ICD-10-CM Diagnosis Code O22.31
Diagnosis Code: O22.31 (Raw: O2231)
Description: Deep phlebothrombosis in pregnancy, first 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 O22.31 is designated for Deep phlebothrombosis in pregnancy, first 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.