The carrier shall file current medical reports with the board under the following conditions:     
       (1) after the expiration of four weeks of disability;       
         (2) when filing a notice of controversion based on medical grounds;         
           (3) upon receipt of narrative reports submitted by the treating doctor pursuant to §42.40 of this subchapter (relating to Required Reports: Subsequent Reports);           
             (4) when filing an A-2 giving return to work date or release to  return to work date;             
               (5) when filing an A-4 showing additional lost time;               
                 (6) when requesting a prehearing conference;                 
                   (7) when filing a CSA;                   
                     (8) when filing an A-2 lump sum showing payment for permanent partial disability resulting from a specific injury; and                     
                       (9) when requested by the board.                      
     Source Note:        The provisions of this §42.78 adopted to be effective December 6, 1988, 13 TexReg 5826.