Description
Orthopedic Services

Possible NAICS Codes
621111 – Offices of Physicians (except Mental Health Specialists)
611310 – Colleges, Universities, and Professional Schools
561320 – Temporary Help Services
339113 – Surgical Appliance and Supplies Manufacturing
622110 – General Medical and Surgical Hospitals
621493 – Freestanding Ambulatory Surgical and Emergency Centers
316210 – Footwear Manufacturing
621340 – Offices of Physical, Occupational and Speech Therapists, and Audiologists
621399 – Offices of All Other Miscellaneous Health Practitioners
622310 – Specialty (except Psychiatric and Substance Abuse) Hospitals

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

Description
Surgery Services

Possible NAICS Codes
611310 – Colleges, Universities, and Professional Schools
622110 – General Medical and Surgical Hospitals
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
339112 – Surgical and Medical Instrument Manufacturing
541990 – All Other Professional, Scientific, and Technical Services

Includes
Anesthesia Apparatus; Blood Transfusion Apparatus; Oxygen Therapy Apparatus; Respirators; Orthopedic Supplies; Arch Supports; Clinical Thermometers; Sutures; Hearing Aids; Veterinary Equipment, Endoscopes, Fiber Optic.

Excludes
Ophthalmic Instruments, Equipment, and Supplies; Non-Medical Endoscopes.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
339112 – Surgical and Medical Instrument Manufacturing
325411 – Medicinal and Botanical Manufacturing

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
621511 – Medical Laboratories

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
325412 – Pharmaceutical Preparation Manufacturing

Includes
Orthopedic Equipment; Operating Lights; Physiotherapy Equipment; Sterilizers; Wheel Chairs; Litters; Hospital Beds; Restraint Equipment.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
339112 – Surgical and Medical Instrument Manufacturing
331313 – Alumina Refining and Primary Aluminum Production

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

Includes
Semitrailers; Semitrailer Dollies; Cargo Trailers; Passenger and House Trailers; Special Purpose Trailers, such as Ammunition.

Excludes
Fire Fighting Trailers; Specially designed trailers for use in and around airfields, hangars, and warehouses.

Notes
This class includes only complete trailers, and chassis therefor. Any end items, assemblies, parts, attachments, or accessories, other than complete chassis, for use in or on trailers are classified in classes other than this class. The combined chassis and body of a special purpose trailer, such as a machine shop, mobile laundry, or dental laboratory, is classified in this class. The complete mobile unit, consisting of chassis, body, and additional equipment, as in an equipped trailer-mounted machine shop, is excluded from this class.

Possible NAICS Codes
336212 – Truck Trailer Manufacturing
336214 – Travel Trailer and Camper Manufacturing
333924 – Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
336211 – Motor Vehicle Body Manufacturing
336110 – Automobile and Light Duty Motor Vehicle Manufacturing
333120 – Construction Machinery Manufacturing
532120 – Truck, Utility Trailer, and RV (Recreational Vehicle) Rental and Leasing
336999 – All Other Transportation Equipment Manufacturing
441210 – Recreational Vehicle Dealers
321991 – Manufactured Home (Mobile Home) Manufacturing