This tutorial about requests for restriction is the fifteenth of 24 lessons. The HIPAA rule for amending protected health information (PHI) is contained in section 164.526. California's Health & Safety Code gives patients an unrestricted right to have an addendum (up to 250 words) entered into their record. This website is specifically designed for small entities in California. Each tutorial is narrated by Carol Mack, RN, attorney at law.