When a person becomes incapacitated — by accident, by stroke, by anesthesia, by dementia, by the slow drift of advanced illness — somebody must make medical decisions for them. The law has a default order. Spouse first, then adult children, then parents, then siblings. In most U.S. states, in most of Europe, in most of the world, the unmarried partner appears nowhere in this order. The partner of thirty years, the person who knows what the patient would want, the person who has been at every appointment — that person, in the absence of advance documentation, is legally a stranger.
Medical decision-making rights are the most consequential of all partner rights because they are exercised at the moments of highest stakes. The ventilator question. The feeding-tube question. The hospice question. The "comfort measures only" question. The do-not-resuscitate question. These decisions are made under acute time pressure by whoever has legal authority. If the legal authority is the patient's estranged sister rather than the partner of three decades, the patient's wishes are unlikely to prevail.
The collective scale of the problem is hidden by the existence of workarounds. A healthcare proxy form, a durable power of attorney for healthcare, a living will — these documents, properly executed, give the partner authority. The workaround works when the documents exist and the staff honors them. The workaround fails in three predictable scenarios. First, when the documents do not exist, which is the case for the majority of adults. Second, when the documents exist but the patient is admitted to a hospital that does not know about them, has not been given a copy, or treats them as advisory. Third, when biological family contests the partner's authority and the hospital, faced with a legal dispute, retreats to the statutory default order.
The history of this problem is gay history. Through the AIDS epidemic, partners of dying men were routinely excluded from ICU rooms, refused information, overruled on treatment decisions, and shut out of funeral arrangements by parents who had often rejected the patient in life and reappeared at his death. Sharon Kowalski and Karen Thompson became the canonical case: Thompson was barred from visiting her partner of years after Kowalski's car accident, and spent eight years litigating for guardianship while Kowalski's father controlled her care. The case shaped a generation of advocacy and produced the recognition that medical decision-making rights are romantic infrastructure.
The collective fix is now partially built. Most U.S. states have healthcare-proxy statutes. Most hospitals have intake procedures that ask about advance directives. Federal regulation since 2010 requires hospitals receiving Medicare funds to honor a patient's chosen visitors and decision-makers regardless of marital or biological relationship. Same-sex marriage, post-Obergefell, automatically confers spousal medical decision-making in the U.S. The structure has improved.
It has not closed. Unmarried partners — same-sex or different-sex — still face the statutory default. Couples in jurisdictions without same-sex marriage face it. Couples who chose not to marry for any reason face it. Workarounds remain workarounds, depending on documentation, hospital cooperation, and the willingness of biological family not to contest.
Carol Levine's research on family caregivers found that the partner who provided the daily care across the illness — managing medications, attending appointments, coordinating with specialists, sleeping at the hospital — was often the same person who, at the moment of incapacity, was asked to leave the room so that a sibling who had been absent for years could make the decisions. The structural cruelty of this is widely recognized and has been only partially remedied.
A romantic-lens reading insists on the inversion of the default order. The presumption should be: the person who has been living with the patient, providing care, and is identified by the patient as their primary relationship, is the medical decision-maker. The spouse-blood-family default should be overrideable by lived evidence, not the other way around. Joanne Lynn's work on end-of-life care argues for "operative next of kin" — whoever has been operating as next of kin, regardless of legal category. The reform agenda points toward incorporating this concept into statute.
The collective stakes go beyond same-sex partnership. An aging population means more incapacity, more dementia, more decisions made by proxies. The decision-maker structure built for nuclear families with proximate blood relatives does not fit the reality of how many older adults now live — alone, with a partner, with a friend-caregiver, with a chosen-family member. The medical-decision default needs to be rebuilt for the actual demography of incapacity in 2026 and forward.
The right to make medical decisions for a partner is the right to be present at the most consequential moments of their life. To structure it well is to honor the partnership. To leave it as it is, dependent on documents and hospital goodwill and the absence of family conflict, is to leave the partnership at the mercy of a default that does not see it.