What Does The T Mean On A Medicare Number? 
Your medicare number followed by a letter code is referred to as a claim number . It tells the type of Medicare benefits for which one qualifies . The letter T stands for `` Uninsured - Entitled to HIB -LRB- Part A -RRB- under deemed or renal provisions ; or Fully insured who have elected entitlement only to HIB -LRB- Part A -RRB- '' . The acronym HIB stands for Health Insurance Benefits and Part A is the hospitalization and skilled care part of Medicare . 