{"code":"Z28.310","type":"code","title":"Unvaccinated for COVID-19","codeAlso":[", if applicable, encounter for immunization safety counseling (Z71.85)"],"includes":["vaccination not carried out"],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":["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-)"],"clinicalDefinition":"Unvaccinated for COVID-19 is a billable ICD-10-CM diagnosis code (Z28.310). Includes: vaccination not carried out. Use 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-). Code also: , if applicable, encounter for immunization safety counseling (Z71.85).","officialDefinition":"Unvaccinated for COVID-19 is a billable ICD-10-CM diagnosis code (Z28.310). Includes: vaccination not carried out. Use 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-). Code also: , if applicable, encounter for immunization safety counseling (Z71.85).","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}