| STANDOUT | soft thresholding and depth cueing of unspecified techniques |
|---|---|
| URD | unspecified respiratory disease; upper respiratory disease |
| ON | occipitonuchal; office nurse; onlay; optic nerve; orthopedic nurse; osteonecrosis; osteonectin; over... |
| SONH | spontaneous osteonecrosis of the hip |
| SONK | spontaneous osteonecrosis of the knee |