| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability;... |
|---|---|
| P&T | permanent and total [disability]; pharmacy and therapeutics |
| PTD | percutaneous transluminal dilatation; permanent total disability; personality trait disorder; preter... |
| RDRS | rapid disability rating scale |
| SCD | scleroderma; service-connected disability; sickle-cell disease; spinocerebellar degeneration; subacu... |