ArticleActa obstetricia et gynecologica Scandinavica2021
Accuracy of postpartum hemorrhage coding in the Swedish Pregnancy Register.
Article in Acta obstetricia et gynecologica Scandinavica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The Association of Antidepressants in Late Pregnancy with Postpartum Hemorrhage: Systematic Review of Controlled Observational Studies.Journal of child and adolescent psychopharmacology · 2024Pooled it
- Estimating the incidence and risk factors of postpartum hemorrhage from the national ENACT network.npj health systems · 2026Article
- Pregnancy Outcomes Associated With Anemia in the First Trimester and Anemia Resolution by Late Pregnancy.Obstetrics and gynecology · 2026Article
- Postpartum hemorrhage after SARS-CoV-2 infection in pregnancy: A Scandinavian register-based cohort study.Acta obstetricia et gynecologica Scandinavica · 2025Article
- Estimating the incidence and risk factors of postpartum hemorrhage from the national ENACT network.Research square · 2025Article
- The relationship between crowding in the delivery ward and the risk of postpartum hemorrhage.Acta obstetricia et gynecologica Scandinavica · 2025Article
- Prophylactic Aspirin Dose and Preeclampsia.JAMA network open · 2025Article
- Association between uterine artery embolization for postpartum hemorrhage and second delivery on maternal and offspring outcomes: a nationwide cohort study.Human reproduction open · 2024Article
- A step towards better audit: The Robson Ten Group classification system for outcomes other than cesarean section.Acta obstetricia et gynecologica Scandinavica · 2022Article
- Accuracy of postpartum hemorrhage coding in the Swedish Pregnancy Register.Acta obstetricia et gynecologica Scandinavica · 2021Article
- The association between postpartum hemorrhage and postpartum depression: A Swedish national register-based study.PloS one · 2021Article
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5 authors.
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Abstract
introductionPostpartum hemorrhage (PPH) is recognized as a leading cause of obstetric morbidity and mortality. Population-wide studies have used International Classification of Diseases (ICD) diagnostic codes to track and report the prevalence of PPH. Although the 10th revision (ICD-10) was introduced in Sweden in 1997, the accuracy of ICD-10 codes for PPH is not known. Thus, the aim was to determine the accuracy of diagnostic coding for PPH in the Swedish Pregnancy Register. MATERIAL AND
methodsWe performed a retrospective cohort study of 609 807 deliveries in Sweden between 2014 and 2019. Information on ICD-10 codes for PPH and estimated blood loss were extracted from the Swedish Pregnancy Register. Using an estimated blood loss >1000 mL as the reference standard, we evaluated the diagnostic accuracy of ICD-10 codes for PPH by estimating sensitivity, specificity, positive predictive value and negative predictive value with exact binomial 95% confidence intervals (CIs). In our secondary analysis, we assessed the ICD-10 coding accuracy for severe PPH, defined as an estimated blood loss >1000 mL and transfusion of at least 1 unit of red blood cells registered in the Scandinavian Donations and Transfusion database.
resultsOf the 609 807 deliveries, 43 312 (7.1%) had an ICD-10 code for PPH and 45 071 (7.4%) had an estimated blood loss >1000 mL. The ICD codes had a sensitivity of 88.5% (95% CI 88.2-88.7), specificity of 99.4% (95% CI 99.4-99.4), positive predictive value of 92.0% (95% CI 91.8-92.3) and negative predictive value of 99.1% (95% CI 99.1-99.1). In our secondary analysis, on deliveries with severe PPH, the sensitivity for an ICD code was 91.3% (95% CI 90.7-91.9), whereas specificity was 83.5% (95% CI 82.3-84.6).
conclusionsOur findings indicate that ICD-10 codes for PPH in Sweden have moderately high sensitivity and excellent specificity. These results suggest that PPH diagnostic codes in medical records and linked pregnancy and birth registers can be used for research, quality improvement and reporting PPH prevalence in Sweden.
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