ICD-10-CM Diagnosis Code O10.012
Diagnosis Code: O10.012 (Raw: O10012)
Description: Pre-existing essential hypertension complicating 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 O10.012 is designated for Pre-existing essential hypertension complicating 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.