By Austin Senior Advisor Care Team · August 5, 2026
Moving a parent into care can open a Special Enrollment Period to change their Medicare Advantage or drug plan. It usually lasts two months, nobody at the community will mention it, and assisted living and nursing homes follow different rules.
The window nobody mentions on move-in day
Move-in day has a paperwork stack. The residency agreement, the medication list, the physician's statement, the emergency contacts, the direct-debit form. Somewhere in that pile there is no page at all about Medicare, and there is no reason there would be. The community is not your parent's insurance agent, and the plan is not notified that anything happened.
But something did happen. A move can open a Special Enrollment Period — a limited stretch of time outside the usual fall window when your parent is allowed to join, switch, or drop a Medicare Advantage plan or a Part D drug plan. For most moves, that stretch is two full months after the month of the move, and then it closes.
Families almost never use it. They are managing a bed, a bureau, a sibling, and a parent who does not want to be there. By the time anyone thinks about insurance, it is November and the answer has become wait until next year. Sometimes waiting is fine. Sometimes it means twelve months on a plan whose network no longer includes the doctors your parent can actually get to.
Two different rules, and only one of them is generous
There are two separate Medicare provisions in play, and which one applies depends entirely on what kind of place your parent moved into. Confusing them is the single most common error we see.
The first is the institutional enrollment period. Medicare treats people who live in certain long-term care facilities as a special category, and it is unusually flexible: according to Medicare.gov, the chance to join, switch, or drop a plan lasts as long as your parent lives in the institution, and for two full months after the month they move out. Not one window. An ongoing one.
The second is the ordinary change-of-address Special Enrollment Period, which applies to anyone who moves — including a move into assisted living. This one is not ongoing. It starts when the move happens and runs for two full months after, and then it is gone.
So the practical question on move-in day is not whether your parent gets a window. It is which window, and whether it stays open or shuts in sixty days.
Why Medicare does not consider assisted living an institution
This is where families get caught, because in every ordinary sense of the word an Austin assisted living community is an institution. Your mother lives there. Staff give her medications. There is a nurse. It is licensed by the state and inspected by HHSC.
Medicare does not use the ordinary sense of the word. Federal regulation at 42 CFR 422.2 defines "institutionalized" as someone who continuously resides, or is expected to continuously reside, for 90 days or longer in one of a specific closed list of settings: a skilled nursing facility, a Medicaid nursing facility, an intermediate care facility for people with intellectual and developmental disabilities, a psychiatric hospital or unit, a rehabilitation hospital or unit, a long-term care hospital, or a swing-bed hospital. There is a catch-all for facilities CMS separately approves as equivalent, but state-licensed assisted living is not on that list and does not get there by resembling the items on it.
The consequence is concrete. A parent who moves into a nursing home in Round Rock has an enrollment window that stays open the whole time she lives there. A parent who moves into assisted living two miles away has roughly sixty days. Same family, same month, same insurance card, completely different amount of time to think.
Memory care does not change this. In Texas, memory care is an Alzheimer's certification layered onto a Type B assisted living license, not a separate license category — which means for Medicare enrollment purposes a secured memory care unit is assisted living.
Austin's county lines are doing more work than you think
Medicare Advantage plans are not sold statewide. Under the same federal regulation, the service area of a local Medicare Advantage plan is defined as one or more counties, with CMS applying a "county integrity rule" that a service area generally consists of whole counties. Partial-county service areas exist but require specific CMS approval.
The Austin metro is not one county. It is at least three that matter for senior care. Austin, Pflugerville and Lakeway sit in Travis. Round Rock, Georgetown, Cedar Park and Leander are in Williamson. Kyle and San Marcos are in Hays. Families routinely move a parent twenty-five minutes up I-35 or 183A to be closer to a daughter in Cedar Park, and in doing so cross a line that Medicare treats as a hard boundary.
That move may take your parent outside her plan's service area entirely, in which case she must choose something new. Or it may leave her inside a plan that happens to cover both counties but where a different menu of plans is now available to her — Medicare.gov treats that as its own trigger, describing the case of someone who "moved to a new address that's still in my plan's service area, but I have new plan options in my new location."
The honest version: a move across town within Travis County usually changes nothing about which plans your parent can buy. A move from Travis to Williamson or Hays is worth twenty minutes on the plan comparison tool at Medicare.gov, because the answer is frequently different and nobody will volunteer it.
