Limited Study EMG: 95870

Parenthetical directions below code 95870 refer users to 95860-95864 when reporting a complete study of an extremity(s). It's not always clear what this means. I have heard from some members who want more information regarding what constitutes a complete study versus a limited study, and when to use the limited code in general.

First, the language of the code 95870 is helpful. "Needle electromyography; limited study of muscles in 1 extremity or non-limb (axial) muscles (unilateral or bilateral), other than thoracic paraspinal, cranial nerve supplied muscles, or sphincters." Study of thoracic paraspinal muscles T2-T11 is reported using 95869. Study of cranial nerve supplied muscle(s) is reported with 95867 (unilateral) or 95868 (bilateral). Study of sphincters is reported with 51785-51792. Additiaonlly, oculoelectromyography is reported with 92262. Finally, laryngeal and diaphragm muscles are also not reported using the limited code becasue they have separate codes, 95865 and 95866 respectively.

Second, five muscles have to be examined to report needle EMG study of a limb. CMS provided specific guidance for codes 95860-95864 in its Final Rule for 1998 on page 59090. “To bill these codes, extremity muscles innervated by three nerves (for example, radial ulnar, median, tibial, peroneal, femoral, not sub branches) or four spinal levels must be evaluated, with a minimum of five muscles studied.” Use this standard for all EMG coding as it is now universally accepted.

If EMG testing fails to meet the five muscle standard described above and cannot be reported using a code for other anatomic sites, report limited needle electromyography code 95870. When appropriate, multiple units of 95870 can be reported for limited study of two, three, or four extremities. It may be necessary to add modifier 59 to additional units of 95870 with some payers.