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MT
HB 590 (2025)
Codified At
Effective Date
Description
Requires health carriers to establish and maintain a patient access application programming interface (API), provider directory API, provider access API, payer-to-payer API, and prior authorization API in accordance with CMS interoperability standards for these APIs by the compliance date(s) set by CMS for these APIs. Certain exceptions and extensions may apply.
Prohibits a health care provider requesting medical laboratory tests for a patient from engaging in information blocking (as defined by federal law), including a requirement that the following reports or test results in the patient’s electronic health record must be disclosed within 72 hours or when the provider directs the release (whichever occurs first): reports or test results that may show a finding of malignancy, could reveal genetic markers, a positive HIV test, or hepatitis infection
KY
HB 529 (2022)
Codified At
Effective Date
Description
Prohibits a health care provider requesting a medical laboratory test from engage in information blocking (as defined by federal law)
Notwithstanding this prohibition, the law expressly prohibits a provider from disclosing to a patient as part of the electronic health record or pathology report the following types of reports and tests until 72 hours after the results are finalized, unless the provider directs the release of the results before the end of that time: reports that have a reasonable likelihood of showing a finding of malignancy, or could reveal genetic markers
CA
AB 352 (2023)
Codified At
Effective Date
Description
Requiring that the California Health and Human Services Data Exchange Framework (Cal DxF) align with the federal information blocking provisions of the 21st Century Cures Act (Public Law 114-25)
TN
SB 0890 (2025) and SB 2012 (2024)
Codified At
Effective Date
Description
With respect to the amendments to Title 63
With respect to the amendments to Title 68
With respect to the amendments to Title 47
With respect to the amendments to Title 56
Codified At
Effective Date
Description
Prohibits a person who administers or control the electronic health record of a patient from disclosing sensitive test results to a patient or patient representative by electronic means before the third day after the sensitive test results are finalized
CT
SB 811 (2015)
Codified At
Effective Date
Description
Defines “health information blocking” as: “(A) knowingly interfering with or knowingly engaging in business practices or other conduct that is reasonably likely to interfere with the ability of patients, health care providers or other authorized persons to access, exchange or use electronic health records, or (B) knowingly using an electronic health record system to both (i) steer patient referrals to affiliated providers, and (ii) prevent or unreasonably interfere with patient referrals to health care providers who are not affiliated providers but shall not include legitimate referrals between providers participating in an accountable care organizations or similar value-based collaborative care models.”
Makes a hospital’s failure to comply with all requirements of Section 19a-904c evidence of information blocking
Establishes that information blocking is an unfair trade practice subject to penalties set forth in Section 42-100o(b)
Provides that health information blocking by a hospital, health system or seller will be subject to such penalties
OR
N/A
Codified At
Effective Date
Description
Requires Oregon Managed Care Entities (MCE) to comply with all federal regulations set forth in the CMS Interoperability and Patient Access Final Rule. It also requires MCEs to review the federal Information Blocking Rule to determine whether the MCE qualifies as an “actor” subject to the no information blocking requirements.
WA
SB 5380 (2019)
Codified At
Effective Date
Description
It provides that an electronic health record system vendor that is fully integrated with the state’s prescription monitoring program must make information available in a way that is unlikely to interfere with, prevent, or materially discourage access, exchange, or use of electronic health information, in accordance with the information blocking provisions of the federal twenty-first century cures act, P.L. 114-255.
United States Court of Appeals for the Fourth Circuit
United States District Court for the District of Maryland
Real Time Med. Sys., Inc. v. PointClickCare Techs., Inc., 8:24-CV-00313-PX, 2024 WL 3569493 (D. Md. July 29, 2024), aff’d, 131 F.4th 205 (4th Cir. 2025)
Description
Real Time Medical Systems, LLC, Plaintiff, a health analytics company brought a lawsuit against PointClickCare Technologies, Inc., Defendant, an electronic health records provider, alleging unfair competition and tortious interference with contracts under Maryland law after Defendant restricted Plaintiff’s automated (“bot”) access to its system, which Plaintiff needed to serve mutual skilled-nursing facility customers. Plaintiff argued that the restrictions violated the information blocking provision of the federal 21st Century Cures Act. The Fourth Circuit affirmed the district court’s granting of a preliminary injunction in favor of the Plaintiff, finding that Plaintiff was likely to succeed on its unfair competition claim, and that Defendant’s actions were not justified by regulatory exceptions.
United States District Court for the Northern District of California
Intus Care, Inc. v. RTZ Assocs., Inc., No. 24-01132-JST, 2024 WL 2868519 (N.D. Cal. June 5, 2024) (denying motion to dismiss)
Intus Care, Inc. v. RTZ Assocs., Inc., No. 24-01132-JST, (N.D. Cal. Sept. 11, 2025) (denying motion to for partial summary judgment)
Description
Intus Care alleged that RTZ refused to provide Intus Care access to these records in an effort to force these providers to RTZ’s competing analytics product. Intus Care brought California state law claims including intentional interference with prospective economic advantage. RTZ’s motion to dismiss the intentional interference of prospective economic advantage claim was denied as was RTZ’s motion for partial summary judgment on unfair competition claim.
United State District Court for the Central District of California
Palo Verde Healthcare District v. Altera Digital Health Inc. et al, No. 5:2024cv00666 (C.D. Cal. Apr. 29, 2024) (granting motion for preliminary injunction)
Description
In Palo Verde Healthcare District v. Altera, the hospital claimed Altera engaged in information blocking by threatening to cut off access to their medical records system unless payment was made. The court granted the hospital’s motion for preliminary injunction.
United States District Court for the Northern District of California
CureIS Healthcare, Inc. vs. Epic Systems Corporation, No. 3:25-cv-04108-SK (C.D. Cal)
Description
CureIS Healthcare, a health care technology company specializing in managed-care middleware software, is suing Epic for allegedly using its market dominance in electronic health record (EHR) and payer-administration systems to block competition, restrict data access, and interfere with CureIS’s customer relationships. CureIS claims that Epic engaged in anticompetitive conduct, including data access restrictions to eliminate CureIS as a competitor in the managed-care middleware market, in violation of federal antitrust laws, California unfair-competition statutes, and common-law torts.
Southern District of New York
Particle Health Inc. v. Epic Systems Corporation, No. 1:24-cv-07174-NRB (S.D.N.Y.)
Description
Particle Health, a data platform that provides API-based access to electronic health records, is suing Epic for monopolizing and unlawfully maintaining dominance in the market for electronic health records and payer platforms. The complaint alleges that Epic used its control over hospital EHR systems to block Particle’s access to patient data, coerce customers to abandon Particle, spread false security claims, and manipulate the Carequality data-exchange process.
United States District Court of Maryland
National Electronic Attachment, Inc. v. Henry Schein One, LLC, No. 1:25-cv-03246-MJM (D. Md.)
Description
Vyne Dental, a health care technology company providing revenue cycle management and clearinghouse services for dental practices, is suing Henry Schein One, LLC for engaging in anticompetitive and unlawful conduct to block Vyne’s access to dental practice data and destroy its business relationships. Vyne alleges that Henry Schein pushed software updates to disable Vyne’s integration tools, spread false security claims, and interfered with shared customers’ ability to transmit their own patient data in violation of the Cures Act’s information blocking rules, the Computer Fraud and Abuse Act, and other state and federal laws