The trigger is age at the time of care, not age at death, and the verb is mandatory. 42 U.S.C. 1396p(b)(1)(B) provides that in the case of an individual "who was 55 years of age or older when the individual received such medical assistance, the State shall seek adjustment or recovery from the individual's estate," limited to the long-term-care categories named above or, at the state's election, to any other items or services under the plan. A second, narrower mandatory case sits at (b)(1)(A): where a lifetime lien was permitted because the person was permanently institutionalized, the state must seek recovery from the estate or on the sale of the property subject to that lien. Medicaid.gov states the same rule in its own words, adding that under certain conditions money remaining in a trust after the enrollee's death may be used to reimburse Medicaid.
The protections suspend recovery; they do not cancel it. Recovery may be made "only after the death of the individual's surviving spouse, if any," and only when there is no surviving child under 21 and no surviving child who is blind or disabled, a limb that carries no age ceiling. Read carefully, that is a timing rule rather than a forgiveness rule. Whether the claim can still be collected once the protected person dies or turns 21 depends on what is left and on which estate definition the state uses, which is why a blanket statement in either direction, that the debt simply goes away or that it always returns, is wrong. A separate set of protections at (b)(2)(B) applies specifically where a lien was placed on the home: no recovery while a sibling who lived in the home for at least a year before the person entered the institution, or a son or daughter who lived there for at least two years and provided care that kept the person out of an institution, is lawfully residing there and has done so continuously since the admission.
The two definitions of "estate" are where planning succeeds or fails. Subsection (b)(4)(A) requires the estate to include all real and personal property within the probate estate as state probate law defines it. Subsection (b)(4)(B) then permits a state, at its option, to include "any other real and personal property and other assets in which the individual had any legal title or interest at the time of death (to the extent of such interest), including such assets conveyed to a survivor, heir, or assign of the deceased individual through joint tenancy, tenancy in common, survivorship, life estate, living trust, or other arrangement." A state that has adopted the expanded definition can therefore reach exactly the assets that ordinary probate avoidance is designed to move. Whether a particular deed, beneficiary designation or trust is beyond a particular state's reach is a question for a lawyer in that state, and general answers circulating about any one technique are unreliable for precisely this reason.
The hardship waiver is mandatory for states, and its content is not. The state agency "shall establish procedures ... under which the agency shall waive the application of this subsection ... if such application would work an undue hardship as determined on the basis of criteria established by the Secretary." Federal standards require those procedures to exempt income, resources and property that were exempt as of 1 April 2003 under manual instructions issued because of federal responsibility for Indian tribes and Alaska Native villages. Beyond that the practical criteria, such as whether an heir depends on the property for support or income, vary, and the waiver has to be requested rather than granted automatically.
The lifetime lien is real but narrow. No lien may be imposed on a living person's property for correctly paid Medicaid, with two exceptions: a court judgment for benefits incorrectly paid, and real property of someone who is an inpatient in a nursing facility or other medical institution and whom the state determines, after notice and an opportunity for a hearing, "cannot reasonably be expected to be discharged from the medical institution and to return home." Even then no lien may be imposed if the spouse, a child under 21, a blind or disabled child of any age, or a sibling with an equity interest who lived there for at least a year before admission is lawfully residing in the home. And the lien dissolves if the person is discharged and returns home. The reason this matters to a reader is the false reassurance it corrects: "Medicaid cannot take your house while you are alive" is close enough to be repeated constantly, and it is not what the statute says.