People have been urged to be patient with GP practices at the start of the week as they deal with the repercussions of the IT outage on Friday.
Monday is expected to be a particularly busy day for surgeries.
An estimated two thirds of practices in Northern Ireland were impacted by the global IT problems and were forced to revert to paper-based processes in some instances.
Industries across the world were hit by the outage, leading to cancelled flights and problems in some healthcare, retail and banking settings.
Dr Frances O’Hagan, chairwoman of BMA’s Northern Ireland general practitioners committee, said Monday will see practices have to deal with the aftermath of the outage.
“A key online system we rely upon to access and update patients’ clinical records went down, causing a considerable backlog of work that will now have to dealt with in this coming week,” she said.
“This will of course put considerable strain on general practice, however, staff will continue to provide care to the best of their ability.
“Whilst these systems return online, I would appeal to anyone accessing their GP to be patient while staff do their utmost to address this backlog of work.
“To ensure such an outage does not have a similar impact in the future, one that forced many surgeries to return to pen and paper to be able to serve their patients, we would call for more investment from the Department of Health in contingency planning and recovery plans.”