Ambulatory Health Care Data
The National Hospital Ambulatory Medical Care Survey (NHAMCS) is designed to collect data on the utilization and provision of ambulatory care services in hospital emergency and outpatient departments and ambulatory surgery locations. Findings are based on a national sample of visits to the emergency departments, outpatient departments, and ambulatory surgery locations of noninstitutional general and short-stay hospitals.
The National Health Care Surveys (including NAMCS, NHAMCS, and NHCS) are working with the Centers for Medicare and Medicaid Services Electronic Health Record Incentive Programs: Promoting Interoperability (PI) (formerly known as Meaningful Use (MU)) and the Merit-based Incentive Payment System (MIPS). Click here to find out more.
- NHAMCS Present and Future (as of 02/2023) (3/15/2023)
- 2020 NHAMCS Emergency Department Summary Tables [PDF – 1 MB] (12/2022)
- Estimates of Emergency Department Visits in the United States, 2016-2020 (12/2022)
- Emergency Department Visit Rates for Motor Vehicle Crashes by Selected Characteristics: United States, 2019–2020 (4/21/2023)
- Characteristics of Office-based Physician Visits by Age, 2019 [PDF – 412 KB] (4/19/2023)
- Emergency Department Visits with Suicidal Ideation: United States, 2016–2020 (4/13/2023)
- Emergency Department Visits Related to Mental Health Disorders Among Adults, by Race and Hispanic Ethnicity: United States, 2018–2020 [PDF – 387 KB] (3/1/2023)
- Opioids Prescribed to Adults at Discharge From Emergency Departments: United States, 2017–2020 (1/19/2023)
- Emergency Department Visit Rates by Selected Characteristics: United States, 2020 (11/21/2022)
- Emergency Department Visits by Adults With Chronic Conditions Associated With Severe COVID-19 Illness: United States, 2017–2019 [PDF – 1,013 KB] (9/1/2022)