Idiopathic interstitial pneumonia

Idiopathic interstitial pneumonia, abbreviated IIP, is a class of diffuse lung diseases that typically affect the pulmonary interstitium, the supporting tissue of the lung, although some members of the group also involve the airways; cryptogenic organizing pneumonitis is the example named by the ontology. The word idiopathic marks that no underlying cause has been established. The group is also indexed under the names idiopathic fibrosing alveolitis, idiopathic interstitial pneumonitis and noninfectious pneumonia. Reference systems classify it under ICD-10-CM code J84.11, MeSH descriptor D054988 and Orphanet entry 98300, which places it among the diseases of the respiratory system. This entry records the class as the ontology defines it and gives no clinical guidance.