When to Request an IME Report Addendum

An IME report addendum is worth requesting when it can clarify a material medical opinion, correct a factual assumption, or address records the examiner did not have when the original report was prepared. It is not a second bite at the apple every time the report lands poorly for your position.

For attorneys, the practical question is narrower: will an addendum make the medical opinion more usable in discovery, settlement evaluation, mediation, hearing, or trial? If the answer is yes, the request should be prompt, specific, and tied to the issues the examiner was asked to evaluate through an Independent Medical Examination.

What an IME Report Addendum Is

The addendum should extend the report, not replace it

An addendum is a supplemental medical opinion connected to an existing IME report. It may answer a missed question, address new records, correct a factual misunderstanding, or explain how the examiner reached a conclusion.

The original report remains part of the file. The addendum should make the record clearer, not create confusion about which opinion controls.

Clarification is different from persuasion

A strong addendum request does not argue the case to the examiner. It identifies the gap and asks for a medical explanation. That distinction matters because some jurisdictions restrict communications about the substance of an IME report. New York’s Workers’ Compensation Board, for example, states that an addendum request requires an IME-3 submission with the examiner’s signature and describes that process as the permitted route for communication about report content.

The record should show why the addendum was needed

Before requesting an addendum, confirm that the need is visible from the file. New imaging, omitted operative notes, an unanswered causation question, inconsistent work restrictions, or a missing impairment analysis can justify follow-up. General dissatisfaction rarely does.

The request should be tied to case use

An addendum is most valuable when it changes how the report can be used. If the report is headed into expert disclosure, mediation, hearing exhibits, or deposition preparation, ambiguity can become expensive.

Discovery deadlines can make timing decisive

Federal Rule of Civil Procedure 26 treats expert disclosure as an ongoing obligation when a party learns that prior disclosure is incomplete or incorrect in a material way. Rule 35 also addresses examiner reports after physical or mental examinations. Those rules are not a universal addendum playbook, but they show why attorneys should think about addenda before deadlines close.

A late request may create more problems than it solves

Waiting until the eve of deposition or hearing can make the addendum look tactical. It can also leave too little time for the examiner to review records carefully. When MLP IME coordinates medical expert witness services, the stronger approach is to identify addendum needs while the report can still be refined in an orderly way.

When an Addendum Request Is Usually Appropriate

New records change the medical picture

The cleanest reason to request an addendum is that the examiner did not have material records. Examples include post-IME surgery notes, updated imaging, specialist consultations, functional testing, surveillance that raises a specific medical question, or a treating physician opinion issued after the examination.

The records should be material, not merely additional

Do not send a stack of new records and ask whether anything changes. Identify the pages, dates, and medical issue. For example, ask whether a new lumbar MRI changes the examiner’s prior apportionment opinion or whether a post-exam operative report affects maximum medical improvement.

The question should be framed medically

A useful question sounds like this: please review the attached operative report dated March 14 and state whether it changes your opinion on diagnosis, causation, restrictions, or future care. That is very different from asking the examiner to make the report stronger for summary judgment.

The report leaves a material question unanswered

Many addendum requests arise because the referral letter asked a question and the report did not answer it. That can happen even in a well-run examination, especially when the record is large or the issues are layered.

Match the request to the original referral

If the original referral asked about causation, permanency, work restrictions, impairment, future treatment, or need for additional diagnostics, the addendum should point back to that question. This keeps the request grounded in the assignment rather than expanding the examiner’s role after the fact.

Separate silence from disagreement

An unanswered question is a legitimate addendum issue. An unfavorable answer is not, by itself, a reason to ask again. If the answer is present but unsupported, ask for the basis. If the answer is simply bad for the client, address it through cross-examination, rebuttal, or a separate expert strategy.

The report contains a factual error that affects the opinion

Some factual errors are harmless. Others can affect causation, restrictions, impairment, or credibility analysis. The difference should drive the addendum decision.

Correct material assumptions

If the report says the claimant had no prior shoulder complaints, but the records show a documented pre-incident shoulder injury, an addendum may be necessary. If the report misstated the date of a routine visit that has no bearing on the opinion, the better choice may be to leave it alone.

