Insurance policies are contracts. A violation of an insurance policy is a usually going to be a breach of the contract. A lot of insurance law, simply put, is contract law.
So what about the relationship of breach of contract to other theories of liability?
The 1996, Texas Supreme Court opinion, Liberty National Fire Insurance Co. v. Akin, says that “Insurance coverage claims and bad faith claims are by their nature independent. But, in most circumstances, an insured may not prevail on a bad faith claim without first showing that the insurer breached the contract.”