ICD-10-CM 2027 diagnosis code
Z22Carrier of infectious disease
Z22 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Z22
Z22 is the ICD-10-CM diagnosis code for carrier of infectious disease. It belongs to block Z20-Z29 (persons with potential health hazards related to communicable diseases) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: Z22.0 (typhoid), Z22.1 (diseases), Z22.2 (diphtheria), Z22.3 (diseases), Z22.4 (transmission), Z22.6 (infection), Z22.7 (tuberculosis), Z22.8 (diseases) and 1 more.
The conditions in its Excludes2 note aren't part of Z22, but may be coded alongside it if the patient has both: carrier of viral hepatitis (B18.-).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under Z22
- Z22.0Carrier of typhoidBillable
- Z22.1Carrier of other intestinal infectious diseasesBillable
- Z22.2Carrier of diphtheriaBillable
- Z22.3Carrier of other specified bacterial diseases
- Z22.31Carrier of bacterial disease due to meningococciBillable
- Z22.32Carrier of bacterial disease due to staphylococci
- Z22.33Carrier of bacterial disease due to streptococci
- Z22.34Carrier of Acinetobacter baumannii
- Z22.35Carrier of Enterobacterales
- Z22.39Carrier of other specified bacterial diseasesBillable
- Z22.4Carrier of infections with a predominantly sexual mode of transmissionBillable
- Z22.5Carrier of viral hepatitis
- Z22.6Carrier of human T-lymphotropic virus type-1 [HTLV-1] infectionBillable
- Z22.7Latent tuberculosisBillable
- Z22.8Carrier of other infectious diseasesBillable
- Z22.9Carrier of infectious disease, unspecifiedBillable
Coding notes
- colonization status
- suspected carrier
- carrier of viral hepatitis (B18.-)
Notes that apply from higher levels
Instructions written at a parent level also apply to Z22.
Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.
Codes whose notes reference Z22
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about Z22
Is Z22 billable?
- No. Z22 is a header code. Report one of its more specific subcodes instead.