{"code":"O24.312","type":"code","title":"Unspecified pre-existing diabetes mellitus in pregnancy, second trimester","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":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"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, second trimester is a billable ICD-10-CM diagnosis code (O24.312). 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).","officialDefinition":"Unspecified pre-existing diabetes mellitus in pregnancy, second trimester is a billable ICD-10-CM diagnosis code (O24.312). 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":""}