BigCXJet,
I think you will find the answear to your question in the ATC chapter of the Jeppessen.
Look up "Flight Procedures"
Part VI Altimeter setting procedures.
Page 244
" Add 30 feet (10 m) to every hPa below STD. to obtain MEA"
When using QNH/QFE however the correction is not required.
Good luck,
TC