Table 1

Estimated positive predictive values (PPVs) for ICD-10-CM codes O9A

No of recordsEstimated PPV, % (95% CI)
All cases (n=157)
 Confirmed injury12579.6 (73.3 to 85.9)
 Confirmed injury complicating PCP11372.0 (65.0 to 79.0)
Inpatient discharge data (n=73)
 Primary diagnosis (n=43)
 Confirmed injury3990.7 (82.0 to 99.4)
 Confirmed injury complicating PCP3888.4 (78.4 to 98.4)
 Secondary diagnosis (n=30)
 Confirmed injury620.0 (4.8 to 35.2)
 Confirmed injury complicating PCP723.3 (7.3 to 39.4)
 Confirmed injury4561.6 (50.2 to 73.1)
 Confirmed injury complicating PCP4561.6 (50.2 to 73.1)
Emergency department discharge data (n=84)
 Confirmed injury8095.2 (90.6 to 99.9)
 Confirmed injury complicating PCP6881.0 (72.4 to 89.5)
  • 2-O9A.4 to capture injuries and injuries complicating PCP, in an electronic health record case confirmation study in a Kentucky healthcare system, October 2015 to December 2017.

  • ICD-10-CM, International Classification of Diseases, 10th Revision, Clinical Modification; PCP, pregnancy, childbirth and the puerperium.