ICD-10-CM > O00-O9A > O20-O29 > O25 O25 Malnutrition in pregnancy, childbirth and the puerperium Non-Billable/Non-Specific Codes O25.1Malnutrition in pregnancyO25.10Malnutrition in pregnancy, unspecified trimesterO25.11Malnutrition in pregnancy, first trimesterO25.12Malnutrition in pregnancy, second trimesterO25.13Malnutrition in pregnancy, third trimesterO25.2Malnutrition in childbirthO25.3Malnutrition in the puerperium