HHS has set a clear standard for healthcare organizations: all web content and mobile applications must conform to WCAG 2.1 Level AA. While the rule is straightforward, following it can be tricky. Most healthcare organizations rely on outside vendors for essential tools like patient portals, scheduling platforms, and telehealth systems. Under Section 504, your organization is still responsible for the accessibility of these services, even if a third party provides them. Moving from a reactive approach to a proactive, defensible strategy requires a shift in how your organization handles vendor partnerships. By integrating accessibility requirements into the very beginning of your procurement process, you can mitigate legal risk and ensure that digital inclusion is built in from the start — not addressed after a problem arises.

01. Build leverage early

If you wait until a platform is live to think about accessibility, you have already lost your primary source of leverage. Accessibility must be a defined requirement before any contract is signed — not an afterthought at go-live.

Why this matters Procurement is the decisive moment under Section 504. The rule makes clear that your organization remains legally responsible for the accessibility of vendor-supplied platforms — regardless of who built them or what the contract says. If WCAG 2.1 Level AA conformance isn’t a contractual requirement from the start, you have no enforceable basis to compel fixes later — and your organization carries the full legal exposure.

02. Assign responsibility clearly

A successful vendor relationship requires a clear division of labor. When a barrier is found under Section 504, there must be a defined path to a fix — not a cycle of finger-pointing between your team and the vendor.

Why this matters Shared responsibility does not mean shared liability. Under Section 504, your organization remains accountable for the patient experience — even when the platform is vendor-owned. A clear division of labor prevents accessibility barriers from falling into gray areas where no one takes ownership and patients are left without recourse.

03. Write accountability into the contract

Don’t rely on a vendor’s verbal promise. Your contracts should include enforceable language that protects your agency and provides a safety net if a product falls short of the required standards. To create this legal protection, your agreements should include:

Why this matters Contractual accountability is the only way to shift the cost of remediation back to the vendor. Without these clauses, accessibility barriers become a permanent “remediation debt” that your agency must pay for through manual workarounds or expensive third-party retrofitting. Treating accessibility as a standard product defect — with defined fix timelines and “go-live” authority — ensures that accessibility issues have a clear owner and a resolution deadline, transforming them from legal liabilities into manageable technical tasks.

04. Verify vendor claims

Most vendors will provide a VPAT — a Voluntary Product Accessibility Template — to demonstrate their product is accessible. Once completed, a VPAT becomes an Accessibility Conformance Report (ACR). Under Section 504, you must treat this document as a starting point, not a guarantee.

Why this matters A VPAT is only as credible as the audit behind it. Under Section 504, accepting vendor documentation at face value — without independent verification — is not a defensible compliance posture. If a patient files a complaint and OCR investigates, your organization needs more than a vendor’s word.

To help you maintain a defensible posture, accessiBe provides professional support for your documentation and auditing needs. Our experts conduct manual testing to identify barriers that automated tools might miss and help you fill out a VPAT accurately. Once completed, these ACRs live on your website as a public record of your accessibility efforts and a key piece of your compliance strategy, ensuring your documentation remains current as your digital services evolve.

Conclusion: What a strong strategy looks like for 2026

As the May 2026 deadline approaches, a defensible vendor strategy isn't about finding a perfect platform. It's about proving that your organization has an active, documented process for holding vendors accountable as digital services evolve. By following these five steps, you move from a reactive state of "firefighting" to a proactive model where vendors are held accountable and digital services are built to be inclusive from the start. This structured approach not only lowers your legal risk but also ensures that your community can access essential services without barriers.