Z28.1 Immunization not carried out because of patient decision for reasons of belief or group pressure
The ICD-10-CM code for Immunization not carried out because of patient decision for reasons of belief or group pressure is Z28.1 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- Z20-Z29: Persons with potential health hazards related to communicable diseases (Z20-Z29)
- Category Z28
- 23 codes (17 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to Z28.1:
- Immunization › not done (not carried out) › because (of) › group pressure
- Immunization › not done (not carried out) › because (of) › religious beliefs of patient
- Immunization › not done (not carried out) › because (of) › patient's belief
Inclusion Terms
- Immunization not carried out because of religious belief
U.S. Hospital Utilization
- An estimated 540 U.S. inpatient stays in 2023 included Z28.1 among the documented diagnoses.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
Used with any code in range A00.0-T88.9, Z00-Z991) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.
Additional codes with observation code (fragment)observation code, but only if they are unrelated to the suspected condition being observed.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026