621498 — All Other Outpatient Care Centers
Description
This U.S. industry comprises establishments with medical staff primarily engaged in providing general or specialized outpatient care (except family planning centers, outpatient mental health and substance abuse centers, HMO medical centers, kidney dialysis centers, and freestanding ambulatory surgical and emergency centers). Centers or clinics of health practitioners with different degrees from more than one industry practicing within the same establishment (e.g., Doctor of Medicine and Doctor of Dental Medicine) are included in this industry (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Illustrative Examples
- Outpatient biofeedback centers and clinics
- Outpatient pain therapy centers and clinics
- Outpatient community health centers and clinics
- Outpatient sleep disorder centers and clinics
Exclusions & Cross-References
- Centers and clinics of health practitioners from the same industry primarily engaged in the independent
- practice of their profession are classified in Industry 62111, Offices of Physicians; Industry 621210,
- Offices of Dentists; and Industry Group 6213, Offices of Other Health Practitioners;
- Family planning centers are classified in Industry 621410, Family Planning Centers;
- Outpatient mental health and substance abuse centers are classified in Industry 621420, Outpatient Mental
- Health and Substance Abuse Centers;
- HMO medical centers are classified in U.S. Industry 621491, HMO Medical Centers;
- Dialysis centers are classified in U.S. Industry 621492, Kidney Dialysis Centers; and
- Freestanding ambulatory surgical and emergency centers are classified in U.S. Industry 621493,
- Freestanding Ambulatory Surgical and Emergency Centers.
Overview Facts
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→NAICS1997:621498→2002:621498→2007:621498→2012:621498→2017:621498→2022:621498)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC Q201 — MEDICAL- MANAGED HEALTHCARE
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 621498 valid in 2022? ▾
Yes, 621498 is a valid 6-digit 2022 NAICS national industry code representing 'All Other Outpatient Care Centers' under Sector 62 in the official classification index.
What is the SBA size standard for NAICS code 621498? ▾
The Small Business Administration (SBA) has established a small business size standard of $25,500,000 for NAICS code 621498 (All Other Outpatient Care Centers), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 621498? ▾
According to official Census Bureau concordance tables, NAICS code 621498 (All Other Outpatient Care Centers) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 8093 - Specialty Outpatient Facilities, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 621498:
- 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.
- NAICS 621498 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (All Other Outpatient Care Centers).
- IRS PBA Code for Medical Clinic — Principal Business Activity tax reporting details.
- 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.