Insurance companies deny personal injury claims for numerous reasons, some legitimate and many questionable. Understanding the most common denial reasons helps you identify weaknesses in your case and prepare a stronger appeal. In California, insurers must provide specific written reasons for any claim denial, giving you valuable insight into their decision-making process.
The most frequent denial reasons include disputed liability (claiming you were at fault or partially at fault), policy exclusions (arguing the incident isn't covered), insufficient medical evidence (questioning the severity or causation of your injuries), missed deadlines (claiming you filed too late), and pre-existing conditions (arguing your injuries existed before the accident). Insurance adjusters also commonly deny claims by alleging lack of medical treatment, gaps in treatment, or failure to follow doctor's orders.
Many denials are made in bad faith—meaning the insurance company violated its duty to fairly investigate and evaluate your claim. California law requires insurers to conduct thorough, objective investigations and to interpret policy language in favor of coverage when ambiguous. If your claim was denied without proper investigation, based on irrelevant factors, or contrary to clear policy language, you may have grounds for a bad faith insurance lawsuit in addition to your injury claim appeal.