O26.1 Low weight gain in pregnancyNon-billable header with 4 child codes.
O26.10 Low weight gain in pregnancy, unspecified trimesterO26.11 Low weight gain in pregnancy, first trimesterO26.12 Low weight gain in pregnancy, second trimesterO26.13 Low weight gain in pregnancy, third trimesterZ03.7 Encounter for suspected maternal and fetal conditions ruled out ("known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)")O26.0 Excessive weight gain in pregnancyO26.00 Excessive weight gain in pregnancy, unspecified trimesterO26.01 Excessive weight gain in pregnancy, first trimesterO26.02 Excessive weight gain in pregnancy, second trimesterO26.03 Excessive weight gain in pregnancy, third trimesterO26.1 Low weight gain in pregnancy (this code)O26.10 Low weight gain in pregnancy, unspecified trimesterO26.11 Low weight gain in pregnancy, first trimesterO26.12 Low weight gain in pregnancy, second trimesterO26.13 Low weight gain in pregnancy, third trimesterO26.2 Pregnancy care for patient with recurrent pregnancy loss