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NAICS Code

621999Health Care and Social Assistance

All Other Miscellaneous Ambulatory Health Care Services

Official 2022 NAICS classification for All Other Miscellaneous Ambulatory Health Care Services.

SBA Small-Business Cap

$20.5 million in average annual receipts

If your company is at or below this cap, you qualify as a small business under NAICS 621999 and can pursue set-aside contracts.

Classification guidance

Use this code when the contract work aligns with all other miscellaneous ambulatory health care services.

Are you a small business under NAICS 621999?

SBA cap for this code: $20.5 million in average annual receipts.

$Million

Enter your average annual revenue (in millions) above to see if you qualify.

You qualify under NAICS 621999 — here’s the path to your first contract

  1. 1

    Register on SAM.gov

    Get your UEI and complete entity registration so you’re eligible to receive federal contracts.

    Read the SAM.gov registration guide →
  2. 2

    Pursue set-aside certifications

    Apply for 8(a), HUBZone, WOSB, or SDVOSB certifications you may qualify for — these unlock preferential set-aside contracts.

    Compare small-business certifications →
  3. 3

    Find and bid on opportunities

    Search SAM.gov for solicitations under NAICS 621999, and consider an end-to-end partner like SLED.AI to handle opportunity matching, proposal writing, and submission.

    Talk to SLED.AI →

Related NAICS codes in Health Care and Social Assistance

For an authoritative check before submitting a bid, verify against the current SBA Table of Size Standards.

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