Description
Expert Witness

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
541199 – All Other Legal Services
541990 – All Other Professional, Scientific, and Technical Services
541690 – Other Scientific and Technical Consulting Services
541611 – Administrative Management and General Management Consulting Services
541930 – Translation and Interpretation Services
621112 – Offices of Physicians, Mental Health Specialists
541618 – Other Management Consulting Services
541330 – Engineering Services
531320 – Offices of Real Estate Appraisers

Description
Medical/Psychiatric Consultation Services

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
621112 – Offices of Physicians, Mental Health Specialists
622110 – General Medical and Surgical Hospitals
621330 – Offices of Mental Health Practitioners (except Physicians)
561320 – Temporary Help Services
611430 – Professional and Management Development Training

Description
Other Medical Services

Possible NAICS Codes
561320 – Temporary Help Services
622110 – General Medical and Surgical Hospitals
621111 – Offices of Physicians (except Mental Health Specialists)
621999 – All Other Miscellaneous Ambulatory Health Care Services
621399 – Offices of All Other Miscellaneous Health Practitioners
621910 – Ambulance Services
532283 – Home Health Equipment Rental
621498 – All Other Outpatient Care Centers
621610 – Home Health Care Services
621991 – Blood and Organ Banks

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)
621999 – All Other Miscellaneous Ambulatory Health Care Services
621399 – Offices of All Other Miscellaneous Health Practitioners
621610 – Home Health Care Services
541990 – All Other Professional, Scientific, and Technical Services
621511 – Medical Laboratories
524114 – Direct Health and Medical Insurance Carriers

Description
Radiology Services

Possible NAICS Codes
621512 – Diagnostic Imaging Centers
561320 – Temporary Help Services
621111 – Offices of Physicians (except Mental Health Specialists)
334519 – Other Measuring and Controlling Device Manufacturing
541512 – Computer Systems Design Services
622110 – General Medical and Surgical Hospitals
611310 – Colleges, Universities, and Professional Schools
621999 – All Other Miscellaneous Ambulatory Health Care Services
621399 – Offices of All Other Miscellaneous Health Practitioners
541990 – All Other Professional, Scientific, and Technical Services

Description
Evaluation and Screening

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
621511 – Medical Laboratories
621498 – All Other Outpatient Care Centers
621999 – All Other Miscellaneous Ambulatory Health Care Services
621340 – Offices of Physical, Occupational and Speech Therapists, and Audiologists
561320 – Temporary Help Services
621399 – Offices of All Other Miscellaneous Health Practitioners
621330 – Offices of Mental Health Practitioners (except Physicians)
621610 – Home Health Care Services
621491 – HMO Medical Centers

Description
Internal Medicine Services

Possible NAICS Codes
561320 – Temporary Help Services
621111 – Offices of Physicians (except Mental Health Specialists)
622110 – General Medical and Surgical Hospitals
611310 – Colleges, Universities, and Professional Schools
621112 – Offices of Physicians, Mental Health Specialists
621492 – Kidney Dialysis Centers
541990 – All Other Professional, Scientific, and Technical Services
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers

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
721110 – Hotels (except Casino Hotels) and Motels
711510 – Independent Artists, Writers, and Performers
541330 – Engineering Services
541690 – Other Scientific and Technical Consulting Services
611430 – Professional and Management Development Training
541519 – Other Computer Related Services
561320 – Temporary Help Services

Description
Laboratory Testing Services

Possible NAICS Codes
621511 – Medical Laboratories
541380 – Testing Laboratories and Services
334516 – Analytical Laboratory Instrument Manufacturing
561320 – Temporary Help Services
541714 – Research and Development in Biotechnology (except Nanobiotechnology)
541990 – All Other Professional, Scientific, and Technical Services
325413 – In-Vitro Diagnostic Substance Manufacturing
541713 – Research and Development in Nanotechnology
621111 – Offices of Physicians (except Mental Health Specialists)
325414 – Biological Product (except Diagnostic) Manufacturing

Description
Cardio-Vascular Services

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
611310 – Colleges, Universities, and Professional Schools
561320 – Temporary Help Services
621999 – All Other Miscellaneous Ambulatory Health Care Services
622110 – General Medical and Surgical Hospitals
621399 – Offices of All Other Miscellaneous Health Practitioners
621511 – Medical Laboratories
621512 – Diagnostic Imaging Centers
334510 – Electromedical and Electrotherapeutic Apparatus Manufacturing
339112 – Surgical and Medical Instrument Manufacturing

Description
Surgery Services

Possible NAICS Codes
622110 – General Medical and Surgical Hospitals
611310 – Colleges, Universities, and Professional Schools
621111 – Offices of Physicians (except Mental Health Specialists)
561320 – Temporary Help Services
621999 – All Other Miscellaneous Ambulatory Health Care Services
621991 – Blood and Organ Banks
334510 – Electromedical and Electrotherapeutic Apparatus Manufacturing
621399 – Offices of All Other Miscellaneous Health Practitioners
339113 – Surgical Appliance and Supplies Manufacturing
541990 – All Other Professional, Scientific, and Technical Services

Description
Ophthalmology Services

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
611310 – Colleges, Universities, and Professional Schools
622110 – General Medical and Surgical Hospitals
621320 – Offices of Optometrists
339115 – Ophthalmic Goods Manufacturing
561320 – Temporary Help Services
334510 – Electromedical and Electrotherapeutic Apparatus Manufacturing

Description
Orthopedic Services

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
611310 – Colleges, Universities, and Professional Schools
561320 – Temporary Help Services
621493 – Freestanding Ambulatory Surgical and Emergency Centers
339113 – Surgical Appliance and Supplies Manufacturing
622110 – General Medical and Surgical Hospitals
621399 – Offices of All Other Miscellaneous Health Practitioners
621340 – Offices of Physical, Occupational and Speech Therapists, and Audiologists
622310 – Specialty (except Psychiatric and Substance Abuse) Hospitals
811210 – Electronic and Precision Equipment Repair and Maintenance

Description
Pathology Services

Possible NAICS Codes
621511 – Medical Laboratories
621111 – Offices of Physicians (except Mental Health Specialists)
561320 – Temporary Help Services
621991 – Blood and Organ Banks
334516 – Analytical Laboratory Instrument Manufacturing
611310 – Colleges, Universities, and Professional Schools
325413 – In-Vitro Diagnostic Substance Manufacturing
622110 – General Medical and Surgical Hospitals
621399 – Offices of All Other Miscellaneous Health Practitioners
621999 – All Other Miscellaneous Ambulatory Health Care Services

Description
Neurology Services

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
611310 – Colleges, Universities, and Professional Schools
622110 – General Medical and Surgical Hospitals
621999 – All Other Miscellaneous Ambulatory Health Care Services
621399 – Offices of All Other Miscellaneous Health Practitioners
561320 – Temporary Help Services
334510 – Electromedical and Electrotherapeutic Apparatus Manufacturing
339112 – Surgical and Medical Instrument Manufacturing
811210 – Electronic and Precision Equipment Repair and Maintenance