Missouri Revised Statutes Title XII. Public Health and Welfare § 190.613. Out-of-state order, physician may execute order, when

1. A patient or patient's representative and the patient's attending physician may execute an outside the hospital do-not-resuscitate order through the presentation of a properly executed outside the hospital do-not-resuscitate order from another state, the District of Columbia, or a territory of the United States, or a Transportable Physician Orders for Patient Preferences (TPOPP)/Physician Orders for Life-Sustaining Treatment (POLST) form containing a specific do-not-resuscitate section.

2. Any outside the hospital do-not-resuscitate form identified from another state, the District of Columbia, or a territory of the United States, or a TPOPP/POLST form, shall:

A patient or patient's representative may express to emergency medical services personnel, at any time and by any means, the intent to revoke the outside the hospital do-not-resuscitate order.

3. The provisions of section 190.606 shall apply to the good faith acts or omissions of emergency medical services personnel under this section.