ICD-10-CM Diagnosis Code O21.0
Diagnosis Code: O21.0 (Raw: O210)
Description: Mild hyperemesis gravidarum
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 O21.0 is designated for Mild hyperemesis gravidarum. 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.