During a March 20 media conference call, CNBC asked federal officials if they would provide weekly updates on special enrollment sign-ups on HealthCare.gov, the federally run insurance exchange that serves 37 states.
"We are planning on having some release on what the numbers look like sometime next week," said Andy Slavitt, acting administrator for the Centers for Medicare and Medicaid Services, in response to that question.
But when asked Thursday about whether such information would be disclosed, and when, a Health and Human Services Department spokesman said he did not have an "update" on the special enrollment period data.
The spokesman did not respond to a follow-up request for comment on why there was no update this week as Slavitt had promised.
Late Friday afternoon, after this story was first published, a federal official who spoke on the condition of anonymity said that HHS plans to release information about the number of special enrollment sign-ups next week.
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The lack of disclosure so far contrasts with HHS' practice during the three-month open enrollment season in Obamacare plans for 2015, which ended Feb. 15. During that period, HHS released sign-up tallies on a weekly basis for HealthCare.gov.
HHS' lack of response also contrasts with the practice of at least one state-run Obamacare exchange.
On Friday morning, CNBC asked Washington state's Obamacare marketplace if it was issuing updates on special enrollment numbers.
Within hours, the spokeswoman for the Washington Health Benefit Exchange responded via email, saying that "to date, we've had about 4,000 residents enroll through the special enrollment period."