{"code":"P07.21","type":"code","title":"Extreme immaturity of newborn, gestational age less than 23 completed weeks","codeAlso":[],"includes":["the listed conditions, without further specification, as the cause of morbidity or additional care, in newborn"],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true},"sibling_codes":["P07","P07.0","P07.01","P07.02","P07.03","P07.1","P07.10","P07.14","P07.15","P07.16","P07.17","P07.18","P07.2","P07.20","P07.22","P07.23","P07.24","P07.25","P07.26","P07.3","P07.30","P07.31","P07.32","P07.33","P07.34","P07.35","P07.36","P07.37","P07.38","P07.39"],"inclusionTerms":["Extreme immaturity of newborn, gestational age less than 23 weeks, 0 days"],"sibling_titles":{"code":"P07.39","title":"Preterm newborn, gestational age 36 completed weeks","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Extreme immaturity of newborn, gestational age less than 23 completed weeks is a billable ICD-10-CM diagnosis code (P07.21). Includes: the listed conditions, without further specification, as the cause of morbidity or additional care, in newborn. Inclusion terms: Extreme immaturity of newborn, gestational age less than 23 weeks, 0 days.","officialDefinition":"Extreme immaturity of newborn, gestational age less than 23 completed weeks is a billable ICD-10-CM diagnosis code (P07.21). Includes: the listed conditions, without further specification, as the cause of morbidity or additional care, in newborn. Inclusion terms: Extreme immaturity of newborn, gestational age less than 23 weeks, 0 days.","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":""}