icd-9

A physician prescribes digoxin for treating a patient diagnosed with congestive heart failure. After six months, the physician performs a therapeutic drug test to monitor the level of the drug on the patient.
i need the code for this

re: icd-9

Hi
You would code V58.83 (Encounter for therapeutic drug monitoring) and V58.69 (long term current use of other (high risk) meds.