Annals of the American Thoracic Society • Vol 14 • No 6
Code-based Diagnostic Algorithms for Idiopathic Pulmonary Fibrosis. Case Validation and Improvement
March 2017 • Brett Ley, Thomas H. Urbania, Gail Husson, Eric Vittinghoff, David R. Brush, Mark D. Eisner, Carlos Iribarren, Harold R. Collard
A well-accepted International Classification of Diseases, Ninth Revision, code-based IPF algorithm performs poorly, falsely classifying many non-IPF cases as IPF and missing a substantial proportion of IPF cases. A modification of the IPF algorithm may be useful for future population-based studies of IPF.