1        Proof of Eligibility Unknown or Unavailable
2        Litigation
3        Authorization Delays
4        Delay in Certifying Provider
5        Delay in Supplying Billing Forms
6        Delay in Delivery of Custom-made Appliances
7        Third Party Processing Delay
8        Delay in Eligibility Determination
9        Original Claim Rejected or Denied Due to a Reason Unrelated to the Billing 
         Limitation Rules
10       Administration Delay in the Prior Approval Process
11       Other
15       Natural Disaster
16       Lack of Information
17       No response to initial request