How Should CAD be Coded?

Coding Clinic (1997, Q2)

Question:  A patient has coronary artery disease.  There is no mention of a past history of CABG.  Should this be coded 414.00 Coronary atherosclerosis of unspecified type of vessel, native or graft, or 414.01 Coronary atherosclerosis of native coronary artery?

Answer:  Assign code 414.01, coronary atherosclerosis of native coronary artery.  Since there is no history of CABG, this is a native coronary vessel.  However, if the documentation is unclear concerning prior bypass surgery, query the physician.

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