ICD-10-CM Diagnosis Codes →
section notes
21. Factors influencing health status and contact with health services (Z00-Z99) →
section notes
Z20-Z29 Persons with potential health hazards related to communicable diseases (Z20-Z29) →
section notes
Z28 Immunization not carried out and underimmunization status →
section notes
Z28.3 Underimmunization status →
section notes
Z28.31 Underimmunization for COVID-19 status →
section notes
Z28.310   Unvaccinated for COVID-19
Z28.311   Partially vaccinated for COVID-19
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