Section 1807. Effect of allowance of claim by fiduciary 1

Whenever a fiduciary shall allow a claim other than the fiduciary's
  own  the  validity  of the claim shall thereby be established, but if it
  shall appear that the claim was improperly allowed or  was  fraudulently
  or  negligently  paid,  any  party  adversely  affected thereby may file
  objections thereto in any proceeding for the judicial settlement of  the
  account  of the fiduciary. A copy of the objections shall be served upon
  all parties who have appeared and if the claimant  has  not  appeared  a
  copy  shall  be  served upon the claimant personally or by mail.  If the
  court sustains the objections the claim shall thereupon be dismissed  if
  it  has not been paid.  If it has been paid, in whole or in part, and an
  amended petition or objections request a  direction  that  the  claimant
  repay  to  the  fiduciary  of the estate any amount of the estate assets
  determined on the settlement of the account  to  have  been  paid  to  a
  claimant  as  a  result  of  fraud,  negligence  or  collusion  and if a
  supplemental citation to this effect was  issued  and  served  upon  the
  claimant,  then  the  court,  is  authorized in the accounting decree to
  direct repayment by the creditor of the excess to the fiduciary  of  the
  estate and may, in addition, impose a surcharge against the fiduciary or
  otherwise  as  justice shall require. If there is no amended petition or
  answer requesting a direction that the  claimant  repay  the  amount  of
  estate  assets  determined  to  have  been  paid  as  a result of fraud,
  negligence or collusion then a surcharge shall be  imposed  against  the
  fiduciary  in  the  amount  the  estate  has been damaged by such fraud,
  negligence or collusion.
    2.  In such accounting proceeding a party adversely affected may  show
  that  a  judgment  on a claim against a fiduciary was obtained by fraud,
  negligence or collusion.  If the court determines that the judgment  was
  so  obtained,  a surcharge shall be imposed against the fiduciary in the
  amount the  estate  has  been  damaged  by  such  fraud,  negligence  or
  collusion.