Two reimbursable CPT codes allow physicians to be paid for autonomic nervous system monitoring.

These two reimburseable CPT codes for autonomic nervous system monitoring (95921 and 95922) were established in 1999. These CPT codes enable health care providers to be reimbursed for monitoring the autonomic nervous systems of patients where such monitoring is indicated.

The reason for two CPT codes is simple. In order for physicians to get a complete look at autonomic nervous system functioning they must read both of it's branches (Sympathetic and Parasympathetic) independently.

CPT code 95921 is coded for parasympathetic nervous system monitoring and 95922 is coded for sympathetic nervous system monitoring.