Z28.31 - Underimmunization for COVID-19 status
- Applicable to Underimmunization for COVID-19 status
- The 2025 edition of ICD10-CM Z28.31 became effective on October 1, 2024.
- This is the American ICD10-CM version of Z28.31 - other international versions of ICD10 Z28.31 may differ.
- Z28.31 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- Z28.31 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
- Z28.31 - Underimmunization for COVID-19 status
- Z28.31 - Underimmunization for COVID-19 status
- Z28.310 - Unvaccinated for COVID-19
- Z28.311 - Partially vaccinated for COVID-19
Code Notes
- These codes should not be used for individuals who are not eligible for the COVID-19 vaccines, as determined by the healthcare provider.
The following codes above Z28.31 contain annotation back-references that may be applicable to Z28.31:
Chapter: Z00-Z99 Factors influencing health status and contact with health services
Section: Z20-Z29 Persons with potential health hazards related to communicable diseases
Category: Z28 Immunization not carried out and underimmunization status
Non-Billable/Non-Specific Code
Browse other similar CM codes
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
Please, give attribution to our website icd-10code.com