What NOT to Do When You're Sued: Defense-Killing Mistakes Physicians Make

By John Mahoney · June 2026 · 10 min read

Most malpractice cases are not won or lost on the medicine. They are won or lost on a much smaller, much more controllable set of behaviors — and a striking number of otherwise defensible cases are sunk not by the underlying care but by something the defendant did after being sued. The good news in that is also the warning: the most dangerous mistakes are entirely avoidable, because they are self-inflicted. This is the catalog of defense-killers — the things a defendant physician must not do — and why each one does so much damage.

It helps to start from the structural reality. Roughly 78% of malpractice claims close with no payment (Jena et al., New England Journal of Medicine, 2011), and when claims with an identifiable error are compared to claims without one, payment tracks merit a substantial majority of the time — in one major study, about 73% of error claims were paid and about 72% of no-error claims were not (Studdert et al., NEJM, 2006). In other words, sound care that is honestly documented and competently defended is in a strong position. The mistakes below are dangerous precisely because each one can take a defensible case and convert it into a payable one.

This article is for educational purposes only and is not legal advice. From the moment you are aware of a claim or potential claim, your conduct should be directed by your malpractice carrier and your retained defense counsel. The points below are general cautions, not a substitute for your attorney's case-specific guidance.

Mistake #1: Altering, Adding to, or Backdating the Record

This is the single most catastrophic mistake, and it deserves to be first and unmistakable: never change the medical record after you learn of a claim or potential claim — do not alter it, add to it, delete from it, backdate it, or "clarify" it. The impulse is deeply human. You remember doing something the chart doesn't capture; you want to add the rationale you were too rushed to write at the time. Do not.

The damage is twofold. Practically, modern records are timestamped and audit-logged, so a late edit is almost always discoverable — and the moment it surfaces, the case stops being about your clinical judgment and becomes about your honesty. Juries forgive a difficult clinical call far more readily than they forgive a doctor who appears to have tampered with evidence. The data underline the stakes from the other direction: closed-claims research consistently finds that documentation problems substantially raise the odds a claim is paid — and a record that was altered is the worst possible version of a documentation problem, because it manufactures the appearance of guilt where the underlying care may have been fine.

The legitimate version of the instinct — reconstructing the timeline and recovering the clinical reasoning — is not only allowed but essential. It simply belongs in your privileged preparation with counsel, where your recollection becomes testimony, not in the chart, where it becomes an exhibit against you.

Mistake #2: Saying Anything on Social Media (or in Writing Anywhere)

A second self-inflicted wound: posting about the case, the patient, the lawsuit, or even your stress, on any platform. A vented frustration on social media, a "you wouldn't believe what I'm dealing with" message, an oblique reference in a forum — all of it is discoverable, none of it is privileged, and every word can be read back to a jury stripped of its context and tone. The reverse is also true: be mindful of your existing public footprint, because opposing counsel will look. The only safe posture once you are sued is silence in every public and semi-public channel. Assume anything you write that is not to your attorney can end up as an exhibit.

Mistake #3: Talking to the Patient, the Family, or Potential Witnesses

The urge to reach out — to explain, to apologize, to make it right — is understandable and often comes from a genuinely good place. But once litigation has begun, contact with the plaintiff or their family must go through counsel, and informal conversations about the case with colleagues who could become witnesses are their own hazard. Communications with your spouse and your attorney carry protections; a candid conversation in the doctors' lounge with a colleague who later testifies generally does not. What feels like processing or seeking support can become impeachment material.

This is genuinely painful, because the research on why patients sue suggests that honest communication and acknowledgment matter enormously to them — the decision to litigate is frequently driven as much by feeling deserted, dismissed, or denied an explanation as by the clinical outcome itself (Beckman et al., 1994; Vincent et al., 1994). Some health systems run structured communication-and-resolution or disclosure programs precisely to address this in a managed, protected way. The lesson is not that communication doesn't matter — it is that, once a claim exists, communication with the other side happens through your attorney and your institution's program, never freelanced.

