North American Industry Classification System - NAICS

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Introduction to NAICS

The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.

NAICS was developed under the auspices of the Office of Management and Budget (OMB), and adopted in 1997 to replace the Standard Industrial Classification (SIC) system. It was developed jointly by the U.S. Economic Classification Policy Committee (ECPC), Statistics Canada, and Mexico's Instituto Nacional de Estadistica y Geografia, to allow for a high level of comparability in business statistics among the North American countries.

This official U.S. Government Web site provides the latest information on plans for NAICS revisions, as well as access to various NAICS reference files and tools. Additional information on the background and development of NAICS is available in the section of this Web site.

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T = Canadian, Mexican, and United States industries are comparable.

Search results for: 6219

Number of records found: 6

Other Ambulatory Health Care Services^T: This industry group comprises establishments primarily engaged in providing ambulatory health care services (except offices of physicians, dentists, and other health practitioners; outpatient care centers; medical laboratories and diagnostic imaging centers; and home health care providers).
Ambulance Services^T: See industry description for 621910.
Ambulance Services: This industry comprises establishments primarily engaged in providing transportation of patients by ground or air, along with medical care. These services are often provided during a medical emergency but are not restricted to emergencies. The vehicles are equipped with lifesaving equipment operated by medically trained personnel. Cross-References.
All Other Ambulatory Health Care Services^T: This industry comprises establishments primarily engaged in providing ambulatory health care services (except offices of physicians, dentists, and other health practitioners; outpatient care centers; medical and diagnostic laboratories; home health care providers; and ambulances). Illustrative Examples: Blood donor stations Pacemaker monitoring services Blood or body organ banks Physical fitness evaluation services (except by offices of health practitioners) Health screening services (except by offices of health practitioners) Smoking cessation programs Hearing testing services (except by offices of audiologists) Cross-References.
Blood and Organ Banks: This U.S. industry comprises establishments primarily engaged in collecting, storing, and distributing blood and blood products and storing and distributing body organs. Cross-References.
All Other Miscellaneous Ambulatory Health Care Services: This U.S. industry comprises establishments primarily engaged in providing ambulatory health care services (except offices of physicians, dentists, and other health practitioners; outpatient care centers; medical and diagnostic laboratories; home health care providers; ambulances; and blood and organ banks). Illustrative Examples: Health screening services (except by offices of health practitioners) Physical fitness evaluation services (except by offices of health practitioners) Hearing testing services (except by offices of audiologists) Smoking cessation programs Pacemaker monitoring services Cross-References.

NAICS Definition

2022 NAICS Manual

View or download this publication
[PDF, 7MB]
Reference Files
- NAICS Update Process Fact Sheet
  [PDF, 91.0KB]
Announcements

April 30, 2025
Due to a reduction in government resources, the Dr. NAICS telephone line was discontinued effective April 30th. For all NAICS-related inquiries, please contact us by email at naics@census.gov. We appreciate your understanding and thank you for your continued interest in the North American Industry Classification System.

December 20, 2024 [PDF, 224KB] Statistical Policy Directive No. 8 North American Industry Classification System (NAICS) - Request for Comments on Possible Revision Updates for 2027; Notice. Vol. 89, No. 245

September 14, 2023
NAICS Update Process Fact Sheet is now available.

2022 NAICS Structure with Change Indicator [XLSX, 86KB]

Contact Us

Source: U.S. Census Bureau
North American Industry Classification System (NAICS)
naics@census.gov
Last Revised: 05/08/2025

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