Final answer:
The correct diagnosis code for a patient with coronary artery disease and ischemic chest pain is I25.10, R07.9.
Step-by-step explanation:
The correct answer is a) I25.10, R07.9.
The diagnosis of coronary artery disease with ischemic chest pain is coded as I25.10. I25.10 is a specific code for atherosclerotic heart disease of native coronary artery without angina pectoris. It is important to note that this code does not include coronary spasm (angina) (I20.9).
The chest pain associated with coronary artery disease can be coded as R07.9, which is the ICD-10 code for chest pain, unspecified. This code is used when the recording physician does not provide any more specific details about the chest pain.