The group being targeted by the administration probably isn’t that large, the Centers for Medicare and Medicaid Services told The Hill, likely not exceeding several tens of thousands of people.

Still, the fact that the administration is granting a special enrollment period to consumers who made a mistake contrasts with CMS’ previous pledge to only allow enrollment past the deadline for a narrow set of qualifying life events, such as a job loss or a move.

“While there will continue to be special enrollment periods for people who lose coverage mid-year or experience other life changes, this channel for enrollment will not be available for the vast majority of consumers,” said CMS in a blog post last month explaining its tougher policy on enrollment.

In addition to pressuring the administration to allow fewer post-deadline enrollees, some insurers participating in the marketplace have told brokers that they won’t be paying commissions for plan purchases during special enrollment periods.

Insurers have said that those who sign up during such periods are significantly more costly, on average.