2010 New York Code
PBH - Public Health
Article 29-CC - (2994-A - 2994-U) FAMILY HEALTH CARE DECISIONS ACT
2994-J - Revocation of consent.

§ 2994-j. Revocation of consent. 1. A patient, surrogate, or parent or
  guardian of a minor patient may at any time revoke his or her consent to
  withhold or withdraw life-sustaining treatment by informing an attending
  physician or a member of the medical or nursing staff of the revocation.
    2.  An  attending  physician  informed of a revocation of consent made
  pursuant to this section shall immediately:
    (a) record the revocation in the patient's medical record;
    (b) cancel  any  orders  implementing  the  decision  to  withhold  or
  withdraw treatment; and
    (c)  notify  the hospital staff directly responsible for the patient's
  care of the revocation and any cancellations.
    3. Any member of the medical or nursing staff informed of a revocation
  made pursuant to this section  shall  immediately  notify  an  attending
  physician of the revocation.