| RHD | radiological health data; relative hepatic dullness; renal hypertensive disease; rheumatic heart dis... |
|---|---|
| SCD | scleroderma; service-connected disability; sickle-cell disease; spinocerebellar degeneration; subacu... |
| SMCD | senile macular choroidal degeneration; systemic mast cell disease; systemic meningococcal disease |
| URD | unspecified respiratory disease; upper respiratory disease |
| VD | vapor density; vascular disease; vasodilation, vasodilator; venereal disease; venous dilatation; ven... |