621310 — Offices of Chiropractors
Description
This industry comprises establishments of health practitioners having the degree of D.C. (Doctor of Chiropractic) primarily engaged in the independent practice of chiropractic. These practitioners provide diagnostic and therapeutic treatment of neuromusculoskeletal and related disorders through the manipulation and adjustment of the spinal column and extremities, and operate private or group practices in their own offices (e.g., centers, clinics) or in the facilities of others, such as hospitals or HMO medical centers (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
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 8041 - Offices and Clinics of Chiropractors (via SIC1987:8041→NAICS1997:62131→2002:621310→2007:621310→2012:621310→2017:621310→2022:621310)
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 Q532 — Chiropractic & Acupuncture Services
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 621310 valid in 2022? ▾
Yes, 621310 is a valid 6-digit 2022 NAICS national industry code representing 'Offices of Chiropractors' under Sector 62 in the official classification index.
What is the SBA size standard for NAICS code 621310? ▾
The Small Business Administration (SBA) has established a small business size standard of $9,000,000 for NAICS code 621310 (Offices of Chiropractors), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 621310? ▾
According to official Census Bureau concordance tables, NAICS code 621310 (Offices of Chiropractors) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 8041 - Offices and Clinics of Chiropractors.
Related Pages & Tools
Further regulatory reference links for NAICS code 621310:
- 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 621310 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Offices of Chiropractors).
- IRS PBA Code for Chiropractor — 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.