What is the cpt code for establishment and subsequent insertion of voice button following construction of transesophageal fistula?

The CPT code for the establishment and subsequent insertion of a voice button following the construction of a transesophageal fistula is typically 43101 for the fistula construction, but there is no specific code for the voice button insertion itself. You may use an unlisted procedure code, such as 42999, for the voice button insertion if no specific code exists. Always consult the latest CPT coding guidelines or a coding specialist for precise coding.