The HIPAA Privacy Rule (45 CFR Part 164, Subpart E) governs when Protected Health Information (PHI) may be used and disclosed and by whom. Its core logic is simple to state: PHI may be used relatively freely for treatment, payment, and healthcare operations (the "TPO" purposes); most other uses require the patient's written authorization; and across the board, disclosures are constrained by the minimum-necessary principle — share only what the task actually requires.
The Privacy Rule also grants patients a set of affirmative rights that your product has to be able to honor, not just acknowledge in a policy. These include the right to access and obtain a copy of their records, to request amendments, and to receive an accounting of certain disclosures. If your system stores clinical records, those rights translate directly into features: export, correction workflows, and disclosure logging.
For a telemedicine product team, the Privacy Rule is the rule that quietly governs all the "growth" surfaces — record sharing, referrals, analytics, and especially marketing communications. Sending a promotional email that uses PHI, or feeding identifiable clinical data into a product-analytics pipeline, can require authorization that you did not collect. The common pitfall is treating data the team already holds as freely reusable for new purposes; under the Privacy Rule, having PHI for treatment does not entitle you to use it for marketing or to share it with a partner without the right legal basis. Run features that touch PHI through a use-and-disclosure analysis before they ship.
