ICD-10-CM 2027 diagnosis code

Z22.35Carrier of Enterobacterales

Not billable — use a more specific code

Z22.35 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code last changed in FY2024 (effective October 1, 2023). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z22.35

Z22.35 is the ICD-10-CM diagnosis code for carrier of Enterobacterales. It belongs to category Z22 (carrier of infectious disease), 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 3 subcodes must be used instead.

Within Z22.3 (carrier of other specified bacterial diseases), Z22.35 is specifically for carrier of Enterobacterales. Related codes cover bacterial disease due to meningococci (Z22.31), bacterial disease due to staphylococci (Z22.32), bacterial disease due to streptococci (Z22.33), Acinetobacter baumannii (Z22.34) and other specified bacterial diseases (Z22.39).

To report this condition, pick the subcode that matches the documentation: Z22.350 (Enterobacterales), Z22.358 (Enterobacterales) and Z22.359 (unspecified).

It was added in FY2024, effective October 1, 2023.

Specific codes under Z22.35

Coding notes

Applicable toConditions and synonyms classified to this code

Carrier of E. coli
Carrier of K. pneumoniae

Notes that apply from higher levels

Instructions written at a parent level also apply to Z22.35.

› From Z22 Carrier of infectious disease

Includes

colonization status
suspected carrier

Excludes2

carrier of viral hepatitis (B18.-)

Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to Z22.35.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2024 (effective 10/1/2023): Added
No changes since FY2024.

Common questions about Z22.35

Is Z22.35 billable?: No. Z22.35 is a header code. Report one of its more specific subcodes instead.