Clarification- while you drop from DEERS and your pay stops at 36 months, the service can adjudicate your case beyond that time and this has happened quite frequently over the past 3 years- primarily in Navy cases. Should that occur, you have the same appeal rights as in any other TDRL review case. However, you can then be retroactively reinstated provided that you are rated at 30% or higher on your final adjudication. While it is possible to recover medical expenses retroactively via Tricare, it takes forever and they contest virtually every claim. Important note- the 3-year clock starts from your end service date on your DD-214, not the DA-199.