CFR›Title 42›Chapter I›Part 81›Subpart C ContainsSections 81.5–81.6CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart C—Data Required To Estimate Probability of Causation Sections 81.5 § 81.5 Use of personal and medical information. 81.6 § 81.6 Use of radiation dose information. Previous B Subpart B—Definitions Next D Subpart D—Requirements for Risk Models Used To Estimate Probability of Causation