Description
Other Professional Services

Possible NAICS Codes
493190 – Other Warehousing and Storage
541611 – Administrative Management and General Management Consulting Services
541990 – All Other Professional, Scientific, and Technical Services
541690 – Other Scientific and Technical Consulting Services
541330 – Engineering Services
711510 – Independent Artists, Writers, and Performers
541519 – Other Computer Related Services

Description
Contract, Procurement, and Acquisition Support Services

Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
541611 – Administrative Management and General Management Consulting Services
541519 – Other Computer Related Services
541330 – Engineering Services
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
611430 – Professional and Management Development Training

Description
Engineering and Technical Services

Includes
Includes: System Engineering, Technical Assistance and Other Services Used to Support the Program Office During the Acquisition Cycle

Excludes
Excludes: Language Translation and Sign Language Interpretation (PSC R608)

Possible NAICS Codes
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
541512 – Computer Systems Design Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541690 – Other Scientific and Technical Consulting Services
541620 – Environmental Consulting Services
336611 – Ship Building and Repairing
541519 – Other Computer Related Services
541611 – Administrative Management and General Management Consulting Services
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing

Description
Expert Witness

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
541199 – All Other Legal Services
541611 – Administrative Management and General Management Consulting Services
541990 – All Other Professional, Scientific, and Technical Services
541690 – Other Scientific and Technical Consulting Services
531320 – Offices of Real Estate Appraisers
541330 – Engineering Services
621112 – Offices of Physicians, Mental Health Specialists
541618 – Other Management Consulting Services

Description
Program Management/Support Services

Includes
Includes: Situations Where The Contractor is Solely Responsible for Program Management As Well As Situations Where the Contractor Provides Program Management Support to A Government Program Manager

Excludes
Excludes: Program Evaluations/Review/Dev(PSC R410); Contract/Procurement/Acquisition Support (PSC R707)

Possible NAICS Codes
541611 – Administrative Management and General Management Consulting Services
541330 – Engineering Services
541690 – Other Scientific and Technical Consulting Services
541990 – All Other Professional, Scientific, and Technical Services
541519 – Other Computer Related Services
541511 – Custom Computer Programming Services
541512 – Computer Systems Design Services
561210 – Facilities Support Services
541618 – Other Management Consulting Services
541620 – Environmental Consulting Services

Description
Defense Studies

Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
541330 – Engineering Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541611 – Administrative Management and General Management Consulting Services

Description
Personal Services Contracts

Possible NAICS Codes
812990 – All Other Personal Services
541990 – All Other Professional, Scientific, and Technical Services
928120 – International Affairs
541611 – Administrative Management and General Management Consulting Services
541519 – Other Computer Related Services
921190 – Other General Government Support
541690 – Other Scientific and Technical Consulting Services
561210 – Facilities Support Services
561320 – Temporary Help Services
561990 – All Other Support Services

Description
Legal Services

Includes
Includes: Attorney Services, Such as Testimony Preparation, Adjudication; Arbitration; Mediation

Excludes
Excludes: Environmental Legal Support (PSC F115), Expert Witness (PSC R424), Court Reporting (PSC R606)

Possible NAICS Codes
541199 – All Other Legal Services
541110 – Offices of Lawyers
541611 – Administrative Management and General Management Consulting Services
561611 – Investigation and Personal Background Check Services
541990 – All Other Professional, Scientific, and Technical Services
922130 – Legal Counsel and Prosecution
813311 – Human Rights Organizations
541191 – Title Abstract and Settlement Offices
561320 – Temporary Help Services
541519 – Other Computer Related Services

Description
Other Administrative Support Services

Possible NAICS Codes
541611 – Administrative Management and General Management Consulting Services
561110 – Office Administrative Services
561320 – Temporary Help Services
561210 – Facilities Support Services
541990 – All Other Professional, Scientific, and Technical Services
541330 – Engineering Services
541511 – Custom Computer Programming Services
561990 – All Other Support Services
541519 – Other Computer Related Services
622110 – General Medical and Surgical Hospitals

Description
Other Management Support Services

Possible NAICS Codes
541611 – Administrative Management and General Management Consulting Services
561320 – Temporary Help Services
561210 – Facilities Support Services
541519 – Other Computer Related Services
541990 – All Other Professional, Scientific, and Technical Services
541330 – Engineering Services
541511 – Custom Computer Programming Services
561990 – All Other Support Services
541618 – Other Management Consulting Services
541512 – Computer Systems Design Services

Description
Scientific Data Studies

Possible NAICS Codes
541380 – Testing Laboratories and Services
541990 – All Other Professional, Scientific, and Technical Services
541714 – Research and Development in Biotechnology (except Nanobiotechnology)
541690 – Other Scientific and Technical Consulting Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541620 – Environmental Consulting Services
541611 – Administrative Management and General Management Consulting Services
518210 – Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
611310 – Colleges, Universities, and Professional Schools
541360 – Geophysical Surveying and Mapping Services

Description
Other Special Studies and Analysis

Possible NAICS Codes
541611 – Administrative Management and General Management Consulting Services
541380 – Testing Laboratories and Services
541512 – Computer Systems Design Services
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
541620 – Environmental Consulting Services
541720 – Research and Development in the Social Sciences and Humanities
541690 – Other Scientific and Technical Consulting Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541511 – Custom Computer Programming Services

Description
Operations Research and Quantitative Analysis Services

Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
541611 – Administrative Management and General Management Consulting Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541720 – Research and Development in the Social Sciences and Humanities
541330 – Engineering Services
541690 – Other Scientific and Technical Consulting Services
541713 – Research and Development in Nanotechnology
541519 – Other Computer Related Services
541910 – Marketing Research and Public Opinion Polling
541380 – Testing Laboratories and Services

Excludes
Marking Machines, Laundry; Printing Machine, Labor, Printing Press, Label; Embossing Machines, Office Type; and Marking Machines, Office Type.

Notes
Marking machines which make permanent indentations in metal are classified in group 34.

Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
333517 – Machine Tool Manufacturing
333248 – All Other Industrial Machinery Manufacturing
332812 – Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
333519 – Rolling Mill and Other Metalworking Machinery Manufacturing
323111 – Commercial Printing (except Screen and Books)
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
339940 – Office Supplies (except Paper) Manufacturing
334111 – Electronic Computer Manufacturing

Description
General Health Care Services

Possible NAICS Codes
622110 – General Medical and Surgical Hospitals
561320 – Temporary Help Services
621498 – All Other Outpatient Care Centers
621111 – Offices of Physicians (except Mental Health Specialists)
524114 – Direct Health and Medical Insurance Carriers
541990 – All Other Professional, Scientific, and Technical Services
621511 – Medical Laboratories
621610 – Home Health Care Services
621999 – All Other Miscellaneous Ambulatory Health Care Services
621399 – Offices of All Other Miscellaneous Health Practitioners