| 19925-7 | FEV1/FVC Predicted |
| 19926-5 | FEV1/FVC |
| 59131-3 | Atrium Left atrium volume/Right atrium volume (us) |
| 60870-3 | Physiological dead space/Tidal volume Respiratory system --on ventilator |
| 65657-9 | FEV1/predicted |
| 65658-7 | FEV1/FEV6 Predicted |
| 69970-2 | FEV1/FVC --post bronchodilation |
| 75991-0 | Oxygen extraction ratio |
| 76002-5 | Physiological dead space/Tidal volume Respiratory system |
| 76269-0 | Respiratory quotient Respiratory system |
| 76274-0 | Ventilation-perfusion index Respiratory system |
| 82652-9 | Transient ischemic dilation Left ventricle SPECT |
| 8742-9 | Pulmonary blood flow/Systemic blood flow (us.doppler) |
| 8743-7 | Pulmonary blood flow/Systemic blood flow (imaging) |
| 8744-5 | Pulmonary blood flow/Systemic blood flow (oximetry) |
| 94119-5 | Expired minute volume/Carbon dioxide production during exercise |
| 94126-0 | Ventilatory equivalent for carbon dioxide --W exercise |