Study design We determined the accuracy of various combinations of diagnostic, procedural, and billing codes using the chart-abstracted diagnoses of patients of the Children's Hospital of Eastern Ontario as the reference standard. We selected an algorithm that maximized positive predictive value while ...
We identified physicians who provided direct acute care in the ED or inpatient setting for patients with suspected or confirmed COVID-19 using physician billing location and diagnostic codes (DX COVID). Residents and fellows do not submit billing claims and were excluded from this analysis. We ...
The total number of vaccine doses for all included cases and controls from April 1, 1992 to March 31, 2015 was 33,716 using immunization billing codes (Supplementary Table S1). The majority, 96%, of immunization codes were G538 (“immunization with visit”) or G359 (“immunization only”...
23 This system uses inpatient and ambulatory health care data to identify medical conditions and assigns an ADG value based on the duration, severity, and causative mechanism of the condition; diagnostic certainty and specialty care involvement; and American Society of Anesthesiologists (ASA) physical ...
(EPS) within administrative data.Methods:Algorithms consisting of physician procedural billing codes and their associated most responsible hospital diagnosis codes were used to identify potential AF, AFL, SVT catheter ablation procedures and diagnostic EPS within large administrative databases in Ontario, ...
Methods Patch testing billing data submitted to the OHIP between 1992 and 2014 were analysed. Two patch test billing codes were investigated: one for work‐related testing (G198), and one for non‐work‐related testing (G206). Rates of patch testing overall were calculated, and trends over ...