Carrier of infectious disease (Z22) ICD-10-CM
The Z22 code range covers carrier of infectious disease with 26 ICD-10-CM diagnosis codes. 20 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- colonization status
- suspected carrier
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- carrier of viral hepatitis B18
Codes in the Z22 Range 26 codes · 20 billable
- Z22 Carrier of infectious diseaseNon-billable
- 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 diseasesNon-billable
- Z22.31 Carrier of bacterial disease due to meningococci
- Z22.32 Carrier of bacterial disease due to staphylococciNon-billable
- 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 streptococciNon-billable
- Z22.330 Carrier of Group B streptococcus
- Z22.338 Carrier of other streptococcus
- Z22.34 Carrier of Acinetobacter baumanniiNon-billable
- Z22.340 Carrier of carbapenem-resistant Acinetobacter baumannii
- Z22.341 Carrier of carbapenem-sensitive Acinetobacter baumannii
- Z22.349 Carrier of Acinetobacter baumannii, unspecified
- Z22.35 Carrier of EnterobacteralesNon-billable
- Z22.350 Carrier of carbapenem-resistant Enterobacterales
- Z22.358 Carrier of other Enterobacterales
- Z22.359 Carrier of Enterobacterales, unspecified
- Z22.39 Carrier of other specified bacterial diseases
- Z22.4 Carrier of infections with a predominantly sexual mode of transmission
- Z22.6 Carrier of human T-lymphotropic virus type-1 [HTLV-1] infection
- Z22.7 Latent tuberculosis
- Z22.8 Carrier of other infectious diseases
- Z22.9 Carrier of infectious disease, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the Z22 range.
Latent Tuberculosis
The dormant form of TUBERCULOSIS where the person shows no obvious symptoms and no sign of the causative agent (Mycobacterium tuberculosis) in the SPUTUM despite being positive for tuberculosis infection skin test.
About the Z22 Code Range
The ICD-10 code Z22 identifies individuals known as carriers of infectious diseases, meaning they harbor specific infectious organisms without showing symptoms but can potentially spread the infection to others. This code helps healthcare providers document and manage carrier status for various infections.
The section covers a range of specific carriers, including Z22.0 for typhoid carriers (also called Salmonella carriers), and Z22.1 for carriers of other intestinal infections like cholera or Clostridioides difficile. Codes such as Z22.31 and Z22.32 denote carriers of bacterial diseases caused by meningococci and staphylococci, respectively, with subcodes distinguishing methicillin-sensitive (Staphylococcus aureus) from methicillin-resistant strains (MRSA). Other codes specify carriers of streptococci, Acinetobacter baumannii, Enterobacterales, and sexually transmitted infections (Z22.4). Notably, Z22.7 identifies latent or inactive tuberculosis, while Z22.9 covers unspecified carriers. Using these codes accurately supports infection control and epidemiological tracking, clarifying the carrier status across a broad spectrum of bacteria and viruses.
Questions About This Page
How many billable codes are in the Z22 range?
Of the 26 codes in this range, 20 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the Z22 range classify?
The range classifies carrier of infectious disease. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
