Are you able appeal a denied claim to kaiser member services? Maybe you can trigger broader policy change / system update by getting them to look a single case

Are you able appeal a denied claim to kaiser member services? Maybe you can trigger broader policy change / system update by getting them to look a single case (and having a doctor advocate strongly on your behalf) Even if it doesn't trigger broader policy change, you could get a playbook in place to help others get their review processed faster, e.g. send this form letter, linking to document x and y.