Fig. 1From: Estimates of epidemiology, mortality and disease burden associated with progressive fibrosing interstitial lung disease in France (the PROGRESS study)Algorithms for the selection of cases of fibrosing ILD with progressive phenotype from the SNDS. a Overview of algorithms and case selection, b algorithm 1 for extraction of patients with fibrosing ILD, c algorithm 2 for extraction of patients with IPF from the fibrosing ILD group, and d algorithm 3 for extraction of patients with fibrosing ILD with a progressive phenotype from the fibrosing ILD group. 1For full list of ICD-10 codes and definitions see Additional file 1: Table S1. 2For full list of ICD-10 and ATC codes and definitions see Additional file 1: Table S2. 3For full list of CCAM, ATC, GHM, LLP and ICD-10 codes and definitions see Additional file 1: Table S3. ATC anatomical therapeutic chemical classification, CCAM classification commune des actes médicaux [medical classification for clinical procedures], CT computed tomography, GHM groupes homogènes de maladies [Homogeneous Group of Patients], HRCT high-resolution computed tomography, ICD-X International Classification of Diseases code, ILD interstitial lung disease, IPF idiopathic pulmonary fibrosis, LPP liste des produits et prestations [list of products and services], SNDS Système National des Données de Santé [French national administrative healthcare database], TNF tumour necrosis factor.Back to article page