I do not know what this code is meant for (may be in 2010 CPT). But i feel that 79xxx series belong to the Radioactive isotopes category .
But I do know for sure that INR is a lab test done in patients on ANTICOAGULANTS,(atrial fibrillation, previous history of an "infarct" or DVT/pulmonary embolism), for detecting the extended Prothrombin Time in patients who are on Coumidin, Heparin derivative therapy- as an INDEX to decide about the therapeutic continuation/ or to reduce the dose/ or to temporarily discontinue the drug- meaning to know the adverse effect (not as a poison drug)- in otherwords, it is an AQUIRED COAGULATION DEFECT while on treatment with Anticoagulants.
So, "INR elevation" specifically states that extended coagulation time is the desired endpoint for coumadin.
It is a Lab test and the E/M code would suffice if it the only service provided.
For ICD 9 CM Code: Assign a code for abnormal blood lab value for those instances where the PT and INR are elevated and the patient is admitted for reversal of the extended PT and INR. A contributing factor to the patient's adverse reaction to coumadin is the extended half-life of the circulating coumadin in the blood stream due to decreased effectiveness of the liver to metabolize the drug.
Am I clear and make some sense or no?
Thank you, Alices
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