CAAS accreditation is a three-year accreditation that the Commission on Accreditation of Ambulance Services grants to ambulance services that meet CAAS Standards Version 4.0 (ANSI/CAAS v4.0-2024), a set of 147 standards. It is open to private, public, fire department, hospital-based, third-service and not-for-profit ambulance providers. Integral Healthcare Solutions (IHS) drafts the administrative, personnel and quality documentation for CAAS accreditation; your medical director and field leaders own clinical and safety operations.

Last reviewed: October 2026. CAAS standards, fees, key steps and FAQ pages checked on October 2, 2026.

What is CAAS accreditation?

CAAS describes itself this way: "CAAS is an independent, nonprofit accrediting agency dedicated to promoting excellence in mobile patient care. Since 1990, CAAS has developed and maintained the nationally recognized standards for ambulance services and medical response systems" (CAAS FAQ).

The governing text is CAAS Standards Version 4.0, which CAAS designates "ANSI/CAAS v4.0-2024." CAAS calls it "the most comprehensive update in CAAS history" and says it contains "147 clearly defined standards with measurable characteristics and documentation requirements" (CAAS FAQ). "The standards are organized into four sections aligned with how agencies operate": Section 100 Administration, Section 200 Clinical, Section 300 Operations and Section 400 Special and Other Services (CAAS Standards Version 4.0).

CAAS sells the standards on their own and as part of the Version 4.0 Application and Education Package. CAAS says: "The package provides the standards, a documentation checklist with required evidence for each standard, a folder structure for organization, and submittal instructions" (CAAS FAQ).

The review has two stages and an independent decision. "CAAS performs an off-site review followed by an on-site evaluation by a three-member team, including a board-certified emergency physician." Then: "An independent Panel of Commissioners makes the final accreditation determination" (CAAS FAQ).

Who needs it and what triggers it

Any ambulance system can apply. CAAS states: "All ambulance systems are eligible for three-year accreditation, including private, public, fire department, hospital-based, third-service, and not-for-profit providers" (CAAS FAQ).

CAAS's pages reviewed do not list triggers beyond eligibility. Section 400 matters when an agency performs special services. CAAS describes the Specialty Care Transport standards (Section 402) as covering agencies that "plan for and accept scheduled or unscheduled high-acuity transports between healthcare facilities requiring specialized personnel, training, equipment and/or skills beyond the normal scope of practice of an EMS provider," and standard 403.01 covers "Mobile Integrated Health/Community Paramedicine." CAAS adds: "Agencies that do perform any of these functions at any level are required to meet and demonstrate compliance with the associated standards" (CAAS Version 4.0 Standard Summaries).

CAAS lists benefits of accreditation, among them "Independent validation of operational, financial, and compliance practices" (CAAS FAQ). The CAAS pages we reviewed do not say that any payer or municipality requires it.

Plan for time. CAAS says: "Many agencies complete preparation and submission within 12–16 months, allowing for policy alignment, documentation collection, and staff engagement" (CAAS FAQ), and "CAAS schedules on-site reviews within six months of application submission" (CAAS Fees).

How IHS helps

IHS works from your purchased copy of the CAAS Version 4.0 standards and Application Package. The process:

1. Gap assessment. IHS compares your current policies and records against the Version 4.0 standards. CAAS's own Key Steps page says: "A successful submission begins with a disciplined self-review against the current CAAS Standards" (CAAS Key Steps).
2. Questionnaires. IHS sends questionnaires on administration, personnel, complaints, incidents and quality review.
3. Crosswalk to evidence. IHS maps each standard to your evidence and places it in the CAAS v4.0 folder structure.
4. Drafted documents. IHS drafts administrative controls, personnel record procedures, complaint and incident workflows and quality-review documentation. Anything clinical goes to your EMS medical director for approval.
5. Mock review. IHS reviews the evidence file against the standards the way an off-site reviewer reading them would, and lists what is missing.
6. Responses to findings. IHS drafts responses to review findings for your agency to submit.

What you supply: the standards and Application Package, your current policies, personnel files and incident logs, and your EMS medical director's approval of anything clinical.

The limit: clinical protocols, dispatch, vehicle and field safety operations are EMS expertise IHS does not have. IHS covers the administrative and quality documentation. Your agency submits; IHS drafts. More on IHS's approach is on the accreditation consulting page.

What to have ready

• Your copy of CAAS Standards Version 4.0 (ANSI/CAAS v4.0-2024), which CAAS lists at "$50" on its fees page.
• The Version 4.0 Application and Education Package, with its "documentation checklist with required evidence for each standard" (CAAS FAQ).
• A completed self-review against Version 4.0, the starting point CAAS names in Step 2 of its Key Steps.
• Administrative policies and records for Section 100 Administration (Version 4.0 sections).
• Clinical documents for Section 200 Clinical (Version 4.0 sections), which IHS has your medical director approve before they are filed.
• Operations records for Section 300 Operations (Version 4.0 sections).
• A list of any Section 400 services you perform, such as specialty care transport (402) or mobile integrated health (403.01); CAAS says agencies performing them "at any level are required to meet and demonstrate compliance with the associated standards" (Standard Summaries).
• Your annual transport volume, because "Application fees are based on the agency's annual transport volume" (CAAS Fees).
• Evidence filed in the CAAS v4.0 folder structure, since agencies "submit the completed application and supporting documentation on USB drives, per the instructions included with the Application Package"; CAAS says it "is actively evaluating an online submission platform" (CAAS FAQ).
• Leadership and staff availability for an on-site evaluation by "a three-member team, including a board-certified emergency physician," scheduled "within six months of application submission" (CAAS FAQ; CAAS Fees).

