2022 NAICS national industry in sector 62 Health Care and Social Assistance
622310 Specialty (except Psychiatric and Substance Abuse) Hospitals
NAICS 622310 is the US industry code for specialty (except psychiatric and substance abuse) hospitals. It covers establishments known and licensed as specialty hospitals primarily engaged in providing diagnostic and medical treatment to inpatients with a specific type of disease or medical condition (except psychiatric or substance abuse).
- Code
- 622310 (2022 NAICS)
- Title
- Specialty (except Psychiatric and Substance Abuse) Hospitals
- Part of
- Specialty (except Psychiatric and Substance Abuse) Hospitals
- SBA small business limit
- Average annual receipts up to $47 million
- Closest UK SIC
- 86101, 86102 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This industry comprises establishments known and licensed as specialty hospitals primarily engaged in providing diagnostic and medical treatment to inpatients with a specific type of disease or medical condition (except psychiatric or substance abuse). Hospitals providing long-term care for the chronically ill and hospitals providing rehabilitation, restorative, and adjustive services to physically challenged or disabled people are included in this industry. These establishments maintain inpatient beds and provide patients with food services that meet their nutritional requirements. They have an organized staff of physicians and other medical staff to provide patient care services. These hospitals may provide other services, such as outpatient services, diagnostic X-ray services, clinical laboratory services, operating room services, physical therapy services, educational and vocational services, and psychological and social work services.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Establishments known and licensed as hospitals primarily engaged in providing diagnostic and therapeutic inpatient services for a variety of medical conditions, both surgical and nonsurgical, are classified in Industry 622110, General Medical and Surgical Hospitals.
- Establishments known and licensed as hospitals primarily engaged in providing diagnostic and treatment services for inpatients with psychiatric or substance abuse illnesses are classified in Industry 622210, Psychiatric and Substance Abuse Hospitals.
- Establishments referred to as hospitals but primarily engaged in providing inpatient nursing and rehabilitative services to persons requiring convalescence are classified in Industry 623110, Nursing Care Facilities (Skilled Nursing Facilities).
- Establishments referred to as hospitals but primarily engaged in providing residential care of persons with intellectual and developmental disabilities are classified in Industry 623210, Residential Intellectual and Developmental Disability Facilities.
- Establishments referred to as hospitals but primarily engaged in providing inpatient treatment for mental health and substance abuse illnesses with the emphasis on counseling rather than medical treatment are classified in Industry 623220, Residential Mental Health and Substance Abuse Facilities.
Activities listed under 622310
The Census index assigns these 14 activities to this code. If your business matches one, this is your code.
- Cancer hospitals
- Children's hospitals, specialty (except psychiatric, substance abuse)
- Chronic disease hospitals
- Extended care hospitals (except mental, substance abuse)
- Eye, ear, nose, and throat hospitals
- Hospitals, specialty (except psychiatric, substance abuse)
- Leprosy hospitals
- Maternity hospitals
- Neurological hospitals
- Obstetrical hospital
- Orthopedic hospitals
- Physical rehabilitation hospitals
- Rehabilitation hospitals (except alcoholism, drug addiction)
- Tuberculosis and other respiratory illness hospitals
SBA size standard for 622310
To count as a small business for SBA loans and federal contracts under NAICS 622310, your business (including affiliates) must not exceed $47 million in average annual receipts. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 8610), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Data last changed November 14, 2026. How this page is built.