Z28.3 - Underimmunization status

  • Applicable to Underimmunization status
  • The 2025 edition of ICD10-CM Z28.3 became effective on October 1, 2024.
  • This is the American ICD10-CM version of Z28.3 - other international versions of ICD10 Z28.3 may differ.
  • Z28.3 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Z28.3 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.
  • Z28.3 - Underimmunization status
    • Z28.3 - Underimmunization status
    • Z28.31 - Underimmunization for COVID-19 status
    • Z28.310 - Unvaccinated for COVID-19
    • Z28.311 - Partially vaccinated for COVID-19
    • Z28.39 - Other underimmunization status

Code Additional Code

  • code, if applicable, to identify:
  • immunization not carried out because of contraindication (Z28.0-)
  • immunization not carried out because of patient decision for other and unspecified reason (Z28.2-)
  • immunization not carried out because of patient decision for reasons of belief or group pressure (Z28.1)
  • immunization not carried out for other reason (Z28.8-)

The following codes above Z28.3 contain annotation back-references that may be applicable to Z28.3:

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

underimmunization icd 10
 
Non-Billable/Non-Specific Code

Browse other similar CM codes

Z28.0
 
Z28.01
 
Z28.02
 
Z28.03
 
Z28.04
 
Z28.09
 
Z28.1
 
Z28.2
 
Z28.20
 
Z28.21
 
Z28.29
 
Z28.3
 
Z28.31
 
Z28.310
 
Z28.311
 
Z28.39
 
Z28.8
 
Z28.81
 
Z28.82
 
Z28.83
 
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Z28.9
 

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