Medical error disclosure: what to say to a patient, step by step

The Joint Commission has required hospitals to tell patients about unanticipated outcomes since 2001, and physicians still, in the words of a JAMA study, "choose their words carefully." The gap isn't policy. It's that almost nobody has said the sentences out loud before the day they have to. Here are the words, the sequence, and the evidence.

Medical error disclosure is the conversation in which a clinician or organization tells a patient or family that an error or unanticipated outcome occurred, explains what happened and what is known about why, says what it means for the patient's health and what is being done, apologizes when the harm was preventable, and commits to preventing a recurrence.

What is medical error disclosure?

Medical error disclosure is telling a patient or family, promptly and in plain words, that something went wrong in their care: what happened, what is known about why, what it means for their health, what is being done now, and how a recurrence will be prevented, with a sincere apology when the harm was preventable. It is a conversation, usually several, not a form.

According to AHRQ's Patient Safety Network, the Joint Commission has required accredited hospitals to inform patients about unanticipated outcomes of care since 2001. The AMA Code of Medical Ethics, Opinion 8.6, tells physicians to "disclose the occurrence of the error, explain the nature of the (potential) harm," and adds that "concern regarding legal liability should not affect the physician's honesty with the patient."

AHRQ's CANDOR toolkit (Communication and Optimal Resolution) is the operational version: a process for responding "in a timely, thorough, and just way when unexpected events cause patient harm," the alternative to what AHRQ calls "deny-and-defend." Two neighbors cause confusion. SPIKES is for hard news that is nobody's error. Service recovery is for service failures. Disclosure is what both become when the failure is clinical; see the hub on why communication in healthcare fails.

What do patients want after a medical error?

Patients want to be told about every harmful error, and then four things: what happened, why it happened, how the consequences will be reduced, and how a recurrence will be prevented. They also want an apology. The list comes from Gallagher and colleagues' focus-group study in JAMA (2003).

The same study explains the gap. Physicians agreed harmful errors should be disclosed but "choose their words carefully": they often avoided saying an error had occurred, why, or how it would be prevented, and worried an apology would create liability. Patients heard the omission.

How to disclose a medical error: the CANDOR sequence

AHRQ's Disclosure Checklist, from CANDOR's Module 5, runs in two parts: the first hour, and the conversation that follows. One line of what to say at each step, on one fictional case: Robert Carter, 78, received his morning anticoagulant twice at shift change and is being monitored; his daughter Denise, his health-care proxy, has just arrived.

1. Within 60 minutes, say something

Within 60 minutes of identifying the event, tell the patient or family that an adverse event may have occurred, that the organization will investigate and share what it finds, that care comes first, and who their contact is. Say: "Denise, something happened with your father's medication this morning that shouldn't have. He's stable and being monitored. I'll explain what we know, and I'm your contact from here."

2. Get ready, and rehearse

Review the facts with the team, agree the goal, plan for the emotion you expect, anticipate the questions, and, in the checklist's words, "rehearse … the discussion with another CANDOR Disclosure Lead." Bring a colleague to help remember and document.

3. Set the stage

Phones off, a private room, sit down, and say why you're there: "I asked to sit with you so I can tell you exactly what happened and answer your questions."

4. Listen before you explain

Ask what she already knows and what worries her most, then let her finish. Acknowledge and validate: "You heard from his roommate before you heard from us. I'd be angry too."

5. Explain the facts, and only the facts

Name the event early and plainly, say what is known about why without speculating, say whether it was preventable if known, own your part, and never blame a colleague or "the system." Then what is being done now and what it may mean long-term. Say: "He received his blood thinner twice, once from each nurse at handoff. We don't yet know why the second dose wasn't caught. We're checking his bloodwork every four hours."

6. Apologize early

"I'm sorry this happened to your father." Sincere, early, unqualified. Not "I'm sorry you're upset."

7. If it was preventable, say what should have happened

For an error, the checklist adds two lines: what should have happened, and what will change. "The handoff should have included a check of the medication record. We're reviewing how that check failed, and we'll tell you what we change."

8. Close, debrief, document

Agree the next conversation. Answer the final questions, and promise the ones you can't: "I don't know yet, and I'll call you by Thursday with what we've learned." Then debrief with your colleague, and document only the facts of the conversation and the follow-up plan.

What not to say when disclosing an error

Most disclosure failures are sentences that felt safe in the moment.

1. Don't say: "The night shift should have caught it." Say: "The handoff didn't include a check that should have been there."

2. Don't say: "It was probably the new pump." Say: "We don't know why yet, and we won't guess."

3. Don't say: "He'll be fine." Say: "Right now he's stable. Here's what we're watching for."

4. Don't say: "I'm sorry you feel that way." Say: "I'm sorry this happened."

5. Don't say: "There was a medication administration discrepancy." Say: "He was given his blood thinner twice."

Does disclosing errors increase lawsuits?

The best evidence says no. After the University of Michigan Health System began fully disclosing errors and offering compensation, new claims fell from 7.03 to 4.52 per 100,000 patient encounters and lawsuits from 2.13 to 0.75, with liability costs down by more than half. Four Massachusetts hospitals with similar programs saw no worsening in any liability measure.

The Michigan numbers come from a before-and-after study in the Annals of Internal Medicine (2010); time to resolution also fell, from 1.36 to 0.95 years, and the authors note the design cannot prove causality, since claims were falling statewide anyway. The Massachusetts study, in Health Affairs (2018), compared four hospitals with peers: better trends at some, no change elsewhere, worse at none.

Apology laws are the other half of the question. Thirty-eight states had one by the count in a 2019 Stanford Law Review study by Viscusi, McMichael and Van Horn, which found the laws failed to reduce malpractice liability risk and, for non-surgeons, went with more claims and higher payments. I'd stop leaning on the statute either way. The AMA's position doesn't wait for one.

How teams rehearse disclosure

AHRQ built rehearsal into the toolkit: the checklist tells the Disclosure Lead to rehearse with another lead, and the case scenarios ask trainees to write "the exact words you would actually communicate." The failure mode in disclosure isn't ignorance of the policy. It's a sentence that comes out hedged because it has never been said aloud.

The checklist's key skills make the rubric: let the family speak, acknowledge the emotion, name the event without being probed, give direct answers, say "I don't know yet" with a plan, avoid jargon, check understanding. Score each done or not done and file it; the competency record that survives a surveyor is a filed artifact, not an attendance sheet.

Peer rehearsal works when a second Disclosure Lead is free. At 2 a.m. they aren't. In Trainio, a charge nurse can run the double-dose disclosure with a family-member persona who asks whether it was someone's fault, and get rubric feedback on whether she named the event early and apologized without blame. The card below is that conversation.