To go through the list with IHS, book the introductory call below.

How it compares

Ground ambulance services look at these routes. They are described here as the sources describe them.

What it costs

CAAS publishes its fees (CAAS Fees page, read October 2, 2026):

• Publications: "CAAS Standards Version 4.0 (ANSI-approved) $50"; "CAAS Version 4.0 Application and Education Package (includes Standards) $275."
• Application fee: "Application fees are based on the agency's annual transport volume. This 5 Tier fee structure went into effect January 1, 2026." Tier 1 (1 to 4,999 transports) $3,750; Tier 2 (5,000 to 19,999) $8,250; Tier 3 (20,000 to 49,999) $11,000; Tier 4 (50,000 to 99,999) $12,000; Tier 5 (100,000+) $13,000.
• Site visit deposit: "Tiers 1–2: Minimum deposit is $6,000. Tiers 3–5: Minimum deposit is $8,000."
• Postponement: $500 when requested 60 or more days before the on-site review; $1,000 at 30 to 59 days; no postponement under 30 days.
• Withdrawal refunds: 80% of the application fee before the off-site review is complete, 20% after it, 10% after the on-site review, and none after the on-site review and before Panel review, each "minus any reviewer expenses incurred."

Verify current fees with CAAS. IHS scopes each engagement after a free introductory call.

What this is not

• IHS is not CAAS and does not grant, predict or influence an accreditation decision. The Panel of Commissioners decides.
• IHS does not contact, submit to or speak for your agency to CAAS. IHS drafts; your agency submits.
• IHS does not write clinical protocols on its own authority, run dispatch, or assess vehicles and field safety. This page is not legal advice.

Frequently asked questions

What is CAAS accreditation and who can apply for it?

CAAS accreditation is a three-year accreditation from the Commission on Accreditation of Ambulance Services, an independent nonprofit that has maintained standards for ambulance services and medical response systems since 1990. CAAS says all ambulance systems are eligible, including private, public, fire department, hospital-based, third-service and not-for-profit providers.

Does a fire-based or hospital-based EMS agency qualify for CAAS?

Yes. CAAS names fire department and hospital-based providers among the ambulance systems eligible for three-year accreditation.

How long does it take an ambulance service to get CAAS accredited?

CAAS says many agencies complete preparation and submission within 12 to 16 months. After submission, CAAS schedules the on-site review within six months, and the Panel of Commissioners then makes the decision.

How much does CAAS accreditation cost for an agency our size?

CAAS bases its application fee on annual transport volume, in five tiers effective January 1, 2026, from $3,750 for 1 to 4,999 transports to $13,000 for 100,000 or more. It also requires a minimum site visit deposit of $6,000 (Tiers 1 and 2) or $8,000 (Tiers 3 to 5). Verify current fees with CAAS.

What documentation does CAAS expect for each standard?

The Version 4.0 Application and Education Package includes a documentation checklist with the required evidence for each standard, a folder structure and submittal instructions. Agencies file their evidence in that folder structure and submit it on USB drives; CAAS says it "is actively evaluating an online submission platform."

What happens during the CAAS off-site review and the on-site evaluation?

CAAS first reviews the submitted documentation off-site. A three-member team that includes a board-certified emergency physician then conducts the on-site evaluation.

Who makes the final CAAS accreditation decision, and how long does accreditation last?

An independent Panel of Commissioners makes the final determination. CAAS accreditation runs for three years.

Do we need to meet the Specialty Care Transport or Mobile Integrated Health standards in Section 400?

Only if you perform those services. CAAS says agencies that perform any of these functions at any level are required to meet and demonstrate compliance with the associated standards, such as Section 402 for specialty care transport and 403.01 for mobile integrated health and community paramedicine.

CAAS versus CAMTS for a ground ambulance service: which fits?

Both accredit ground services. CAMTS standards cover rotor-wing and fixed-wing services as well as ground critical care and ALS/BLS, while CAAS standards are written for ambulance services and medical response systems. This page does not recommend one; compare the scope of each against your services and any contract that names an accreditor.

Can we postpone our CAAS site visit, and what does it cost to withdraw?

CAAS charges $500 to postpone 60 or more days before the on-site review and $1,000 at 30 to 59 days, and does not allow postponement under 30 days. Withdrawal refunds fall from 80% of the application fee before the off-site review is complete to none between the on-site review and Panel review, minus reviewer expenses.