Gastrointestinal Bleeding Algorithm Defined in "Testing Routine Querying Tools with Known Positive Exposure-Outcome Associations: Gastrointestinal (GI) Bleeding Following New Use of Warfarin Compared with Statins"

This report lists International Classification of Diseases, Ninth Edition, Clinical Modification (ICD-9-CM) diagnosis codes and algorithms used to define gastrointestinal bleeding in this request.

For additional information about the algorithm and how it was defined relative to the cohort and exposures of interest in the inferential analysis, see the Modular Program report here.