guidelines (1) In general In the case of items and services for which the Department of Health and Human Services has recognized a national practice guideline, such items and services shall be deemed to meet the standards specified in section 201(a) if they have been provided in accordance with such guideline. For purposes of this subsection, an item or service not provided in accordance with a practice guideline shall be deemed to have been provided in accordance with the guideline if the health care provider providing the item or service— (A) exercised appropriate professional judgment in accordance with the laws and requirements of the State in which such item or service is furnished in deviating from the guideline