2026 ICD-10-CM Diagnosis Code Z22Carrier of infectious disease

ICD-10-CM Codes›Z00–Z99›Z20-Z29›Z22

ICD-10-CM Z22
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z22 is a non-billable ICD-10-CM category code for carrier of infectious disease, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z22.0, Z22.1, Z22.2, and Z22.31.

Code Identity

ICD-10-CM Code
Z22
Billable Status
No — Non-Billable Category
Code Describes
Carrier of infectious disease
Chapter
Z20-Z29
Persons with potential health hazards related to communicable diseases

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ20-Z29Persons with potential health hazards related to communicable diseases
CategoryZ22Carrier of infectious disease
This CodeZ22Carrier of infectious disease

Specific Coding for Carrier of infectious diseaseOverview

Non-specific codes like Z22 require more characters. Use one of these billable codes instead:

  • Use Z22.0 for Carrier of typhoid

  • Use Z22.1 for Carrier of other intestinal infectious diseases

  • Use Z22.2 for Carrier of diphtheria

  • Z22.3 for Carrier of other specified bacterial diseases

  • Use Z22.31 for Carrier of bacterial disease due to meningococci

  • Z22.32 for Carrier of bacterial disease due to staphylococci

  • Z22.33 for Carrier of bacterial disease due to streptococci

  • Z22.34 for Carrier of Acinetobacter baumannii

  • Z22.35 for Carrier of Enterobacterales

  • Use Z22.39 for Carrier of other specified bacterial diseases

  • Use Z22.4 for Carrier of infections with a predominantly sexual mode of transmission

  • Use Z22.6 for Carrier of human T-lymphotropic virus type-1 [HTLV-1] infection

  • Use Z22.7 for Latent tuberculosis

  • Use Z22.8 for Carrier of other infectious diseases

  • Use Z22.9 for Carrier of infectious disease, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • colonization status
  • suspected carrier

Type 2 Excludes

  • carrier of viral hepatitis B18

Patient EducationClinical

Infectious Diseases

Germs, or microbes, are found everywhere - in the air, soil, and water. There are also germs on your skin and in your body. Many of them are harmless, and some can even be helpful. But some of them can make you sick. Infectious diseases are diseases that are caused by germs.

The full article covers:

  • What are infectious diseases?
  • What are the different types of germs that cause infectious diseases?
  • How can you get infectious diseases?
  • What are the symptoms of infectious diseases?
  • What are the treatments for infectious diseases?
  • Can infectious diseases be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z22Overview

Is Z22 (Carrier of infectious disease) a billable code?

No. This is a category header that groups the codes for carrier of infectious disease, and headers cannot be submitted on claims. Claims for carrier of infectious disease need a more specific code from this category, such as Z22.0, Z22.1, and Z22.2.