What kind of failure would cause an indicated airspeed of say 200 knots on the ground (stationary)?
A mechanical blockage inside the airspeed gauge could prevent the needle from dropping all the way back to zero -- assuming the aircraft had exceeded 200 KIAS in the first place.
Whether this or the pitot-related failures in the @CamilleGoudeseune answer, the pitot-static unit, airspeed indicator, and altimeter (also connected to the static port) should be checked and repaired as needed by a qualified person.
This would happen if you were flying at 200 knots, encountered enough freezing moisture to completely ice over the pitot tube and the static ports, didn't have pitot heat for some reason, and then (somehow safely) landed and parked, while still iced over.
Once iced over, IAS won't change.