{"code":"H70.89","type":"code","title":"Other mastoiditis and related conditions","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["preauricular sinus and cyst (Q18.1)","sinus, fistula, and cyst of branchial cleft (Q18.0)"],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["H70.891","H70.892","H70.893","H70.899"],"inclusionTerms":[],"sibling_titles":{"code":"H70.899","title":"Other mastoiditis and related conditions, unspecified ear","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Other mastoiditis and related conditions is a non-billable ICD-10-CM category code (H70.89). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): preauricular sinus and cyst (Q18.1); sinus, fistula, and cyst of branchial cleft (Q18.0).","officialDefinition":"Other mastoiditis and related conditions is a non-billable ICD-10-CM category code (H70.89). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): preauricular sinus and cyst (Q18.1); sinus, fistula, and cyst of branchial cleft (Q18.0).","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":""}