B767-400 and 400 ER
Air Traffic Control Developmental
Communication Breakdown; Distraction
ATC Issue All Types; Airspace Violation All Types; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Procedure
Aircraft X entered the sector; the R Controller solicited the estimate; requested altitude; and requested mach speed for our sectors exit fix.  I took the information and coordinated it; JOBOC XA55 FL330 mach 0.80.  After coordination was complete the aircraft encountered moderate turbulence at FL330.  Then the pilot requested FL350; during the time I was offline passing the turbulence information to the next sector; and asking if they have any adverse ride reports.  During this time the R Controller climbed the aircraft to FL350.  I did not catch this; and did not re-coordinate the revised altitude to the next sector.  When the aircraft was terminated I failed to check the altitude of the data block.  The aircraft then checked in with the next sector (non-radar) at FL350 not at the coordinated altitude of FL330.  No loss of separation occurred.
ZNY Controller reports of not catching an altitude change because they were off line coordinating.  Aircraft climbed to higher altitude then what was coordinated.