• Patient gives voluntary written informed consent to participate in the study and are capable of reading and understanding questionnaires or forms in English or Spanish.

• Patients with a diagnosis of ILD based on computed tomography imaging, including:

‣ Idiopathic interstitial pneumonia, including idiopathic pulmonary fibrosis

⁃ Connective tissue disease-associated ILD with forced vital capacity (FVC) \<70%

⁃ Hypersensitivity pneumonitis

⁃ Scleroderma-related ILD

⁃ Autoimmune ILD

⁃ Nonspecific interstitial pneumonia

⁃ Occupational lung disease

⁃ Combined pulmonary fibrosis and emphysema with mild emphysema on lung imaging as determined by the Investigator

• Patients must have at least 2 signs or symptoms suggestive of PH, as specified by the study protocol.