| Major idiopathic interstitial pneumonias |
| Idiopathic pulmonary fibrosis |
| Idiopathic nonspecific interstitial pneumonia |
| Respiratory bronchiolitis-interstitial lung disease |
| Desquamative interstitial pneumonia |
| Cryptogenic organising pneumonia |
| Acute interstitial pneumonia |
| Rare idiopathic interstitial pneumonias |
| Idiopathic lymphoid interstitial pneumonia |
| Idiopathic pleuroparenchymal fibroelastosis |
| Unclassifiable idiopathic interstitial pneumonias |