Shared decision making is a collaborative process where you and your clinician work together to choose a course of care, combining medical evidence with your personal values, goals, and circumstances. Rather than your doctor simply telling you what to do or handing you a list of options and walking away, it’s a back-and-forth conversation where both sides contribute expertise. Your clinician brings knowledge of treatments, risks, and evidence. You bring knowledge of your own life, preferences, and what matters most to you.
How It Differs From Informed Consent
Most people have experienced informed consent: a doctor explains a procedure, lists the risks, and asks you to sign a form. That process has historically focused on whether the doctor disclosed the right information, not on whether you actually understood it or had a say in the decision. In many jurisdictions, the legal standard for what counts as adequate disclosure is still based on what other physicians would typically share, not on what a reasonable patient would want to know.
Shared decision making goes further. It treats your consent not as a signature on a form but as an ongoing conversation. The emphasis shifts from “did the doctor mention the risks?” to “does the patient understand the tradeoffs, and does this choice reflect what they actually want?” It sits between two extremes: the old paternalistic model where the physician decides for you, and a pure autonomy model where you’re left to figure things out alone. In shared decision making, neither side has all the answers, and both participate in reaching a decision.
The Three Conversations
One widely used framework breaks shared decision making into three distinct stages of conversation, sometimes called “team talk,” “option talk,” and “decision talk.”
In the first stage, your clinician lets you know that a genuine choice exists. This matters because many patients assume there’s only one correct path forward. The clinician also asks about your broader health goals and what you’re hoping to achieve, which sets the direction for everything that follows.
The second stage is where you and your clinician compare the available options side by side. This means discussing the benefits and harms of each, using clear language and, when possible, actual numbers rather than vague terms like “low risk.” The goal is for you to walk away with a realistic picture of what each option involves.
In the final stage, you arrive at a decision together. Your clinician checks that the choice reflects your informed preferences, not just a reflexive “whatever you think, doc.” This is where your values carry the most weight. Two patients with the same diagnosis and the same options can reasonably choose differently based on what matters to them.
When It Matters Most
Shared decision making is especially important for what are called “preference-sensitive” decisions, situations where there’s more than one medically reasonable option and the right choice depends heavily on how you weigh the tradeoffs. These are more common than most people realize.
- Surgery choices: Minimally invasive surgery versus conventional open surgery, where you’re weighing a potentially longer operating time against less blood loss and faster recovery.
- Heart conditions: Choosing between device-based treatments and blood-thinning medications for atrial fibrillation, or between an implantable defibrillator and medication for heart failure.
- Cancer treatment: Deciding between focal ablation and lumpectomy for breast cancer, or weighing quality of life against survival time for other cancers.
- Neurological conditions: Considering implanted brain stimulators versus other treatment approaches.
- Screening and diagnostics: Choosing between different types of screening tests for conditions like colon cancer or prostate cancer, each with different accuracy, invasiveness, and comfort levels.
In all of these cases, the “best” option isn’t determined by the evidence alone. It depends on how you feel about the risks involved, how much disruption you’re willing to tolerate, and what your long-term priorities look like.
Why Medicare Now Requires It for Some Procedures
Shared decision making isn’t just a philosophy. For certain procedures, it’s a requirement. Medicare has mandated documented shared decision making encounters before it will reimburse two cardiovascular therapies: left atrial appendage closure (a procedure to reduce stroke risk in people with an irregular heartbeat) and primary prevention implantable defibrillators for patients with heart failure.
For the appendage closure procedure, the requirement is specific: you must have a formal conversation with an independent physician who is not performing the procedure, using an evidence-based decision tool about blood-thinning options. That conversation has to be recorded in your medical chart. For the defibrillator, a similar structured encounter must happen with a physician or qualified practitioner before the device is implanted, and it can take place at a separate visit to give you time to consider the information.
These mandates signal a broader shift. When a federal payer requires proof that a patient was meaningfully involved in the decision, it changes what clinics prioritize.
Tools That Support the Process
Decision aids are tools designed to help you compare your options outside the time pressure of a clinic visit. They come in many formats: printed booklets, videos, interactive websites, or apps. Good ones present the benefits and harms of each option using numbers rather than vague language, and they prompt you to think about which tradeoffs matter most to you.
An international collaboration called IPDAS sets quality standards for these tools, establishing criteria for their content, how they’re developed, and how they’re evaluated. The goal is to ensure that a decision aid you encounter is balanced, evidence-based, and not subtly steering you toward one option. One ongoing challenge is keeping these tools current as treatments evolve and new evidence emerges.
There are also questionnaires designed to measure whether shared decision making actually happened in a clinical encounter. The most widely used is a nine-item survey where patients rate statements about their experience on a scale from “completely disagree” to “completely agree.” Each item maps to a specific step in the process, such as whether the clinician explained that a decision needed to be made, whether options were clearly described, and whether your preferences were asked about. Scores range from 0 to 45, with higher scores indicating more involvement. This kind of measurement helps health systems identify where the process is working and where it’s falling short.
Why It’s Still Hard to Do Well
Despite broad agreement that patients should be involved in their care decisions, implementation remains uneven. Many clinicians support the idea in principle but aren’t sure how to make it work in a 15-minute appointment. Medical training historically prepared doctors to recommend a course of action, not to facilitate a two-way conversation. Local practice norms and personal experience can also shape what a doctor recommends, sometimes more than the evidence does.
There’s also a relational shift involved that can feel unfamiliar to both sides. Shared decision making requires clinicians to step back from the role of sole authority, and it asks patients to step into a more active role than many are used to. Some patients prefer to be told what to do, especially when they’re anxious or overwhelmed. The process works best when clinicians can recognize that preference and gently provide the support needed for patients to engage, rather than simply defaulting to the old model.
Cost conversations add another layer. In one study of clinical encounters that used shared decision making tools, discussions about cost came up in 70% of visits, and they were more likely to happen when a decision aid was used. This suggests that structured tools can open the door to practical concerns that patients might otherwise hesitate to raise. The financial reality of a treatment is, for many people, a core part of the decision, not a side issue.