Yes,that is one of the reasons we will never get a true count of deaths from the virus in any country. EMS here when someone dies in their home are putting down cardiac arrest. They don't have time to test them for obvious reasons.
But the lung damage for people who survive seems to be also something that may linger with them for life,including in the young who have to be incubated . Preliminary studies show that they may have greater risks from even the normal flu in the future.