Should diagnosis codes from emergency department data be used for case selection for emergency department key performance indicators?

Should diagnosis codes from emergency department data be used for case selection for emergency department key performance indicators? Aust Health Rev. 2013 Dec 6; Authors: Howell SC, Wills RA, Johnston TC PMID: 24308873 [PubMed - as supplied by publisher]
Source: Australian Health Review - Category: Hospital Management Authors: Tags: Aust Health Rev Source Type: research