What Is an Independent Medical Examination (IME)?

James Wong — Founder & Pharmacist, LienScripts | March 20, 2024 | 7 min read

An Independent Medical Examination (IME) is a medical evaluation ordered by the defense or insurer to assess the plaintiff's injuries. Despite the word 'independent,' these exams often favor the requesting party. Knowing how they work — and how pharmacy records counter IME opinions — is critical for PI attorneys.

This post is for informational purposes only and does not constitute legal advice.

The Defense's Medical Examination

An Independent Medical Examination (IME) — also called a Defense Medical Examination (DME) in some states — is a medical evaluation of the plaintiff conducted by a physician selected and paid by the defense or the insurance company. It is framed as "independent," but in practice, IME physicians are retained specifically to assess whether the plaintiff's claimed injuries are as severe as alleged.

IMEs are a standard tool in personal injury litigation, and understanding how they are used — and how to counter their conclusions — is essential for PI attorneys and their clients.

[!KEY] An IME is a defense-ordered medical evaluation conducted by a physician paid by the insurer — despite the word "independent," these exams systematically minimize injury severity, and the treating physician's documented clinical record is the most effective counter.

Why Defendants Request IMEs

When a plaintiff claims serious injuries requiring extensive treatment, the defendant's insurance carrier has a financial interest in challenging the extent of those injuries. An IME serves several tactical purposes:

Challenging medical necessity. The IME physician may opine that certain treatments — including medications — were not medically necessary for the alleged injuries.

Attributing injuries to pre-existing conditions. IME physicians often note pre-existing degenerative changes in imaging (arthritis, prior disc herniations, etc.) and attribute current complaints to those conditions rather than the accident.

Establishing maximum medical improvement early. If the IME physician opines that the plaintiff reached maximum medical improvement (MMI) at an earlier date than treating physicians believe, it limits future care claims.

Reducing pain and suffering. An IME opinion minimizing the severity of injuries directly attacks the plaintiff's pain and suffering damages.

Who Performs IMEs and What They Actually Do

IME physicians are typically specialists — orthopedic surgeons, neurologists, neurosurgeons, pain management physicians — who derive significant income from performing these evaluations. They review the plaintiff's medical records (though not always all of them), conduct a physical examination (typically brief, often 15–45 minutes), and produce a written report.

Key characteristics of typical IME reports:

• Often opine that the plaintiff's injuries are less severe than claimed.
• Frequently attribute ongoing complaints to pre-existing conditions.
• Sometimes opine that treatment should have ended earlier.
• May dispute specific medications as unnecessary or excessive.
• Rarely, if ever, find injuries that are more severe than what the treating physician documented.

The defense industry has a network of IME physicians known to produce favorable defense opinions. Plaintiffs' attorneys often recognize the same names repeatedly across different cases.

How to Counter an Unfavorable IME

The plaintiff's treating physicians' opinions carry strong weight — they examined the patient regularly over the course of treatment, not once for 30 minutes. An IME physician reviewing records for a brief evaluation cannot substitute for the accumulated clinical judgment of treating providers.

Use the pharmacy record as objective evidence. An IME physician's opinion that "the plaintiff did not need this treatment" is directly rebutted by the prescribing physician's documented clinical judgment. The pharmacy record — showing dates, medications, diagnoses, and prescribers — provides a dated, objective treatment trail that predates any litigation-motivated examination.

The MERIT report is a powerful counter-document. A MERIT report from LienScripts creates a clinical narrative of the entire pharmaceutical treatment course — why each medication was prescribed, what clinical problem it addressed, and what outcomes were observed. This narrative is far more detailed than an IME report and far harder to dismiss.

Request the IME physician's history. In California, IME physicians can be asked in deposition about their income from defense work, their typical opinions, and their track record. Demonstrating that the physician earns the majority of their income from defense IMEs — and consistently produces defense-favorable opinions — undermines the "independent" characterization.

Schedule a rebuttal examination. The plaintiff's treating physician can submit a rebuttal report specifically addressing the IME's conclusions, supported by the treating physician's full medical record and treatment notes.

[!TIP] For Attorneys: When an IME report challenges specific medications as unnecessary, respond with the MERIT report from LienScripts — a pharmacist's dated, signed clinical narrative of why each drug was prescribed carries far more weight than a 20-minute evaluation by a defense-retained physician.

Pharmacy Records and IME Challenges to Medication

IME physicians commonly challenge specific medications in their reports:

• Arguing that a muscle relaxant was prescribed for too long.
• Questioning whether a nerve pain medication was appropriate for the diagnosed injury.
• Claiming that opioid medications were prescribed in excess of clinical guidelines.

Each of these challenges can be rebutted with the prescribing physician's clinical notes and the MERIT report explaining the clinical rationale. A medication that was continued for 12 months because the patient's pain and functional limitations persisted — documented in the pharmacy record and MERIT narrative — is not "excessive" based on a 20-minute IME.

[!KEY] An IME report challenging specific medications is most effectively countered by showing that each prescription was written by a treating physician with ongoing patient contact, supported by dated diagnosis codes — neither of which the IME physician, who saw the patient once for 20 minutes, can replicate or dismiss.

For a deeper look at defending pharmacy liens against medical necessity attacks, see our posts on why pharmacy liens get challenged on documentation and adjuster attacks on pharmacy liens and how to rebut them.

IMEs in Workers' Compensation vs. Personal Injury

In California workers' compensation cases, the equivalent of an IME is a Qualified Medical Evaluation (QME) or Agreed Medical Evaluation (AME) — conducted by physicians from a panel selected through the DWC. The QME/AME system has different rules and procedures than civil litigation IMEs.

In personal injury cases outside workers' comp, the defendant in litigation may notice a defense medical examination under California Code of Civil Procedure § 2032. The plaintiff generally has the right to have their attorney present (though not to object) and may record the examination.

[!KEY] Preparing the plaintiff for the IME should include reviewing every medication in the pharmacy record so the plaintiff can accurately describe their medication history — inconsistencies between the plaintiff's IME testimony and the pharmacy record are exactly the type of discrepancy defense counsel uses to challenge credibility.

Key Takeaway

An IME is a defense tool designed to challenge injury severity, medical necessity, and treatment duration. Despite being called "independent," IME physicians are retained and compensated by the defense. The most effective counters are the plaintiff's own treating physicians' documented clinical opinions, a comprehensive pharmacy treatment record, and a MERIT report that narrates the clinical rationale for each medication throughout the course of treatment.