District of Columbia Code Division I. Government of District. § 7-624. Declaration--Revocation.

(1) By being obliterated, burnt, torn, or otherwise destroyed or defaced by the declarant or by some person in the declarant's presence and at his or her direction;

(2) By a written revocation of the declaration signed and dated by the declarant or person acting at the direction of the declarant. Such revocation shall become effective only upon communication of the revocation to the attending physician by the declarant or by a person acting on behalf of the declarant. The attending physician shall record in the patient's medical record the time and date when he or she receives notification of the written revocation; or

(3) By a verbal expression of the intent to revoke the declaration, in the presence of a witness 18 years or older who signs and dates a writing confirming that such expression of intent was made. Any verbal revocation shall become effective only upon communication of the revocation to the attending physician by the declarant or by a person acting on behalf of the declarant. The attending physician shall record, in the patient's medical record, the time, date, and place of when he or she receives notification of the revocation.