CMC Joint Injections

Question:

My hospital coder recently told me that I should not bill CMC injections as 20605 but rather 20600. I remember during the conference that 20605 is a justifiable code for thumb CMC joint injections. Can you verify that this is correct and offer me some guidance on what to present to the hospital coder?  

Answer:

Thank you for your question. The current guidance, based on an AMA CPT Assistant from August of 2017, is an injection into the CMC joint is 20600.  

*This response is based on the best information available as of 02/05/26.