Coding carpal tunnel syndrome without EMG

Sarahmk

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East Aurora, NY
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I need help....I'm a relatively new coder. Been working for an Internal Medicine office for over a year now. When I had first started, the office manager told me never to code carpal tunnel syndrome unless there was a positive EMG in the patient's chart. This was never an issue until now - I have a patient who the Dr. believes has CTS based on his exam findings (positive Phalen's, positive Tinel's). He is insisting on using the CTS code. Can I use the CTS dx without an EMG or must there be a positive nerve conduction study in order to effectively prove the diagnosis? PLEASE HELP.
 
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