When coding the diagnosis "tachycardia, R/O angina pectoris," the medical assistant should look up the code in the index under "angina."

Name: When coding the diagnosis "tachycardia, R/O angina pectoris," the medical assistant should look up the code in the index under "angina."
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Quizplus · Accepted Answer

The correct coding process requires looking up the primary diagnosis, which in this case is "tachycardia," not "angina pectoris," especially since "R/O" (rule out) indicates a condition that is not confirmed.

When Coding the Diagnosis "Tachycardia, R/O Angina Pectoris," the Medical