{"code":"V66.4XXA","type":"code","title":"Person boarding or alighting a heavy transport vehicle injured in collision with other nonmotor vehicle, initial encounter","codeAlso":[],"includes":["collision with animal-drawn vehicle, animal being ridden, streetcar","18 wheeler","armored car","panel truck"],"modern_v":"official26","codeFirst":[],"excludes1":["bus","motorcoach"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Person boarding or alighting a heavy transport vehicle injured in collision with other nonmotor vehicle, initial encounter is a billable ICD-10-CM diagnosis code (V66.4A). Includes: collision with animal-drawn vehicle, animal being ridden, streetcar; 18 wheeler; armored car; panel truck. Excludes1 (not coded here): bus; motorcoach. 7th character: The appropriate 7th character is to be added to each code from category V66.","officialDefinition":"Person boarding or alighting a heavy transport vehicle injured in collision with other nonmotor vehicle, initial encounter is a billable ICD-10-CM diagnosis code (V66.4A). Includes: collision with animal-drawn vehicle, animal being ridden, streetcar; 18 wheeler; armored car; panel truck. Excludes1 (not coded here): bus; motorcoach. 7th character: The appropriate 7th character is to be added to each code from category V66.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category V66"],"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":"","noteProvenance":{"bus":"V66","motorcoach":"V66","collision with animal-drawn vehicle, animal being ridden, streetcar":"V66","18 wheeler":"V66","armored car":"V66","panel truck":"V66"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}