{"code":"M18.52","type":"code","title":"Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["osteoarthritis of spine (M47.-)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true},"sibling_codes":["M18","M18.0","M18.1","M18.10","M18.11","M18.12","M18.2","M18.3","M18.30","M18.31","M18.32","M18.4","M18.5","M18.50","M18.51","M18.9"],"inclusionTerms":[],"sibling_titles":{"code":"M18.9","title":"Osteoarthritis of first carpometacarpal joint, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand is a billable ICD-10-CM diagnosis code (M18.52). Excludes2 (not included here): osteoarthritis of spine (M47.-).","officialDefinition":"Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand is a billable ICD-10-CM diagnosis code (M18.52). Excludes2 (not included here): osteoarthritis of spine (M47.-).","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":""}