The following works fine for me for reformatting all of your number forms in one go:
Code:
Sub Demo()
Application.ScreenUpdating = False
With ActiveDocument.Range
With .Find
.ClearFormatting
.Replacement.ClearFormatting
.Replacement.Font.Bold = True
.Replacement.Highlight = True
.Text = "^13[0-9]{1,}-[0-9]{1,}-[0-9]{1,}"
.Replacement.Text = ""
.Forward = True
.Wrap = wdFindContinue
.Format = True
.MatchWildcards = True
.Execute Replace:=wdReplaceAll
End With
End With
Application.ScreenUpdating = True
End Sub