| PSC | Description
|
| R111 | Bldgs & fac / admin & svc bldgs |
| R112 | Bldgs & fac / airfield & msl fac |
| R113 | Bldgs & fac / educational bldgs |
| R114 | Bldgs & fac / hospital buildings |
| R115 | Bldgs & fac / industrial bldgs |
| R116 | Bldgs & fac / residential bldgs |
| R117 | Bldgs & fac / warehouse bldgs |
| R118 | Bldgs & fac / R&D facilities |
| R119 | Bldgs & fac / other buildings |
| R121 | Non-bldg / conservation & dev |
| R122 | Non-bldg / hwys-roads-bridges |
| R123 | Non-bldg / electric power genr |
| R124 | Non-bldg / utilities |
| R129 | Non-bldg / other |
| R211 | A/E - non contruct - general |
| R212 | A/E - drafting engineering |
| R213 | A/E - inspect - non contruct |
| R214 | A/E - management engineering |
| R215 | A/E - production engineering |
| R216 | A/E - marine engineering |
| R219 | Other architects & engin gen |
| R301 | Adp facility management |
| R302 | Adp systems develop & programming |
| R303 | Adp svcs/data entry |
| R304 | Adp svcs/data transmission |
| R305 | Adp teleprocessing svcs |
| R306 | Adp system analysis |
| R307 | Automated information system svcs |
| R399 | Other adp svcs |
| R404 | Prof svcs/land surveys - cadastral |
| R405 | Prof svcs/operations research |
| R406 | Prof svcs/policy review - develop |
| R407 | Prof svcs/program evaluation |
| R408 | Prof svcs/program management-suppor |
| R409 | Prof svcs/program review-develop |
| R411 | Prof svcs/real property appraisals |
| R412 | Prof svcs/simulations |
| R413 | Prof svcs/specifications develop |
| R414 | Prof svcs/systems engineering |
| R415 | Prof svcs/tech sharing-util |
| R416 | Prof svcs/vet/animal care |
| R418 | Prof svcs/legal services |
| R419 | Prof svcs/educational services |
| R420 | Prof svcs/certifications & accredit |
| R421 | Prof svcs/technical assistance |
| R422 | Prof svcs/phone and field interview |
| R423 | Prof svcs/intelligence services |
| R424 | Prof svcs/expert witnesses |
| R425 | Prof svcs/engineering technical |
| R426 | Prof svcs/communications services |
| R427 | Prof svcs/weather rpt-observ |
| R428 | Prof svcs/industrial hygienics |
| R497 | Prof svcs/personal services |
| R498 | Other professional services |
| R499 | Othr professional svcs |
| R502 | Study/air quality |
| R503 | Study/archeological-paleontological |
| R504 | Study/chemical-biological |
| R505 | Study/cost benefit |
| R506 | Study/data - other than scientific |
| R507 | Study/economic/socio-eco and labor |
| R509 | Study/endangered species-plant/anim |
| R510 | Study/environmental assessments |
| R511 | Study/environmental baseline |
| R512 | Study/environmental impact |
| R513 | Study/feasibility - non-contruct |
| R516 | Study/fisheries and animal |
| R517 | Study/geological |
| R518 | Study/geophysical |
| R519 | Study/geotechnical |
| R520 | Study/grazing-range use |
| R521 | Study/historical |
| R522 | Study/legal-litigation |
| R524 | Study/mathematical-statistical |
| R525 | Study/natural resource |
| R526 | Study/oceanological |
| R527 | Study/recreation |
| R528 | Study/regulatory |
| R529 | Study/scientific data |
| R530 | Study/seismological |
| R532 | Study/soils |
| R533 | Study/water quality |
| R534 | Study/wildlife |
| R537 | Study/medical and health |
| R538 | Study/intelligence |
| R539 | Study/aeronautic/space |
| R540 | Study/building technology |
| R541 | Study/defense |
| R542 | Study/educational |
| R543 | Study/energy |
| R544 | Study/technology |
| R545 | Study/housing and community develop |
| R546 | Study/security (physical & personal |
| R547 | Study/accounting/financial mgt |
| R548 | Study/trade issues |
| R549 | Study/foreign & nat'L security pol |
| R550 | Study/organization/admin/personnel |
| R551 | Study/mobilization/preparedness |
| R552 | Study/manpower |
| R553 | Study/communications |
| R554 | Study/acquisition policy/procedures |
| R599 | Other special study & analyses |
| R601 | Admin svcs/material management |
| R602 | Admin svcs/courier and messenger |
| R603 | Admin svcs/transcription |
| R604 | Admin svcs/mailing and distribution |
| R605 | Admin svcs/library services |
| R606 | Admin svcs/court reporting |
| R607 | Admin svcs/word processing/typing |
| R608 | Admin svcs/translation-sign languag |
| R609 | Admin svcs/stenographic services |
| R610 | Personal property management servic |
| R611 | Credit reporting |
| R612 | Information retrieval |
| R699 | Other administrative support svcs |
| R701 | Mgt svcs/advertising |
| R702 | Mgt svcs/data collection |
| R703 | Mgt svcs/acct & financial services |
| R704 | Mgt svcs/auditing services |
| R705 | Mgt svcs/debt collection |
| R706 | Mgt svcs/logistics support |
| R707 | Mgt svcs/contract & procurement sup |
| R708 | Mgt svcs/public relations |
| R709 | Ongoing audit operations support |
| R710 | Relocation services |
| R799 | Other management support services |