrier of viral hepatitis (B18.-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to Z22.9 in its code family, with their registry titles.
- Z22 — Carrier of infectious disease
- Z22.0 — Carrier of typhoid
- Z22.1 — Carrier of other intestinal infectious diseases
- 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
- Z22.322 — Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus
- Z22.33 — Carrier of bacterial disease due to streptococci
View all 25 codes in the Z22 family
Indexed Clinical Terms (1)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Carrierof (suspected), infectious organism