621512 — Diagnostic Imaging Centers
NAICS 621512 is 'Diagnostic Imaging 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.
Description
This U.S. industry comprises establishments known as diagnostic imaging centers primarily engaged in producing images of the patient generally on referral from a health practitioner.
Illustrative Examples
- Computer tomography (CT-scan) centers
- Medical radiological laboratories
- Dental or medical X-ray laboratories
- Ultrasound imaging centers
- Magnetic resonance imaging (MRI) centers
Overview Facts
| NAICS Code | 621512 |
|---|---|
| Industry Title | Diagnostic Imaging Centers |
| SBA Size Standard | $19,000,000 |
| IRS PBA Code | 621510 (rolled-up match) |
| Sectors Hierarchy | Sector 62 → 621 → 6215 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
NAICS Structure: 621512
National Industry
Sector (2)
62
Health Care and Social Assistance
Subsector (3)
621
Ambulatory Health Care Services
Industry Group (4)
6215
Medical and Diagnostic Laboratories
Industry (5)
62151
Medical and Diagnostic Laboratories
National Industry (6)
621512
Diagnostic Imaging Centers
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 8071 - Medical Laboratories (via SIC1987:8071→NAICS1997:621512→2002:621512→2007:621512→2012:621512→2017:621512→2022:621512)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 621512:
- 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 6215
Frequently Asked Questions (FAQ)
Is 621512 a valid 2022 NAICS code?
NAICS 621512 is 'Diagnostic Imaging 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 621512?
The SBA small business size standard for NAICS 621512 is $19,000,000 (based on receipts).
What is the legacy SIC code mapping for 621512?
NAICS code 621512 maps to the legacy 1987 SIC codes: 8071 - Medical Laboratories.