Home › CFR › Title 45 › Part 164345 CFR Part 1643 — Restriction on Assisted Suicide, Euthanasia, and Mercy Killing§ 1643.1— Purpose.§ 1643.2— Definitions.§ 1643.3— Prohibition.§ 1643.4— Applicability.§ 1643.5— Recipient policies and recordkeeping.