We have a patient that had a fetal demise at 21 wks. Patient wants an autopsy done on fetus to determine cause. Insurance says we need to pre-authorize the autopsy. Our physician ordered autopsy for any chromosonal defects. Fetal Demise Dx 656.41 "after completion of 22 wks gestation." Would there me a more appropriate code, since the fetus was only 21 wks. Thanks! Becky