Polypharmacy codelist creation

Author: Monica Iyer
Last updated: May 14, 2026
Data source: CPRD Aurum

Variable created as part of eFI2
BNF chapters given as part of eFI2 documentation

Used BNF chapters in March 2026 aurum product codebrowswer

polypharmacy_codelist has bnf chapters
polypharmacy_prodcodes has all associated prodcodeids when searching for the bnf chapters