Telling the plan before the move buys you an extra month
This is the cheapest thing in this article and the most often skipped. If your parent notifies the plan before moving, the Special Enrollment Period starts the month before the move and still runs two full months past it. If she notifies the plan after the fact, the clock starts from the notification, not from the boxes being unpacked.
In practice that is one phone call to the member services number on the back of the card, made in the week between the deposit and the move-in date, saying that she is moving and giving the new address. It costs nothing and it adds a month to the decision.
There is also a passive outcome worth naming, because it happens by default to families who do nothing. If your parent moves outside her old plan's service area and does not join a new Medicare Advantage plan during the window, she is dropped from the old plan and enrolled in Original Medicare. That is not necessarily a disaster — Original Medicare is accepted broadly — but it arrives without drug coverage attached, and a gap in Part D is how late-enrollment penalties start.
Update the address with Social Security too. It is a separate system from the Medicare Advantage plan, and updating one does not update the other.
What a rehab stay does and does not do
A large share of Austin moves into care start in a hospital and route through a skilled nursing facility for rehab. Families reasonably assume that a stay in a skilled nursing facility makes their parent "institutionalized" and unlocks the flexible window.
Read the regulation again: the definition requires continuously residing, or being expected to continuously reside, for 90 days or longer. A three-week rehab stay after a hip fracture does not meet it. An admission that everyone expects to become permanent does, on the strength of the expectation, without waiting out the ninety days.
So the question to put to the facility's social worker is not "is she in a skilled nursing facility," which you already know. It is whether her stay is documented as short-term rehabilitation or as long-term residence. That distinction drives more than enrollment rights, and it is worth having a clear answer to in writing.
While you are asking, confirm whether the hospital stay that preceded it was a true inpatient admission or observation. It is a different rule with a different consequence, and we walk through it in observation status and what it costs Austin families.
If the window has already closed
Missing it is not catastrophic, and there are two ordinary windows behind it.
Medicare's annual Open Enrollment runs October 15 through December 7, with changes effective January 1. Anyone can join, drop, or switch a Medicare Advantage plan or a drug plan during it. For a family who moves a parent in August, that is roughly ten weeks away — a real option, not a consolation prize.
After that, people already enrolled in a Medicare Advantage plan get a further window from January 1 through March 31, during which they may make one change: switch to a different Medicare Advantage plan, or drop it and return to Original Medicare with or without a drug plan.
One more thing worth knowing, because it is time-limited and nobody discovers it on their own: if your parent joined a Medicare Advantage plan when first eligible at 65 and is still within the first twelve months, she has special rights to buy a Medigap policy if she drops back to Original Medicare. The same applies if she dropped a Medigap policy the first time she joined a Medicare Advantage plan and is still inside that twelve-month trial period. Outside those trial rights, Medigap underwriting rules are considerably less forgiving, and that is a conversation to have with a counselor rather than a salesperson.
Who to call in Central Texas, at no cost
You do not need to buy advice to sort this out, and you should be careful about who you take it from. A licensed agent is paid by the plans they can sell.
Texas runs a free Medicare counseling program — the Health Information, Counseling and Advocacy Program, the state's version of the federal SHIP. The Texas Medicare Help Line is 800-252-9240. Texas Health and Human Services describes it as a partnership between HHSC, the Texas Legal Services Center, and the Area Agencies on Aging, which train and oversee certified benefits counselors across the state.
That last part is why this is local. The Area Agency on Aging of the Capital Area, housed at CAPCOG, is the Austin-region arm of that partnership and its benefits counseling is free. It reaches Travis, Williamson, Hays, Bastrop, Blanco, Burnet, Caldwell, Fayette, Lee and Llano counties — the whole footprint most families are moving a parent within. Benefits counseling is at 512-916-6062, and the region's Aging and Disability Resource Center is at 855-937-2372.
Medicare itself will answer enrollment questions directly at 1-800-MEDICARE (1-800-633-4227), TTY 1-877-486-2048. Ask them to confirm in the call which Special Enrollment Period they are applying, and write down the date it ends. That single sentence prevents most of the trouble described above.
Insurance is not the first thing on your mind during a move, and it should not be. But it is a two-month problem sitting inside a six-month project, and the two months are the part that does not wait. For where the rest of the money comes from, see how Austin families pay for senior care.
