Skip to main content

Table 1 Hypertension case ascertainment algorithms from administrative health records (AHRs) and electronic medical records (EMRs)

From: Combining population-based administrative health records and electronic medical records for disease surveillance

Data source

Contact frequency, source and duration

ICD 9-CM/10-CA diagnosis codes

ATC medication codes

AHR

1 + H or 2 + P in 2 years

ICD-9-CM: 401–405 ICD-10-CA: I10-I13, I15

 

EMR

(2 + P in 2 years) or 1 + PL or 1 + Rx ever

ICD-9-CM: 401–405

C07AB04, C09XA02, C03DB01, C08CA01, C07AB03, C07CB03, C09AA07, C09AA01, C07AG02, C03BA04, C09AA08, C09AA02, C09BA02, C09CA02, C09DA02, C08CA02, C09AA09,C03AA03, C03EA01, C03BA11, C09CA04, C09DA04, C09AA03, C09BA03, C09DA01, C02LB01, C03BA08, C09CA07, C07AA06, C09AA10, C03DB02, C09CA03, C08DA01

  1. H Hospital discharge abstract, P Physician billing claim, PL Problem list, Rx Drug codes; ICD-9-CM/10-CA International Classification of Diseases, 9th Revision, Clinical Modification and 10th version of the Canadian version, ATC Anatomic Therapeutic Chemical classification system
Back to article page

BMC Medical Informatics and Decision Making

ISSN: 1472-6947

Contact us