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Can someone please help! We are trying to assign the correct ICD 9 code for a subtherapeutic anticoagulation level? We seem to be getting this dx frequently. Thanks in advance!!!
You should check with the MD if he/she meant an adverse effect of an anticoagulation therapy. If so, code first the symptoms and then code E934.2. If it was a poisoning, follow poisoning coding guidelines.
To use 964.2 and E934.2, you are essentially telling the insurance company that this patient received WAY TOO MUCH and sub-therapeutic means they received not enough...that the level is below therapeutic.