Which term describes making false statements about an insurer or any person engaged in the insurance business?

The term that accurately describes making false statements about an insurer or any person engaged in the insurance business is defamation. Defamation specifically involves the communication of false information that harms the reputation of an individual or entity. In the context of insurance, it refers to statements that could damage the good name or business operations of an insurer or its employees.

Misrepresentation, while related, generally refers to inaccurately representing information or facts rather than making false statements aimed at harming another's reputation. Deception usually pertains to misleading someone in general, rather than specifically damaging someone's reputation. Disparagement, although similar, often concerns false statements about a person's goods or services rather than the person or entity directly.

Thus, defamation is the correct term as it explicitly involves the act of damaging someone's reputation through false statements, particularly within the insurance industry context.