{"code":"H81.9","type":"code","title":"Unspecified disorder of vestibular function","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["epidemic vertigo (A88.1)","vertigo NOS (R42)"],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["H81.90","H81.91","H81.92","H81.93"],"inclusionTerms":["Vertiginous syndrome NOS"],"sibling_titles":{"code":"H81.93","title":"Unspecified disorder of vestibular function, bilateral","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Unspecified disorder of vestibular function is a non-billable ICD-10-CM category code (H81.9). A more specific billable subcode must be selected for claims submission. Inclusion terms: Vertiginous syndrome NOS. Excludes1 (not coded here): epidemic vertigo (A88.1); vertigo NOS (R42).","officialDefinition":"Unspecified disorder of vestibular function is a non-billable ICD-10-CM category code (H81.9). A more specific billable subcode must be selected for claims submission. Inclusion terms: Vertiginous syndrome NOS. Excludes1 (not coded here): epidemic vertigo (A88.1); vertigo NOS (R42).","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":"","noteProvenance":{"epidemic vertigo (A88.1)":"H81","vertigo NOS (R42)":"H81"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}