ICD-10 Code O24.012 - Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester

ICD-10-CM Diagnosis Code O24.012

Diagnosis Code: O24.012 (Raw: O24012)

Description: Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting.

Overview & Clinical Details

ICD-10-CM code O24.012 is designated for Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.