| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 541940 | 541940 | 541940 | Animal hospitals | |||
| 541940 | 541940 | 541940 | Disease testing services, veterinary | |||
| 541940 | 541940 | 541940 | Hospitals, animal | |||
| 541940 | 541940 | 541940 | Internists' offices, veterinary | |||
| 541940 | 541940 | 541940 | Laboratory testing services, veterinary | |||
| 541940 | 541940 | 541940 | Livestock inspecting and testing services, veterinary | |||
| 541940 | 541940 | 541940 | Livestock veterinary services | |||
| 541940 | 541940 | 541940 | Pet hospitals | |||
| 541940 | 541940 | 541940 | Small animal veterinary services | |||
| 541940 | 541940 | 541940 | Surgeons' offices, veterinary | |||
| 541940 | 541940 | 541940 | Surgery services, veterinary | |||
| 541940 | 541940 | 541940 | Testing laboratories, veterinary | |||
| 541940 | 541940 | 541940 | Testing services for veterinarians | |||
| 541940 | 541940 | 541940 | Vaccination services, veterinary | |||
| 541940 | 541940 | 541940 | Veterinarians' offices | |||
| 541940 | 541940 | 541940 | Veterinarians' practices | |||
| 541940 | 541940 | 541940 | Veterinary clinics | |||
| 541940 | 541940 | 541940 | Veterinary services | |||
| 541940 | 541940 | 541940 | Veterinary services, livestock | |||
| 541940 | 541940 | 541940 | Veterinary services, pets and other animal specialties | |||
| 541940 | 541940 | 541940 | Veterinary testing laboratories |