Pompey have been in administration since February and are £61m in debt.
The Pompey Supporters Trust are in the process of a takeover bid but that is conditional on administrators forcing the sale of Fratton Park.
"The Football League re-affirm its earlier decision that these conditions would include a deduction of 10 points," said the statement.
"The 10-point deduction was anticipated," spokesman Colin Farmery told BBC Radio Solent.
"I don't think that is a great, significant blow to fans. I think most of us expected that was a likely outcome.
"The key thing is we are taking a long-term view of this decision and in the long term we think this is great news for Portsmouth Football Club."