621420 — Outpatient Mental Health and Substance Abuse Centers
Description
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 substance abuse. These establishments generally treat patients who do not require inpatient treatment. They may provide a counseling staff and information regarding a wide range of mental health and substance abuse issues and/or refer patients to more extensive treatment programs, if necessary.
Illustrative Examples
- Outpatient alcoholism treatment centers and clinics (except hospitals)
- Outpatient mental health centers and clinics (except hospitals)
- Outpatient detoxification centers and clinics (except hospitals)
- Outpatient substance abuse treatment centers and clinics (except hospitals)
- Outpatient drug addiction treatment centers and clinics (except hospitals)
Overview Facts
| NAICS Code | 621420 |
|---|---|
| Industry Title | Outpatient Mental Health and Substance Abuse Centers |
| SBA Size Standard | $19,000,000 |
| IRS PBA Code | 621420 (exact match) |
| Sectors Hierarchy | Sector 62 → 621 → 6214 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 8093 - Specialty Outpatient Facilities, NEC (via SIC1987:8093→NAICS1997:62142→2002:621420→2007:621420→2012:621420→2017:621420→2022:621420)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 621420:
- Sector 62 Directory Hub — List of related industries in the Health Care and Social Assistance sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 6214
Frequently Asked Questions (FAQ)
Is 621420 a valid 2022 NAICS code?
NAICS 621420 is 'Outpatient Mental Health and Substance Abuse Centers', a 2022 U.S. national industry under Sector 62 (Health Care and Social Assistance); the SBA small-business size standard is $19,000,000.
What is the SBA size standard for NAICS 621420?
The SBA small business size standard for NAICS 621420 is $19,000,000 (based on receipts).
What is the legacy SIC code mapping for 621420?
NAICS code 621420 maps to the legacy 1987 SIC codes: 8093 - Specialty Outpatient Facilities, NEC.