As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THE CAPTAIN AND F/O'S ALTIMETER DIFFER BY 50 FEET AND THE CAPTAIN AND STANDBY ALTIMETERS DIFFER BY 100 FEET, BOTH AT CRUISE. MAINTENANCE PERFORMED A PITOT STATIC AND OPERATION CHECK OF THE ALTIMETER SYSTEM. OPS CHECKS GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.