Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes O00-O9A – Pregnancy, childbirth and the puerperium (O00-O9A) > 2024 ICD-10-CM Codes O20-O29 – Other maternal disorders predominantly related to pregnancy (O20-O29) > 2024 ICD-10-CM Codes O24 – Diabetes mellitus in pregnancy, childbirth, and the puerperium (O24) > 2024 ICD-10-CM Codes O24.1 – Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium (O24.1)