Provide the correction without editorializing

Send the record excerpt, cite the date, and ask whether the correction changes any stated opinion. The best addendum requests are precise enough that the examiner can respond without guessing what counsel wants.

When to Think Twice Before Requesting an Addendum

The request would look like coaching

A weak addendum request asks the examiner to reconsider until the answer improves. That creates discoverability and credibility risk. It can also hand opposing counsel a clean cross-examination theme.

Avoid advocacy language

Do not write that the report should be revised because the claimant is not credible, the opposing expert is wrong, or the defense needs stronger language. Ask medical questions. Let the physician explain the medical reasoning.

Assume the request may be examined later

Even where communications have some protection, attorneys should write addendum requests as if a judge, opposing counsel, or claims professional may eventually read them. That does not mean being vague. It means being disciplined.

The better tool is a peer review or rebuttal expert

An addendum is not always the right next step. If the report is internally consistent but you need a second physician to evaluate opposing medical theories, a peer review or expert consultation may be more useful.

Use addenda for the same examiner’s unfinished work

Ask the original examiner to clarify, correct, or update the original opinion. Use a separate review when the problem is broader, such as competing diagnoses, specialty mismatch, or a need to critique another expert’s methodology.

Do not overload the examiner’s assignment

If the addendum request turns into a new examination by correspondence, pause. A new IME, records review, or specialty-specific expert may be cleaner.

The timing would disrupt the case schedule

Some addenda are time-sensitive because deadlines are close. Others create avoidable delay. California’s medical-legal evaluation rules, for example, set time frames for supplemental reports in the QME and AME context. Other jurisdictions and case types may work differently, so attorneys should check the controlling rule before assuming an addendum can be turned around informally.

Build addendum review into the case calendar

When the report arrives, review it against the original questions, key records, expert disclosure dates, mediation dates, deposition notices, and hearing deadlines. That review should happen before the report is treated as final.

Ask for realistic turnaround

A rushed addendum can be worse than no addendum. If the examiner needs to review imaging, records, or prior testimony, give the physician enough time to do the work properly.

How to Draft a Clean Addendum Request

Start with a short issue list

A good request begins with a limited list of issues. Three targeted questions usually beat twelve broad ones. The examiner should be able to see exactly what needs attention.

Identify the original report and assignment

Include the report date, examinee name, claim or case identifier, and the issue from the original referral letter. If MLP IME helped coordinate the original examination, this also helps the administrative team route the request to the correct physician quickly through MLP IME’s contact page.

Attach only what matters

If you provide new records, identify them by date and title. If the record set is large, note the specific pages that drive the question. Do not make the examiner hunt for the point.

Use neutral medical questions

The addendum request should read like a request for a professional medical opinion. It should not read like a draft cross-examination outline.

Better question formats

Ask whether a new record changes the examiner’s opinion. Ask for the basis of a restriction. Ask the examiner to address a specific diagnosis, treatment recommendation, or functional limitation. Ask whether the stated opinion remains the same after review of a newly supplied record.

Question formats to avoid

Avoid requests that tell the examiner what conclusion to reach. Avoid adjectives that argue the case. Avoid asking for stronger language unless the problem is truly that the report used unclear wording.

A Practical Attorney Checklist

Review the report before deciding

Use a short checklist when the report arrives. It keeps the addendum decision focused and reduces the chance of unnecessary follow-up.

Addendum triggers

Consider an addendum when the report omits a referral question, relies on a material factual mistake, fails to address key records, contains unclear restrictions, does not explain causation, leaves impairment or permanency incomplete, or needs to account for new records.

Non-addendum triggers

Do not request an addendum simply because the opinion is unfavorable, because another expert disagrees, because the report lacks litigation language, or because counsel wants a more forceful tone.

Document the decision

Whether you request an addendum or not, record why. A short case note can explain that the report was reviewed against the referral letter, controlling deadlines, and material records.

If you request one

Save the request, attachments, transmittal date, and response deadline. Track whether the examiner answered each question.

If you do not request one

Note whether the issue is better handled by deposition, rebuttal, peer review, updated discovery, or no action. That discipline helps later if the report becomes central to negotiation or motion practice.