| 19910-9 | Diffusion capacity.carbon monoxide Predicted |
| 19911-7 | Diffusion capacity.carbon monoxide |
| 19912-5 | Diffusion capacity.carbon monoxide adjusted for hemoglobin (helium single breath) |
| 19913-3 | Diffusion capacity.carbon monoxide adjusted for hemoglobin |
| 19917-4 | Diffusion capacity adjusted to body conditions (single breath.carbon monoxide+helium) |
| 19918-2 | Diffusion capacity adjusted to body conditions |
| 76525-5 | Thoracic fluid conductivity Chest |
| 98091-2 | Diffusion capacity.carbon monoxide --pre bronchodilation |
| 98092-0 | Diffusion capacity.carbon monoxide --post bronchodilation |