Evidence Code § 803

ARTICLE 1. Expert and Other Opinion Testimony Generally

Current as of September 28, 2026Evid. Code, § 803Official source ↗

Enacted by Stats. 1965, Ch. 299.

The court may, and upon objection shall, exclude testimony in the form of an opinion that is based in whole or in significant part on matter that is not a proper basis for such an opinion. In such case, the witness may, if there remains a proper basis for his opinion, then state his opinion after excluding from consideration the matter determined to be improper.