{"code":"M18.1","type":"code","title":"Unilateral primary osteoarthritis of first carpometacarpal joint","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["osteoarthritis of spine (M47.-)"],"isBillable":false,"sibling_codes":["M18.10","M18.11","M18.12"],"inclusionTerms":["Primary osteoarthritis of first carpometacarpal joint NOS"],"sibling_titles":{"code":"M18.12","title":"Unilateral primary osteoarthritis of first carpometacarpal joint, left hand","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Unilateral primary osteoarthritis of first carpometacarpal joint is a non-billable ICD-10-CM category code (M18.1). A more specific billable subcode must be selected for claims submission. Inclusion terms: Primary osteoarthritis of first carpometacarpal joint NOS. Excludes2 (not included here): osteoarthritis of spine (M47.-).","officialDefinition":"Unilateral primary osteoarthritis of first carpometacarpal joint is a non-billable ICD-10-CM category code (M18.1). A more specific billable subcode must be selected for claims submission. Inclusion terms: Primary osteoarthritis of first carpometacarpal joint NOS. 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":""}