Background: Hypertensive disorders of pregnancy (HDP) are one of the leading causes of maternal death. HDP is a leading cause of postpartum readmissions in the U.S. The initiation of an antihypertensive medication postpartum is at the provider’s discretion with no specific guidelines on when to initiate therapy for mild HDP. Our aim was to identify patients with HDP who were discharged home postpartum without antihypertensive therapy, and to characterize the high-risk patients who required readmission for blood pressure (BP) control. Methods: This was a 2020-2022 single center retrospective study examining readmission rates and characteristics of patients readmitted for HDP complications. Inclusion criteria were age≥18yo, diagnosis of preeclampsia or gestational hypertension, BP prior to discharge at <160/105 mmHg and discharge after delivery with no antihypertensive therapy. Descriptive statistics and bivariate analyses were done as appropriate. Results: A total of 159 patients met all inclusion criteria, with 27 (16.9%) requiring a readmission for hypertension-related reason. There was no difference in sociodemographic characteristics between patients who were readmitted and controls. Patients who were readmitted had a trend toward higher systolic BP at delivery discharge compared to patients who were not readmitted (143mmHg [IQR 136,148] versus 138 [IQR 130,148], p value= 0.09). However, upon readmission, systolic BP was much higher, at median value of 168 mmHg [IQR 149,178]. Among patients who were readmitted, 88.9% were diagnosed with preeclampsia with severe features and 92.6% required magnesium sulfate therapy. Eighty five percent of readmitted patients were started on antihypertensive therapy. Conclusion: Patients with HDP discharged home without antihypertensive medications had 16.9% risk of postpartum readmission. Most of the readmitted patients developed severe HDP features and required outpatient antihypertensive therapy. The results of this study prompt future research to standardize postpartum HDP treatment and identify patients at a high risk for HDP-related complications postpartum.