Wiki 64455 vs. 20600

ms.bones206

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The pt had an inj into the 3rd webspace, but I could only code pain in left foot. If the dx would have been confirmed neuroma in 3rd webspace I would have coded 64455 (Injection, plantar common digital nerve), but the dx included likely and I coded the pain code...so do I have to use the 20600 for the inj code?

Dx: Likely stump neuroma third webspace, left foot.
Procedure: Will proceed with diagnostic and therapeutic cortisone injection. Following sterile prep, i injected the third webspace, left foot utilizing 2 cc mix: 1 cc 1% Xylocaine plain, cc dexamethasone. Follow up in one month.

This is what I have always thought; but I can't find any documentation:
Since there is no definite diagnosis of neuroma, and the injection has been given in webspace, so the appropriate code to bill for above diagnosis M79.671, (Pain in right foot), will be 20600 (Arthrocentesis, aspiration and/or injection, small joint or bursa (eg, fingers, toes); without ultrasound guidance).

 
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