D.C. Mun. Regs. tit. 26-A, § 501
501.1 As soon as possible, after the effective date of the regulations, insurers shall mail to all policyholders who have policies bearing expiration dates on or after June 2, 1986, endorsements providing coverages required by the Act.
SOURCE: Final Rulemaking published at 35 DCR 7649 (October 21, 1988).