ICD-10-CM › Chapter 21 Factors influencing health... › Z20-Z29
Z20-Z29 - Persons with potential health hazards related to communicable diseases
90 ICD-10-CM codes sit in this section, of which 65 are billable in FY2027. Every one has a page giving the years it was valid and what to use instead when it is not.
- 90 codes
- 65 billable FY2027
- 25 not billable, retired or subdivided
- 6 categories
Categories
Each of these is a three-character category. Most are not billable on their own - the billable code is one of the children listed on its page.
| Code | Description | Status |
|---|---|---|
| Z20 | Contact with and (suspected) exposure to communicable diseases | Not billable |
| Z21 | Asymptomatic human immunodeficiency virus [HIV] infection status | Valid |
| Z22 | Carrier of infectious disease | Not billable |
| Z23 | Encounter for immunization | Valid |
| Z28 | Immunization not carried out and underimmunization status | Not billable |
| Z29 | Encounter for other prophylactic measures | Not billable |
Or browse all ICD-10-CM codes by first character, check a list of codes with the batch validity checker, or see what changed in each release.