| | Public Health & Safety | CPR What is the name of 2-digit number that located after CPT code and provides more detail about code? The 2-digit number that located after CPT code and provides more detail about code is called modifier. CPR - Related Articles Basic CPR Instructions Types of CPR Training What does DTC mean? How to Perform Infant CPR Can the court order a pap smear? Adult CPR Instructions What is ndc number for cpt code 90714?