C.R.S. § 15-18-110

(1) With respect to any declaration that appears on its face to have been executed in accordance with the requirements of this article: (a) Any physician or advanced practice registered nurse may act in compliance with such declaration in the absence of actual notice of revocation, fraud, misrepresentation, or improper execution; (b) A physician who signs a certificate withholding or withdrawing life-sustaining procedures in compliance with a declaration shall not be subject to civil liability, criminal penalty, or licensing sanctions therefor; (c) A hospital or person acting under the direction of a physician and participating in the withholding or withdrawal of life-sustaining procedures in compliance with a declaration shall not be subject to civil liability, criminal penalty, or licensing sanctions therefor; and (d) An advanced practice registered nurse who withholds or withdraws life-sustaining procedures in compliance with a declaration shall not be subject to civil liability, criminal penalty, or licensing sanctions therefor.