{"code":"Q66.2","type":"code","title":"Congenital metatarsus (primus) varus","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["reduction defects of feet (Q72.-)","valgus deformities (acquired) (M21.0-)","varus deformities (acquired) (M21.1-)"],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["Q66.211","Q66.212","Q66.219","Q66.221","Q66.222","Q66.229"],"inclusionTerms":[],"sibling_titles":{"code":"Q66.229","title":"Congenital metatarsus adductus, unspecified foot","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Congenital metatarsus (primus) varus is a non-billable ICD-10-CM category code (Q66.2). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): reduction defects of feet (Q72.-); valgus deformities (acquired) (M21.0-); varus deformities (acquired) (M21.1-).","officialDefinition":"Congenital metatarsus (primus) varus is a non-billable ICD-10-CM category code (Q66.2). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): reduction defects of feet (Q72.-); valgus deformities (acquired) (M21.0-); varus deformities (acquired) (M21.1-).","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":""}