2022 NAICS subsector in sector 62 Health Care and Social Assistance
621 Ambulatory Health Care Services
NAICS 621 is the US industry code for ambulatory health care services. Industries in the Ambulatory Health Care Services subsector provide health care services directly or indirectly to ambulatory patients and do not usually provide inpatient services.
Official definition
Industries in the Ambulatory Health Care Services subsector provide health care services directly or indirectly to ambulatory patients and do not usually provide inpatient services. Health practitioners in this subsector provide outpatient services, with the facilities and equipment not usually being the most significant part of the production process.
Codes in 621
Data last changed November 14, 2026. How this page is built.