45 CFR § 170.401
Information blocking
April 14, 2021
(a) Condition of Certification requirement. A health IT developer must not take any action that constitutes information blocking as defined in 42 U.S.C. 300jj-52 and §171.103 on or after April 5, 2021.
(b) [Reserved]
[85 FR 25945, May 1, 2020, as amended at 85 FR 70084, Nov. 4, 2020]