Schein OD, Katz J, Bass EB, et al; Study of Medical Testing for Cataract Surgery. The value of routine preoperative medical testing before cataract surgery. N Engl J Med. 2000;342(3):168-175. doi:10.1056/NEJM200001203420304PubMedGoogle ScholarCrossref 19. Keay L, Lindsley K, Tielsch J...
The medical data include the diagnoses coded according to the International Classification of Diseases, 10th Revision, and all procedures performed coded using the International Classification of Diseases, 9th Revision (ICD-9) procedure codes and unique NFZ codes corresponding to certain hospital ...