Claims handling is a regulated activity, not just a commercial negotiation, and the source is worth naming. NAIC adopted the Unfair Claims Settlement Practices Act (Model 900) as a free-standing act in June 1990, separating unfair claims from general unfair trade practices so that claims could be supervised as a market conduct function in their own right. Its stated purpose is "to set forth standards for the investigation and disposition of claims arising under policies or certificates of insurance." Section 4 lists the conduct the act defines as an unfair claims practice, and the list reads like the complaints people actually have: knowingly misrepresenting relevant facts or policy provisions; failing to acknowledge pertinent communications with reasonable promptness; failing to adopt and implement reasonable standards for prompt investigation and settlement; "not attempting in good faith to effectuate prompt, fair and equitable settlement of claims submitted in which liability has become reasonably clear"; refusing to pay without conducting a reasonable investigation; failing to provide claim forms within fifteen calendar days of a request; and failing, on a denial or a compromise offer, "to promptly provide a reasonable and accurate explanation of the basis for such actions."
Two qualifications on that model matter, and both cut against the way it is usually described. First, section 3 provides that an act on the section 4 list is an improper claims practice only if it is "committed flagrantly and in conscious disregard" of the act, or "committed with such frequency to indicate a general business practice." One slow adjuster is not, by itself, a violation of the model. Second, the model's own section 1 states that "nothing herein shall be construed to create or imply a private cause of action for violation of this Act," and its purpose section also excludes workers' compensation, fidelity, suretyship and boiler and machinery insurance from its scope. Those are statements about the model. A model law is a template: what binds an insurer is the version the state actually enacted, and states vary in what they adopted and in what remedies their own law provides. The reliable route for a policyholder is a complaint to their state insurance department, which supervises this conduct directly.
Employer health and disability plans run on a federal clock instead, set by the Department of Labor's ERISA claims procedure regulation at 29 CFR 2560.503-1(f). The deadlines are specific. For a group health plan: a claim involving urgent care must be decided as soon as possible and "not later than 72 hours after receipt of the claim," with 24 hours to tell the claimant what information is missing and at least 48 hours for them to supply it. A pre-service claim must be decided within 15 days, extendable once by up to 15 days. A post-service claim must be decided within 30 days, extendable once by up to 15 days. A disability claim sits under its own paragraph rather than under the group health rules, and must be decided within 45 days, extendable by up to 30 days and, if necessary, by a further 30. Where an extension is needed because the claimant has not supplied information, the claimant must be given at least 45 days to provide it, and the plan's own clock is paused while they do. Plans that are neither health nor disability run on the general rule: 90 days, extendable once by up to 90 days. Whenever a claim is denied in whole or in part, the plan must give the claimant "the specific reason or reasons for the adverse determination" in writing.
NAIC's structure itself signals that a life claim and a car claim are not the same process. Under the authority of Model 900 the association promulgated two separate regulations, the Unfair Property/Casualty Claims Settlement Practices Model Regulation and the Unfair Life, Accident and Health Claims Settlement Practices Model Regulation. A property claim turns on inspecting damage and valuing repairs; a life claim turns on proving a death and confirming who is entitled; a health claim turns on medical necessity, network status and benefit design. Expecting one timetable or one vocabulary across all of them is the main reason people find the process confusing.