Health Care and Social Assistance › Ambulatory Health Care Services › Outpatient Care Centers
Sector
Health Care and Social Assistance
Subsector
Ambulatory Health Care Services
Industry Group
Outpatient Care Centers
National Industry (This Code)
Outpatient Mental Health and Substance Abuse Centers
Source: U.S. Census Bureau 2022 NAICS
Based on SBA Table of Small Business Size Standards (2024)
Size Standard
$19M average annual receipts
Measurement Period
3-year average
Standard Type
Revenue-Based
Applies To
All contracts under NAICS 621420
Set-Aside Programs
8(a), WOSB, HUBZone, SDVOSB
Certification Required
No (self-certify in SAM.gov)
Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.
The following activities are classified elsewhere in the NAICS system:
NAICS code 621420 — Outpatient Mental Health and Substance Abuse Centers — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Outpatient Care Centers space will be able to find your business.
If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of $19M average annual receipts, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 621420.
NAICS code 621420 is 'Outpatient Mental Health and Substance Abuse Centers', classified under the Health Care and Social Assistance sector (NAICS 62). This industry comprises establishments with medical staff primarily engaged in providing outpatient services related to the diagnosis and treatment of mental health disorders and alcohol and other sub
The SBA defines a small business under NAICS code 621420 (Outpatient Mental Health and Substance Abuse Centers) as one with $19M average annual receipts. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.
To register NAICS code 621420 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 621420 (Outpatient Mental Health and Substance Abuse Centers) to your NAICS code list. You may designate one code as your Primary NAICS code.
Other codes in Outpatient Care Centers
PSC codes commonly used with this NAICS sector
Source: GSA PSC Manual April 2025
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