International Classification of Radiographs of the Pneumoconioses

In·ter·na·tion·al Clas·si·fi·ca·tion of Radiographs of the Pneumoconioses

a system for qualitative and semiquantitative description of the chest radiographic findings caused by pneumoconiosis, designed for epidemiologic studies; supersedes classifications of 1950, 1958, 1968, and 1971.