{"code":"M87.07","type":"code","title":"Idiopathic aseptic necrosis of ankle, foot and toes","codeAlso":[],"includes":["avascular necrosis of bone"],"modern_v":"official26","codeFirst":[],"excludes1":["juvenile osteonecrosis (M91-M92)","osteochondropathies (M90-M93)","postprocedural osteopathies (M96.-)"],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["M87.071","M87.072","M87.073","M87.074","M87.075","M87.076","M87.077","M87.078","M87.079"],"inclusionTerms":["Idiopathic aseptic necrosis of metatarsus, tarsus, and phalanges of toes"],"sibling_titles":{"code":"M87.079","title":"Idiopathic aseptic necrosis of unspecified toe(s)","isBillable":true},"useAdditionalCode":["code to identify major osseous defect, if applicable (M89.7-)"],"clinicalDefinition":"Idiopathic aseptic necrosis of ankle, foot and toes is a non-billable ICD-10-CM category code (M87.07). A more specific billable subcode must be selected for claims submission. Includes: avascular necrosis of bone. Inclusion terms: Idiopathic aseptic necrosis of metatarsus, tarsus, and phalanges of toes. Excludes1 (not coded here): juvenile osteonecrosis (M91-M92); osteochondropathies (M90-M93); postprocedural osteopathies (M96.-). Use additional code: code to identify major osseous defect, if applicable (M89.7-).","officialDefinition":"Idiopathic aseptic necrosis of ankle, foot and toes is a non-billable ICD-10-CM category code (M87.07). A more specific billable subcode must be selected for claims submission. Includes: avascular necrosis of bone. Inclusion terms: Idiopathic aseptic necrosis of metatarsus, tarsus, and phalanges of toes. Excludes1 (not coded here): juvenile osteonecrosis (M91-M92); osteochondropathies (M90-M93); postprocedural osteopathies (M96.-). Use additional code: code to identify major osseous defect, if applicable (M89.7-).","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":""}