{"code":"O24.31","type":"code","title":"Unspecified pre-existing diabetes mellitus in pregnancy","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)","maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["O24.311","O24.312","O24.313","O24.319"],"inclusionTerms":[],"sibling_titles":{"code":"O24.319","title":"Unspecified pre-existing diabetes mellitus in pregnancy, unspecified trimester","isBillable":true},"useAdditionalCode":["code (for):","from category E11 to further identify any manifestation","injectable non-insulin antidiabetic drugs (Z79.85)","long-term (current) use of insulin (Z79.4)"],"clinicalDefinition":"Unspecified pre-existing diabetes mellitus in pregnancy is a non-billable ICD-10-CM category code (O24.31). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48); maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99).","officialDefinition":"Unspecified pre-existing diabetes mellitus in pregnancy is a non-billable ICD-10-CM category code (O24.31). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48); maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99). Use additional code: code (for):; from category E11 to further identify any manifestation; injectable non-insulin antidiabetic drugs (Z79.85); long-term (current) use of insulin (Z79.4).","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":""}