The Centers for Medicare & Medicaid Services (CMS) says an update of a major exchange agent and broker registration program may affect 172,525 people.

CMS, an arm of the U.S. Department of Health and Human Services (HHS), gave that exchange producer count in a routine information collection review filing.

CMS runs the Patient Protection and Affordable Care Act (PPACA) exchanges that use the HHS HealthCare.gov exchange enrollment system. The information collection review producer count includes only the producers who work with HealthCare.gov, not producers who work only with state-based exchanges.

The National Association of Health Underwriters (NAHU) has estimated that the HealthCare.gov exchanges were working with about 70,000 during the 2014 open enrollment period.

In February 2013, when CMS first put the HHS exchange producer registration program through an earlier review process, the agency estimated that its exchanges could register as many as 254,095 producers.