{"code":"O35.06","type":"category","title":"Maternal care for (suspected) central nervous system malformation or damage in fetus, hydrocephaly","codeAlso":["any associated maternal condition"],"includes":["the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy"],"modern_v":"official26","codeFirst":[],"excludes1":["encounter for suspected maternal and fetal conditions ruled out (Z03.7-)"],"excludes2":["chromosomal abnormality in fetus (O35.1-)"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["O35.060","O35.061","O35.062","O35.063","O35.064","O35.065","O35.069"],"inclusionTerms":["Maternal care for fetal hydrocephalus"],"sibling_titles":{"code":"O35.069","title":"Maternal care for (suspected) central nervous system malformation or damage in fetus, hydrocephaly, other fetus","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Maternal care for (suspected) central nervous system malformation or damage in fetus, hydrocephaly is a non-billable ICD-10-CM category code (O35.06). A more specific billable subcode must be selected for claims submission. Includes: the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy. Inclusion terms: Maternal care for fetal hydrocephalus.","officialDefinition":"Maternal care for (suspected) central nervous system malformation or damage in fetus, hydrocephaly is a non-billable ICD-10-CM category code (O35.06). A more specific billable subcode must be selected for claims submission. Includes: the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy. Inclusion terms: Maternal care for fetal hydrocephalus. Excludes1 (not coded here): encounter for suspected maternal and fetal conditions ruled out (Z03.7-). Excludes2 (not included here): chromosomal abnormality in fetus (O35.1-). Code also: any associated maternal condition. 7th character: One of the following 7th characters is to be assigned to each code under category O35.  7th character 0 is for single gestations and multiple gestations where the fetus is unspecified.  7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O35 that has a 7th character of 1 through 9..","seventhCharacterInstructions":["One of the following 7th characters is to be assigned to each code under category O35.  7th character 0 is for single gestations and multiple gestations where the fetus is unspecified.  7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O35 that has a 7th character of 1 through 9."],"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":""}