Several industry executives told The Washington Post the daily reports on new enrollments since the roll-out of the Affordable Care Act have often included duplicative information, such as people enrolling and canceling several times in a day.
"It is a glitch that ... needs to be fixed," a spokesman for a Blue Cross Blue Shield plan in the southern United States told the Post.
The Obama administration has portrayed the various bugs and glitches in the exchange program as a symptom of its popularity. Officials have said the system was not designed to accommodate such a large number of people logging on to look for a low-cost policy.
Some insurers are not confident the issues will be ironed out in the near future. The Post said Cigna instructed its brokers to wait until next month before trying to sign up applicants who might qualify for a premium subsidy, due to the reliability of the software that calculates that subsidy.