| Naics index | Naics index description |
|---|---|
| 813920 | Dietitians' associations |
| 813920 | Educators' associations |
| 813920 | Engineers' associations |
| 813920 | Health professionals' associations |
| 813920 | Hospital administrators' associations |
| 813920 | Learned societies |
| 813920 | Medical associations |
| 813920 | Nurses' associations |
| 813920 | Occupational therapists' associations |
| 813920 | Optometrists' associations |