Utility of ICD codes for stress cardiomyopathy in hospital administrative databases: What do they signify?

Anusha G. Bhat, Kevin White, Kyle Gobeil, Tara Lagu, Peter K. Lindenauer, Quinn R. Pack*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Prior studies of stress cardiomyopathy (SCM) have used International Classification of Diseases (ICD) codes to identify patients in administrative databases without evaluating the validity of these codes. Between 2010 and 2016, we identified 592 patients discharged with a first known principal or secondary ICD code for SCM in our medical system. On chart review, 580 charts had a diagnosis of SCM (positive predictive value 98%; 95% CI: 96.4-98.8), although 38 (6.4%) did not have active clinical manifestations of SCM during the hospitalization. Moreover, only 66.8% underwent cardiac catheterization and 91.5% underwent echocardiography. These findings suggest that, although all but a few hospitalized patients with an ICD code for SCM had a diagnosis of SCM, some of these were chronic cases, and numerous patients with a new diagnosis of SCM did not undergo a complete diagnostic workup. Researchers should be mindful of these limitations in future studies involving administrative databases.

Original languageEnglish (US)
Pages (from-to)160-163
Number of pages4
JournalJournal of hospital medicine
Volume15
Issue number3
DOIs
StatePublished - Mar 2020
Externally publishedYes

ASJC Scopus subject areas

  • Leadership and Management
  • Internal Medicine
  • Fundamentals and skills
  • Health Policy
  • Care Planning
  • Assessment and Diagnosis

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