{"code":"K09.1","type":"code","title":"Developmental (nonodontogenic) cysts of oral region","codeAlso":[],"includes":["lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion"],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["cysts of jaw (M27.0-, M27.4-)","radicular cyst (K04.8)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["K09","K09.0","K09.8","K09.9"],"inclusionTerms":["Cyst (of) incisive canal","Cyst (of) palatine of papilla","Globulomaxillary cyst","Median palatal cyst","Nasoalveolar cyst","Nasolabial cyst","Nasopalatine duct cyst"],"sibling_titles":{"code":"K09.9","title":"Cyst of oral region, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Developmental (nonodontogenic) cysts of oral region is a billable ICD-10-CM diagnosis code (K09.1). Includes: lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion. Inclusion terms: Cyst (of) incisive canal; Cyst (of) palatine of papilla; Globulomaxillary cyst; Median palatal cyst; Nasoalveolar cyst; Nasolabial cyst; Nasopalatine duct cyst. Excludes2 (not included here): cysts of jaw (M27.0-, M27.4-); radicular cyst (K04.8).","officialDefinition":"Developmental (nonodontogenic) cysts of oral region is a billable ICD-10-CM diagnosis code (K09.1). Includes: lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion. Inclusion terms: Cyst (of) incisive canal; Cyst (of) palatine of papilla; Globulomaxillary cyst; Median palatal cyst; Nasoalveolar cyst; Nasolabial cyst; Nasopalatine duct cyst. Excludes2 (not included here): cysts of jaw (M27.0-, M27.4-); radicular cyst (K04.8).","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":""}