NIST SP 800-66 Rev. 2 Copilot
Navigate the HIPAA Security Rule with NIST implementation guidance at your side
What the NIST SP 800-66 Rev. 2 Copilot Can Do
Understand required vs. addressable implementation specifications under §164.308–§164.316
Identify ePHI systems, threats, and vulnerabilities for your §164.308(a)(1) risk analysis
Map Security Rule standards to NIST CSF subcategories and SP 800-53 Rev. 5 controls
Navigate key activity tables and sample questions for each Security Rule standard in §5
Track documented rationale for addressable specifications to support OCR defensibility
Draft business associate contract content aligned with §164.308(b)(3) and §164.314(a)(2)
About NIST SP 800-66 Rev. 2 Copilot
NIST SP 800-66 Rev. 2 is a cybersecurity resource guide published by NIST in collaboration with HHS OCR to help covered entities and business associates implement the HIPAA Security Rule (45 CFR Part 164, Subpart C). The Copilot helps you work through its risk assessment guidance, per-standard key activities, and NIST CSF and SP 800-53 Rev. 5 mappings.
Who it's for
HIPAA
The statute 800-66 R2 implements — the publication is NIST's official guide for the HIPAA Security Rule.
NIST CSF
800-66 R2 explicitly cross-walks each Security Rule standard to NIST CSF subcategories for integrated programs.
NIST 800-53
The fuller control catalogue 800-66 maps healthcare-specific implementations against.
Frequently Asked Questions
What is NIST SP 800-66 Rev. 2?
NIST SP 800-66 Rev. 2 is a non-binding cybersecurity resource guide, published by NIST in collaboration with HHS OCR, that explains how regulated entities can implement the HIPAA Security Rule found at 45 CFR Part 164, Subpart C (§§164.302–164.318). It provides risk assessment guidance, per-standard key activities, and cross-references to NIST CSF and SP 800-53 Rev. 5 controls.
How does the NIST SP 800-66 Rev. 2 Copilot help?
The Copilot helps you interpret the guide's risk assessment steps (§3), risk management activities (§4), and the key activity tables for every administrative, physical, technical, and organizational safeguard standard (§5). It also helps you map Security Rule requirements to NIST CSF subcategories and SP 800-53 Rev. 5 controls using the Appendix D crosswalk.
Does SP 800-66 Rev. 2 cover the HIPAA Privacy Rule or Breach Notification Rule?
No. SP 800-66 Rev. 2 covers the Security Rule only, which governs electronic protected health information (ePHI). The Privacy Rule (45 CFR Part 164, Subpart E) and the Breach Notification Rule (45 CFR Part 164, Subpart D) are separate requirements and are not addressed in this guide.
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