| 48150 | Instruments, prophylactic (excl. electromedical apparatus) | |
| 48150 | Instruments, prostatectomy | |
| 48150 | Instruments, surgical (incl. veterinary) | |
| 62374 | Instruments, surgical, mail order retail trade services of | |
| 62174 | Instruments, surgical, non-specialized store retail trade services of | |
| 62474 | Instruments, surgical, other non-store retail trade services of | |
| 62574 | Instruments, surgical, retail trade services of, on a fee or contract basis | |
| 62274 | Instruments, surgical, specialized store retail trade services of | |
| 61174 | Instruments, surgical, wholesale trade services of, except on a fee or contract basis | |
| 61274 | Instruments, surgical, wholesale trade services of, on a fee or contract basis | |
| 48212 | Instruments, surveying (excl. compasses) | |
| 87154 | Instruments, testing, maintenance and repair of | |
| 48212 | Instruments, topographic | |
| 48150 | Instruments, tracheotomy | |
| 48130 | Insufflators, dental | |
| 48150 | Insufflators, medical | |
| 46940 | Insulating fittings (excl. insulators), of any insulating material (excl. ceramics and plastics), for electrical machines, appliances or equipment | |
| 37292 | Insulating fittings (excl. insulators), of ceramic materials, for electrical machines, appliances and equipment | |
| 36980 | Insulating fittings (excl. insulators), of plastic material, for electrical machines, appliances or equipment | |
| 44917 | Insulating machines for electric cable (excl. gimping machines) | |
| 37920 | Insulation material (heat- or sound-), of asbestos | |
| 54650 | Insulation services | |
| 54650 | Insulation services, sound | |
| 54650 | Insulation services, thermal | |
| 37990 | Insulation, pipe, of rock-wool | |
| 46940 | Insulators, electrical, of any material other than glass or ceramics | |
| 37292 | Insulators, electrical, of ceramic material (i.e., porcelain, steatite) | |
| 37197 | Insulators, electrical, of glass | |
| 35250 | Insulin and its salts, not put up as medicaments | |
| 35260 | Insulin and its salts, put up as medicaments, containing neither antibiotics nor derivatives thereof, in measured doses or in forms or packings for retail sale | |
| 93122 | Insulin therapy treatment in outpatient clinics | |
| 71610 | Insurance agencies, services of | |
| 71690 | Insurance and pensions, other services auxiliary to | |
| 71610 | Insurance brokerage and agency services | |
| 71620 | Insurance claims adjustment services | |
| 71620 | Insurance claims, adjustment of | |
| 71620 | Insurance claims, authorizing payment of | |
| 71620 | Insurance claims, examination of | |
| 71620 | Insurance claims, investigation of | |
| 71620 | Insurance claims, negotiating settlements of | |