Addendum expert reports

An addendum report addresses a material development after the original opinion: new records, examination findings, treatment, a changed prognosis or a question that could not previously be answered. It should identify exactly what has changed and whether the original conclusion is affected.

Addendum report preparation

Report scope

What this report is for

An addendum report addresses a material development after the original opinion: new records, examination findings, treatment, a changed prognosis or a question that could not previously be answered. It should identify exactly what has changed and whether the original conclusion is affected.

The precise remit, documents and assumptions should be settled in the letter of instruction. An expert’s opinion is confined to their own discipline and the material provided.

Instruction requirements

A focused route to usable evidence

The original author is often best placed to address the development. Where a new discipline or question is needed, the instruction should say so expressly.

01

Defined questions

Identify the issues the report is asked to address.

02

Relevant records

Provide the material needed to form a properly bounded opinion.

03

Transparent assumptions

Separate facts assumed for the purpose of the report from clinical findings.

04

Independent opinion

The expert’s duty and the applicable procedural rules remain central.

Use the register to identify a suitable discipline, then agree the scope directly.

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Related routes

Where this report sits

condition and prognosis reports and records review reports may be relevant before, alongside or after this report, depending on the issue and stage of the matter.

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Addendum expert reports