{"code":"P91.1","type":"code","title":"Acquired periventricular cysts of newborn","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["P91","P91.0","P91.2","P91.3","P91.4","P91.5","P91.6","P91.8","P91.811","P91.819","P91.821","P91.822","P91.823","P91.829","P91.9"],"inclusionTerms":[],"sibling_titles":{"code":"P91.9","title":"Disturbance of cerebral status of newborn, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Acquired periventricular cysts of newborn is a billable ICD-10-CM diagnosis code (P91.1).","officialDefinition":"Acquired periventricular cysts of newborn is a billable ICD-10-CM diagnosis code (P91.1).","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":""}