# Ohio — Medical malpractice certificate/affidavit of merit requirements by US state — quoted from the state statute or court rule

For Ohio, document required is affidavits of merit; filing deadline is shall be accompanied by one or more affidavits of merit relative to each defendant named in the complaint; who must sign is an expert witness meeting the requirements of Evid.R. 702 and, if applicable, also meeting the requirements of Evid.R. 601(B)(5); consequence of non-compliance is shall operate as a failure otherwise than on the merits; statute or rule citation is Civ.R. 10(D)(2), recorded from its source on 2026-09-02.

- **State:** Ohio _(our reading, not quoted from the source)_
- **Document required:** affidavits of merit _(verified: appears in its own passage below)_
- **Filing deadline:** shall be accompanied by one or more affidavits of merit relative to each defendant named in the complaint _(verified: appears in its own passage below)_
- **Who must sign:** an expert witness meeting the requirements of Evid.R. 702 and, if applicable, also meeting the requirements of Evid.R. 601(B)(5) _(verified: appears in its own passage below)_
- **Consequence of non-compliance:** shall operate as a failure otherwise than on the merits _(verified: appears in its own passage below)_
- **Statute or rule citation:** Civ.R. 10(D)(2) _(our reading, not quoted from the source)_

## What the source says

> a complaint that contains a medical claim, dental claim, optometric claim, or chiropractic claim, as defined in R.C. 2305.113, shall be accompanied by one or more affidavits of merit relative to each defendant named in the complaint for whom expert testimony is necessary to establish liability.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Document required

> a complaint that contains a medical claim, dental claim, optometric claim, or chiropractic claim, as defined in R.C. 2305.113, shall be accompanied by one or more affidavits of merit relative to each defendant named in the complaint for whom expert testimony is necessary to establish liability.

### Filing deadline

> a complaint that contains a medical claim, dental claim, optometric claim, or chiropractic claim, as defined in R.C. 2305.113, shall be accompanied by one or more affidavits of merit relative to each defendant named in the complaint for whom expert testimony is necessary to establish liability.

### Who must sign

> Affidavits of merit shall be provided by an expert witness meeting the requirements of Evid.R. 702 and, if applicable, also meeting the requirements of Evid.R. 601(B)(5).

### Consequence of non-compliance

> Any dismissal for the failure to comply with this rule shall operate as a failure otherwise than on the merits.

## Source

- https://www.supremecourt.ohio.gov/LegalResources/Rules/civil/CivilProcedure.pdf

Last verified: 2026-09-02. Review by: 2027-09-02.
Part of [Medical malpractice certificate/affidavit of merit requirements by US state — quoted from the state statute or court rule](https://referencesource.org/medical-malpractice-certificate-of-merit-by-state/).