Question: Our new patient has a history of transient ischemic attacks (TIA) with confusion. She is getting Plavix for her history of TIA. How should I code for her? -- Arizona Subscriber Answer: The code for a patient who has had a TIA but suffers no residual deficits is V12.54 (Per-sonal history of transient ischemic attack [TIA], and cerebral infarction without residual deficits). If your patient has residual deficits, code for them with codes from the 438 (Late effects of cerebrovascular disease) category. Also list V58.63 (Long-term [current] use of antiplatelets/antithrombotics).