| Abbreviation | Definition |
|---|---|
| NSCA | National Sentinel Clinical Audit |
| NSCG | National Specialised Commissioning Group |
| NSFOP | National Service Framework for Older People |
| NSS | National Services Scotland |
| NSS | nephron-sparing surgery |
| NSS | neurologic severity score |
| NSS | nutrition support services |
| NSU | Neurosurgical unit |
| NSU | Nonspecific urethritis |
| NTBR | Not To Be Resucitated |
| NTN | National Training Number |
| NTN | nephrotoxic nephritis |
| NTNbottleneckXX | National Training Number bottleneck (NTN bottleneck) |
| NTNCWS | nontransient noncommunity water systems |
| NTTRL | National Tissue Typing Reference Laboratory |
| NUG | National Users Group |
| NUG | necrotising ulcerative gingivitis |
| NVH | Non visible haematuria |
| NVP | nausea and vomiting in pregnancy |
| NVP | newly vulnerable person |