Hospital Discharge Codes and Overestimating Severe Maternal Morbidity During Delivery Hospitalization.

Obstet Gynecol

Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, and the Department of Anesthesiology, the Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, the Department of Population Health Sciences, and the Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina; and the Department of Obstetrics and Gynecology, University of California, San Francisco, San Francisco, California.

Published: April 2024

Our objective was to identify birth hospitalization severe maternal morbidity (SMM) diagnoses that were also coded during prior encounters and, thus, potentially falsely carried forward as de novo SMM events. This retrospective cohort study included pregnant patients with births between 2016 and 2020. We applied the SMM algorithm to the birth hospitalization and encounters occurring prepregnancy, antepartum, and postpartum. The primary outcome was the rate of SMM diagnoses recorded during the birth hospitalization that were also coded on previous encounters. There were 1,380 (1.8%) birthing patients with SMM. Of patients with SMM codes at the birth hospitalization, 19.0% had the same SMM code during a prior encounter. Certain SMM events may be prone to carry-forward errors and may not signify a de novo birth hospitalization event.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11471142PMC
http://dx.doi.org/10.1097/AOG.0000000000005537DOI Listing

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