Wilson v. Blue Cross of Southern California, 222 Cal. App. 3d 660, 271 Cal. Rptr. 876 (Cal. Ct. App. 1990)
Wilson v. Blue Cross of Southern California is a cornerstone California insurance bad-faith case addressing the legality of rescinding an individual health insurance policy after a claim arises—a practice commonly known as "post-claims underwriting." In an era before significant statutory reforms, some health insurers engaged in a practice of conducting only minimal underwriting at the application stage and then, upon receipt of a large claim, scouring the insured's application and medical history to identify grounds for rescission.
Whether Blue Cross could lawfully rescind Wilson's individual health insurance policy after a claim based on alleged application misrepresentations, where the application questions were ambiguous, the insurer's agent filled out the form, and Blue Cross failed to conduct a reasonable pre-issuance investigation—i.e., whether such post-claims underwriting and rescission constituted a breach of the implied covenant of good faith and fair dealing.
Under California law, an insurer may rescind a policy for concealment or material misrepresentation of facts material to the risk. See, e.g., Cal. Ins. Code §§ 331, 332, 334, 359. Materiality is determined by the probable and reasonable effect of the facts on the insurer's decision to accept the risk or premium to be charged, and is generally a question of fact. Ambiguous application questions are construed against the insurer-drafter, and an insurer may not rely on the insured's technical noncompliance with vague inquiries to justify rescission. Knowledge and representations of the insurer's soliciting agent who fills out the application are imputed to the insurer. Separately, the implied covenant of good faith and fair dealing obligates an insurer to conduct a prompt, thorough, and fair investigation and to refrain from unfair claims practices; an insurer's unreasonable rescission or reliance on post-claims underwriting may constitute bad faith and support tort damages, including punitive damages upon clear and convincing proof of malice, oppression, or fraud. See, e.g., Egan v. Mutual of Omaha Ins. Co., 24 Cal. 3d 809 (1979); Civ. Code § 3294.
The Court of Appeal affirmed the judgment for Wilson. It held that substantial evidence supported the jury's findings that Blue Cross's rescission was unreasonable and in bad faith where the insurer performed only cursory pre-issuance underwriting, relied on ambiguous application questions and its agent's handling of the application, and then engaged in post-claims underwriting to deny a large claim. The court further held that materiality and intent to conceal were factual questions for the jury, that an insurer cannot rely on its own agent's omissions to justify rescission, and that the evidence supported tort liability for bad faith; punitive damages were supported by evidence of systemic practices amounting to oppressive or malicious conduct.
Wilson is an early and influential case condemning post-claims underwriting in the individual health insurance market. It clarifies that while rescission is a lawful contractual remedy for material misrepresentation, insurers must (1) ask clear questions, (2) reasonably underwrite before issuing the policy, and (3) conduct a fair investigation when handling claims. Agent knowledge is imputed to the insurer, ambiguities are construed against the drafter, and materiality/intent are generally jury issues. The decision is routinely cited alongside Egan and later authorities (e.g., Hailey v. California Physicians' Service) to demonstrate that rescission cannot be used as an ex post device to defeat claims, and that such practices can support tort and punitive liability. For law students, Wilson is a model of integrating statutory rescission doctrines with the tort of insurance bad faith.