chart lore

Chart lore is the phenomenon in which unverified information in a medical record comes to be treated as fact through repetition.

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Chart lore occurs when an unverified assertion in a patient's medical record is copied or repeated until it is treated as an established fact. Here, “chart” means the medical record, not a graph.

An AI system summarizing records or extracting diagnostic evidence may carry forward an unverified assertion already in the record. Unlike a hallucination that introduces a claim absent from the source, chart lore concerns the reliability of information present in the source.

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Another problem is chart lore: an unverified assumption repeated across clinical notes until it appears to have a substantial history behind it.


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