- History of any of the following types of PH: Group 1 (PAH); Group 1 (pulmonary veno-occlusive disease and/or pulmonary capillary hemangiomatosis); Group 2 (left-heart disease); Group 3 (due to conditions other than interstitial lung disease, including chronic obstructive pulmonary disease [COPD], sleep-disordered breathing, alveolar hypoventilation, high altitude, or developmental abnormalities); Group 4 (chronic thromboembolic pulmonary hypertension); Group 5 (other disorders)