| 61142 | Instruments, musical, wholesale trade services of, except on a fee or contract basis | |
| 61242 | Instruments, musical, wholesale trade services of, on a fee or contract basis | |
| 87154 | Instruments, navigation, maintenance and repair of | |
| 86570 | Instruments, optical, installation of | |
| 87154 | Instruments, optical, repair of | |
| 62374 | Instruments, orthopaedic, mail order retail trade services of | |
| 62174 | Instruments, orthopaedic, non-specialized store retail trade services of | |
| 62474 | Instruments, orthopaedic, other non-store retail trade services of | |
| 62574 | Instruments, orthopaedic, retail trade services of, on a fee or contract basis | |
| 62274 | Instruments, orthopaedic, specialized store retail trade services of | |
| 61174 | Instruments, orthopaedic, wholesale trade services of, except on a fee or contract basis | |
| 61274 | Instruments, orthopaedic, wholesale trade services of, on a fee or contract basis | |
| 86570 | Instruments, precision, installation of | |
| 87154 | Instruments, precision, repair of | |
| 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 | |
| 87154 | Instruments, testing, maintenance and repair of | |
| 54650 | Insulation services | |
| 54650 | Insulation services, sound | |
| 54650 | Insulation services, thermal | |
| 93122 | Insulin therapy treatment in out-patient 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 | |
| 71690 | Insurance consultancy services | |
| 71690 | Insurance funds, administration of | |
| 71334 | Insurance of aircraft owned by individuals | |
| 71334 | Insurance of vessels owned by individuals | |
| 71320 | Insurance policies, accident, underwriting of | |