It is the same.
"Report the following eRx numerator G-code, when applicable:
G8553 - At least one prescription created during the encounter was generated and transmitted electronically using a qualified eRx system."
from
2011 eRx Measure Specifications, Release Notes and Claims-Based Reporting Principles
By the way, that document (through a download link near the bottom of this page:
http://www.cms.gov/ERxIncentive/06_E-Prescribing_Measure.asp#TopOfPage) is a good summary of what we need to know about the program.