Why incapacity planning often depends less on the document—and more on the person interpreting it
Estate planning conversations tend to revolve around money: wills, trusts, taxes, and the orderly transfer of assets. Yet in practice, the most difficult decisions families face are rarely financial. They arise during moments of medical crisis, when a loved one cannot speak for themselves and someone else must decide what happens next.
That is the purpose of an advance medical directive.
In Virginia, an advance medical directive allows an individual to do two primary things: appoint a health care agent to make medical decisions on their behalf, and express instructions regarding medical treatment if they are unable to communicate those wishes themselves. The legal framework for these documents is found in the Virginia Health Care Decisions Act, codified primarily at Virginia Code §54.1-2981 through §54.1-2993.
On paper, the concept appears straightforward. A person documents their wishes. A trusted agent ensures those wishes are honored. The directive provides clarity and guidance when it is needed most.
But in real life, the situation is rarely so simple.
One of the most interesting and under-discussed tensions in incapacity planning arises when the written instructions in an advance directive do not perfectly align with the judgment of the appointed health care agent.
It is a scenario that occurs more often than many people realize.
The Structure of Advance Directives in Virginia
Virginia law intentionally gives significant authority to the appointed health care agent.
Under Virginia Code §54.1-2983, an adult with capacity may execute an advance directive authorizing another person to make health care decisions on their behalf and may include instructions regarding health care preferences. The directive becomes operative when the patient is determined to be incapable of making an informed decision regarding medical treatment.
Under the statute, incapacity is generally determined by the attending physician, often with confirmation from another physician or licensed clinical psychologist depending on the circumstances.
Once that incapacity determination is made, the appointed health care agent is authorized to make health care decisions consistent with the patient’s directive and known wishes.
The statute is explicit about the scope of this authority. The agent may consent to, refuse, or withdraw medical treatment on behalf of the patient, subject to any limitations expressed in the directive itself.
At the same time, Virginia law recognizes that written instructions cannot anticipate every possible medical scenario. As a result, the statute directs agents to make decisions consistent with the patient’s known wishes, or if those wishes are not clear, according to the patient’s best interests.
In other words, the directive provides guidance—but the agent provides judgment.
That distinction becomes important when real-world medical decisions arise.
When Does the Agent’s Authority Begin?
Many clients assume that a health care agent automatically has authority the moment the directive is signed. In Virginia, that is generally not the default structure.
Most advance medical directives are written so that the agent’s authority becomes effective only when the patient is incapable of making or communicating an informed health care decision. This reflects the core principle of the Health Care Decisions Act: individuals retain full authority over their own medical decisions for as long as they have capacity.
However, Virginia law does not prohibit a directive from granting broader authority. A directive may authorize an agent to participate in or assist with health care decisions even while the patient still has capacity, if that is clearly expressed in the document.
In practice, most directives are structured so that the patient remains the primary decision maker while capable, with the agent stepping in only if incapacity arises. This structure protects patient autonomy while ensuring that someone has clear legal authority to act if the patient cannot.
Why Written Instructions Are Often Incomplete
Most advance directives include language addressing life-prolonging treatment, artificial nutrition and hydration, and similar interventions in the event of a terminal condition or persistent vegetative state.
But modern medicine rarely presents such cleanly defined circumstances.
Critical care physicians frequently encounter situations that fall somewhere in between: a patient whose condition is uncertain, a treatment that offers a small chance of recovery, or a clinical picture that evolves over time.
In those moments, the language in a directive may not perfectly match the medical reality.
I have seen this play out in conversations with families who believed the document would answer every question. Instead, it became a starting point for deeper interpretation.
For example, a directive might state that the individual does not want “extraordinary life-prolonging procedures” if recovery is unlikely. But what qualifies as extraordinary? And how unlikely must recovery be?
These are not legal questions alone. They are medical and deeply human questions.
Which is why physicians almost always turn to the health care agent.
When the Agent Interprets the Directive Differently
Imagine a scenario where a directive indicates that the patient would not want prolonged life support in a terminal condition.
But when the moment arrives, the attending physician explains that a particular intervention might provide a meaningful chance of recovery—even if the outcome is uncertain.
The health care agent must now interpret the directive through the lens of the patient’s broader values.
Did the patient prioritize longevity or quality of life?
Were they someone who would pursue every available treatment, or someone who preferred to avoid prolonged medical intervention?
What would they consider a meaningful recovery?
Virginia’s statutory framework implicitly acknowledges this dynamic. The law does not require agents to follow written instructions mechanically. Instead, it expects them to exercise substituted judgment—to step into the shoes of the patient and make the decision the patient would have made.
This is precisely why the choice of health care agent is so critical.
The Role Physicians Expect the Agent to Play
Medical professionals rarely treat advance directives as rigid instructions.
Instead, they often see them as evidence of the patient’s values, supplemented by conversations with the agent and family members.
In practice, physicians frequently ask the agent questions such as:
• What did your loved one say about situations like this?
• What would they consider an acceptable quality of life?
• Did they ever express views about long-term life support or institutional care?
The answers to those questions often carry more weight than the document itself.
That does not diminish the importance of the directive. Rather, it illustrates its true purpose: to guide the agent and medical team toward decisions that honor the patient’s wishes as faithfully as possible.
A Conversation I Remember Well
Several years ago, I spoke with a client whose father had recently faced a prolonged hospitalization. The family had a directive in place. They assumed it would remove uncertainty if difficult decisions arose.
Instead, when the crisis came, the document raised as many questions as it answered.
The directive addressed terminal illness but did not clearly address the specific medical situation the physicians were facing. The father had named one of his daughters as his health care agent, and the doctors ultimately relied heavily on her interpretation of his wishes.
What helped her navigate the situation was not the document alone—it was years of conversation with her father about how he viewed independence, dignity, and quality of life.
The directive provided legal authority. The conversations provided clarity.
Why Choosing the Right Agent Matters
Many people choose a health care agent based on family hierarchy—the oldest child, the spouse who manages household matters, or the person who lives closest.
But the role requires something more specific.
A good health care agent should be someone who:
• understands the patient’s values and preferences
• can process complex medical information under stress
• is willing to advocate for the patient’s wishes, even if others disagree
Equally important, the agent must be emotionally capable of making difficult decisions without being paralyzed by guilt or uncertainty.
This is not always the same person who would make an excellent trustee or financial agent.
Planning Beyond the Document
Advance directives are essential. They provide the legal authority needed to make medical decisions and offer important guidance about treatment preferences.
But they are not a substitute for thoughtful conversations.
The real strength of an advance directive lies in the combination of three things:
- A carefully drafted document
- A trusted and capable health care agent
- Open conversations about values, priorities, and medical preferences
When those elements work together, families are far better equipped to navigate difficult moments with confidence and clarity.
Planning for the Moment When Someone Must Speak for You
Estate planning often focuses on protecting assets and ensuring an orderly transfer of wealth. Those goals are important.
But incapacity planning asks a different question:
Who will speak for you when you cannot speak for yourself?
Virginia law provides a thoughtful statutory framework for answering that question. The challenge, as always, lies in the human side of the equation—choosing the right person and sharing enough about your values that they can truly represent your wishes.
Because when the moment comes, the document will guide the decision.
But the person you chose will make it.
Mary Ellen Bowman is the founder and Principal Estate Planning Attorney of The Bowman Firm, a Northern Virginia based firm focused on providing clear, strategic guidance to help families make confident decisions and avoid costly mistakes.