SDP Waiver

The one-sentence answer

A Medicaid waiver is federal permission for a state to pay for services in a person's home and community that Medicaid would otherwise only cover in an institution — and enrolling Self-Determination Program participants in one is how California draws federal funding for the program.

Being in the Self-Determination Program and being enrolled in the waiver are two different things, which is the point most people miss. You can be one without the other.

What this means for you

Your regional center may contact you about enrolling. From April 2026, DDS sends each regional center a quarterly list of SDP participants not enrolled in the waiver, and regional centers must reach out, explain the benefits, and help people enroll. If you get that call, it is this program-wide push, not something specific to your case.

Enrolling may require a Medi-Cal step, which is where institutional deeming comes in — the rule that can let someone qualify for Medi-Cal on their own income rather than their family's.

Know why you are being asked. DDS states plainly that waiver enrollment increases federal funding for the program, that a regional center's operations funding allocation is partly driven by the percentage of its people enrolled on a waiver, and that future performance measures may be tied to that percentage. Your enrollment genuinely helps sustain the program — the directive says so in as many words, "including its role in sustaining the SDP." Whether it also helps you is a separate question worth asking directly.

We cannot yet tell you what enrolling changes for you personally — whether it affects your budget, your services, your eligibility for anything else, or imposes any obligation. That is the question families actually ask. The detail below sets out what the waiver is and why it lets you direct a budget at all; the specifics of what changes at the point of enrolment are still not something we can state, so ask your service coordinator.

For the detail-oriented

Do not confuse the SDP Waiver with service codes 490/491. Those are the HCBS Waiver Participant-Directed Services FMS codes and are not SDP. Different program, different codes.

The enrollment drive comes from D-2026-Case Management-002 (18 March 2026). Regional centers must identify unenrolled participants and verify eligibility, contact them and their families, and report progress to DDS quarterly.

What it is, formally

Taken from the waiver application itself:

Program title	California Self-Determination Program Waiver for Individuals with Developmental Disabilities
Waiver number	CA.1166
Authority	§1915(c) of the Social Security Act
Effective	1 July 2021

Self-Determination has its own waiver. This is the detail that trips people up. California runs a separate 1915(c) waiver for people with developmental disabilities — CA.0336, the one behind traditional regional centre services. SDP is not a variation inside it; it is its own waiver with its own number.

That is why the service codes differ, and why something allowable under one is not automatically allowable under the other. If a document, a vendor or an advisor is working from CA.0336, they are working from the wrong waiver for you.

The 1 July 2021 date is the same one that opened SDP to everyone, which is not a coincidence — the waiver is the federal permission that made statewide operation possible. See participant.

What this means in practice

The waiver is the reason you can direct your own budget at all. Medicaid would not ordinarily pay for a participant to hire and pay their own staff. A 1915(c) waiver is how a state asks to do things the standard rules do not allow, which is why the program has federal conditions attached to it and why your FMS has to check spending against them.

It is voluntary. WIC 4685.8 makes Self-Determination available "on a voluntary basis", and the waiver is the federal side of that same programme.

Still to come: the specific eligibility conditions in the waiver document, what changes for a participant at the point of enrolment, and whether renewal CA.1166.R02.00, pending at CMS, alters any of the above.