Misdiagnosis claims in Georgia medical malpractice

A wrong diagnosis is malpractice in Georgia only if a qualified expert says the provider’s reasoning or reading fell below the standard, and that the error probably changed the outcome. The most dangerous fact in these cases is timing. The Supreme Court of Georgia said in Amu v. Barnes that the injury in a misdiagnosis case generally begins at the misdiagnosis, even if the patient learns of it years later. That can use up the two-year period before anyone knows.

When the clock starts

O.C.G.A. § 9-3-71(a) runs from the injury, and there is no discovery rule. Amu v. Barnes, 283 Ga. 549 (2008), quotes the principle: “The misdiagnosis itself is the injury and not the subsequent discovery of the proper diagnosis.”

Situation	When the two years start	Authority
Existing condition misdiagnosed and mistreated, same condition throughout	At the misdiagnosis, generally	Kaminer v. Canas, as discussed in Amu
Benign and treatable condition that becomes a much more serious one, after a period with no symptoms	When symptoms of the new injury appear	Amu; Whitaker v. Zirkle, discussed in Amu
Any case	No later than five years from the act for the outer limit	§ 9-3-71(b)

The “new injury” exception is limited. Amu says it does not apply when the evidence shows only that the “existing condition was misdiagnosed and mistreated”. It also relies on a period without symptoms. A person with continuing symptoms should not assume the rule helps. The article on limitation and repose has the full calculation.

The difference from a delayed diagnosis

Both claims concern a condition that was not recognized when it could have been. A misdiagnosis gives a wrong answer. A delay reaches the right answer late, perhaps because no one ordered the test. The same limitation rule applies. Delayed diagnosis claims covers the second kind, and failure to treat claims covers a correct diagnosis with no action.

What an expert looks at

Whether a diagnosis fell below the standard is measured by what was “ordinarily employed by the medical profession generally” under like circumstances, as stated in Johnson v. Riverdale Anesthesia Associates. An expert may work through these questions:

• What did the history, exam, and test results show at that time?
• What conditions should have been considered?
• Which test or consultation would have separated them?
• Was any test read correctly?
• What follow-up was arranged in case the working diagnosis was wrong?

Hindsight is a defense answer, and a diagnosis that looks obvious after the fact may not have been obvious at the time. A provider’s choice among accepted approaches is protected under the respectable minority rule.

Imaging and pathology

Imaging is one type of diagnosis where the original can be re-read, because the file still exists. A blinded review, in which the second reader is not told what happened later, can reduce the hindsight objection. It is a litigation choice to discuss with counsel. The clinical information given to the radiologist also matters, because the answer depends on what was asked. Requests should include the images themselves and not only the report.

Emergency departments

An emergency visit can bring in O.C.G.A. § 51-1-29.5(c), which requires clear and convincing evidence of gross negligence for “emergency medical care” in an emergency department. So a missed heart attack in an emergency department may be judged differently from a missed one in an office. The statute’s definition of emergency care has limits, covered in emergency room malpractice claims.

What the delay changed

Zwiren v. Thompson requires an opinion stronger than medical possibility. For a cancer, that means what stage the disease probably was at the time, and what treatment would probably have done. For a stroke or heart attack, it means whether the person was a candidate for a treatment that depends on timing. Averages can inform that opinion, but it has to apply to this patient. See causation challenges.

What a patient can do early

• Write down the date of each visit, and the first date anything got worse.
• Ask for complete records, including imaging. The Georgia and federal request rules are on the medical records page.
• Do not assume the clock starts with the new diagnosis.
• If a public hospital may be involved, check the notice rules right away.

Sources

• Official Code of Georgia Annotated, November 2022 public release: §§ 9-3-71, 51-1-29.5
• Amu v. Barnes, 283 Ga. 549
• Johnson v. Riverdale Anesthesia Associates, 275 Ga. 240
• Zwiren v. Thompson, 276 Ga. 498

This page was last reviewed in November 2026 for general information. Laws and court decisions can change after that date. It is not legal advice and does not create an attorney-client relationship.