Mistake #4: Overconfidence and Arguing on the Stand

The next defense-killer happens in the chair. Many physicians walk into a deposition or trial determined to project total certainty and to win — to out-argue the lawyer, to dominate, to dig in. This backfires on two distinct levels.

First, on credibility. The research on how decision-makers read confidence is counterintuitive: the relationship is curvilinear, an inverted U — medium confidence is rated the most credible, while both low confidence and maximum confidence score worse (work associated with Cramer and Brodsky on witness credibility). The witness who answers everything as if beyond all doubt reads not as authoritative but as overreaching, and comes across as less believable, not more. Likability runs the same way and asymmetrically: being disliked is heavily penalized, while extra charm adds little — so arrogance and combativeness are pure downside. (A caveat worth stating: much of this research comes from forensic-psychology and mock-juror settings rather than malpractice trials with physician defendants, so treat it as a directional principle, not a precise dial.)

Second, on substance. Absolute language — "always," "never," "absolutely" — is a gift to the cross-examiner, who needs only a single counterexample to detonate an overstated answer and undercut everything around it. And arguing with the questioner pulls you off the disciplines that actually protect a witness: answer only what is asked, then stop; never volunteer; stay the calm teacher. The defendant who tries to argue the case from the witness chair almost always loses ground; the one who stays narrow, calibrated, and composed holds it. We cover this craft in depth in our guide on how a defendant physician should prepare to testify.

Mistake #5: Going It Alone

The final mistake is the quiet one: trying to manage the case yourself, minimizing it, delaying notice to your carrier, or holding back the facts that worry you from your own attorney. Each version forfeits the very thing that wins defensible cases — competent, coordinated defense.

• Delaying notice to your carrier. Most policies require prompt reporting, and late notice can complicate — or in some circumstances jeopardize — coverage, on top of robbing the defense of time. Report immediately.
• Holding back from your attorney. The conversation that went badly, the note you'd write differently, the result you wonder whether you missed — tell your lawyer all of it. Attorney-client privilege exists so you can be candid, and a weakness your attorney knows about is one they can prepare for. A surprise sprung by the other side mid-deposition is the one that does real damage.
• Skipping real preparation. Treating your deposition as something you can wing because you "know the medicine" is how excellent clinicians hand the other side admissions. Testifying is a separate skill that rewards rehearsal.
• Ignoring the emotional toll. The "second victim" strain is real, and toughing it out in isolation degrades both judgment and well-being. Use protected support — spouse, attorney, confidential physician-wellness and peer-support resources.

None of this means you are passive. The opposite: the strongest defendant is the one who does the controllable things relentlessly — reports fast, preserves the record exactly, tells counsel everything, prepares hard, and stays disciplined — while letting the professionals run the parts that are theirs to run.

The One-Line Version of Each Rule

1. Never touch the record. Reconstruct with counsel; never edit, add, or backdate.
2. Say nothing publicly. No social media, no written venting — all of it is discoverable.
3. Route all contact through counsel. No freelance conversations with the patient, family, or potential witnesses.
4. Don't try to win from the chair. Calibrated confidence, no absolutes, no arguing — be the calm teacher.
5. Don't go it alone. Report fast, disclose everything to your attorney, prepare hard, and use protected support.

Bottom Line

A defensible malpractice case — and most are — is most often lost by the defendant's own avoidable acts, not by the medicine. Never alter, add to, or backdate the record; it is discoverable and it turns a clinical question into a question of integrity. Say nothing on social media or in any writing that isn't to your attorney. Route every contact with the patient, family, or potential witnesses through counsel. Resist the urge to project total certainty or argue from the witness chair — overconfidence reads as less credible and absolutes detonate on cross. And do not go it alone: report to your carrier immediately, tell your attorney everything, prepare hard, and lean on protected support. Avoid the self-inflicted wounds, do the controllable things well, and you let the structural odds — which favor sound, honest, well-defended care — work for you.

For the full road map of the early case, see our step-by-step survival guide for the first 90 days; for the craft of the testimony itself, see how a defendant physician should prepare to testify.

Questions? Contact us at [email protected] or (856) 979-6525