| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 541990 | 541990 | 541990 | Appraisal (except real estate) services | |||
| 541990 | 541990 | 541990 | Arbitration and conciliation services (except by attorney, paralegal) | |||
| 541990 | 541990 | 541990 | Business brokers (except real estate brokers) | |||
| 541990 | 541990 | 541990 | Commodity inspection services | |||
| 541990 | 541990 | 541990 | Construction estimation services | |||
| 541990 | 541990 | 541990 | Consumer credit counseling services | |||
| 541990 | 541990 | 541990 | Credit repair (i.e., counseling) services, consumer | |||
| 541990 | 541990 | 541990 | Electronic communication content verification services | |||
| 541990 | 541990 | 541990 | Estate assessment (i.e., appraisal) services | |||
| 541990 | 541990 | 541990 | Fire extinguisher testing and/or inspection, without sales, service, or installation | |||
| 541990 | 541990 | 541990 | Handwriting analysis services | |||
| 541990 | 541990 | 541990 | Handwriting expert services | |||
| 541990 | 541990 | 541990 | Marine forecasting services | |||
| 541990 | 541990 | 541990 | Marine surveyor (i.e., ship appraiser) services | |||
| 541990 | 541990 | 541990 | Mediation product services (except by lawyer, attorney, paralegal offices, family and social services) | |||
| 541990 | 541990 | 541990 | Meteorological services | |||
| 541990 | 541990 | 541990 | Patent broker services (i.e., patent marketing services) | |||
| 541990 | 541990 | 541990 | Patrolling (i.e., visual inspection) of electric transmission or gas lines | |||
| 541990 | 541990 | 541990 | Pipeline inspection (i.e., visual) services | |||
| 541990 | 541990 | 541990 | Power line inspection (i.e., visual) services | |||
| 541990 | 541990 | 541990 | Quantity surveyor services | |||
| 541990 | 541990 | 541990 | Waterless fire suppression system testing and/or inspection, without sales, service, or installation | |||
| 541990 | 541990 | 541990 | Weather forecasting services |