Directed CRNA with Retrobulbar Blocks

I'm not sure if I'm billing these right. So when our patients have these cataract procedures the anesthesiologist does the eyeblock and the CRNA does the MAC. I've been billing the time for the eyeblocks and not the 67500 code separately since it is inclusive to the MAC. I've been billing the MAC for these procedures using the Q modifiers and for the eyeblock since it is done by the anesthesiologist only with AA:

00142,QX,23,QS (for MAC)
00142,QY,23,QS (for MAC)
00142,AA,23,QS (for the eyeblock time)

I'm not sure if this is correct. Should the time for the eyeblock be included with the 00142,QY,23,QS even though the CRNA is not doing the eyeblock or should it be separate using the 00142,AA,23,QS?
:confused:

Directed CRNA with Retrobulbar Blocks