$254.47–$278.89
Use 95928 for a central motor evoked-potential study of the upper limbs only; use 95939 when both upper and lower limbs are tested.
On this page
CMS RVU26D · Effective 2026-10-01
95939 Motor evoked potentials Medicare reimbursement rates in Oregon
Reports transcranial motor evoked-potential testing of both upper and lower limbs to assess central motor pathway function in a diagnostic evaluation. Compare 95939 office and facility rates across CMS payment localities in Oregon.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 95939 in Oregon?
Oregon has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
$585.66–$645.80
2 of 2 localities have a supported rate.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Neurophysiology
About 95939: Upper and lower limb motor evoked-potential study
Reports transcranial motor evoked-potential testing of both upper and lower limbs to assess central motor pathway function in a diagnostic evaluation.
This study uses transcranial stimulation and records muscle responses in the arms and legs to evaluate motor pathways from the brain through the spinal cord. Neurologists and other clinicians trained in clinical neurophysiology may perform or interpret it, with trained technical staff assisting in physician offices and hospital settings. A clinician may order it when evaluating suspected dysfunction affecting central motor pathways, such as spinal cord disease.
Choose this code when the study covers both upper and lower limbs; codes 95928 and 95929 distinguish upper-limb-only and lower-limb-only studies. The report should identify the tested limb regions, recorded responses, and interpretation. CMS recognizes separately priced professional and technical components: report modifier 26 for interpretation alone, TC for equipment and staff, or no component modifier for the complete service. The code is priced as bilateral, so modifier 50 does not increase payment.
CMS billing rules for 95939
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
- Bilateral procedures
- The code is already priced as bilateral; modifier 50 does not increase payment.
Where the value comes from
- Work RVU2.19 · 12%
- Practice expense (office) RVU15.30 · 87%
- Malpractice RVU0.15 · 1%
52.8K
Medicare services in 2024 · #760 by national volume
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
95939 compared with similar codes
Office rates for Oregon, from the same CMS release.
$248.49–$272.21
Use 95929 for a central motor evoked-potential study of the lower limbs only; use 95939 when both upper and lower limbs are tested.
$397.77–$440.79
Code 95938 evaluates somatosensory pathways in upper and lower limbs. Code 95939 evaluates motor pathways using transcranial stimulation.
Compare 95939 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Portland →
Office / nonfacility
$645.80
Facility
Unavailable
Rest Of Oregon →
Office / nonfacility
$585.66
Facility
Unavailable
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95939 billing questions
When should I report this instead of 95928 or 95929?
Report this code when the motor evoked-potential study includes both upper and lower limbs. Code 95928 is for upper limbs, and 95929 is for lower limbs.
Should I append modifier 50?
No. CMS prices this code as bilateral, and modifier 50 does not increase payment.
How do I report the professional and technical components?
Use modifier 26 for the professional interpretation and TC for the technical service, including equipment and staff. Bill without a component modifier when reporting the complete service.
What documentation supports reporting this code?
Document that both upper and lower limbs were tested, the recorded motor responses, and the clinician's interpretation of the findings.
Can this be reported with somatosensory evoked-potential testing?
It may be reported with 95938 when both motor and somatosensory pathways are evaluated during the encounter. The record should support each distinct study.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
12,69095938,,Somatosensory testing,A,,0.84,11.05,,11.05,NA,0.09,11.98,11.98,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,69195938,26,Somatosensory testing,A,,0.84,0.47,,0.47,,0.04,1.35,1.35,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,69295938,TC,Somatosensory testing,A,,0.00,10.58,,10.58,NA,0.05,10.63,10.63,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,21,0,99,0.00,0.00,0.00
12,69395939,,C motor evoked upr&lwr limbs,A,,2.19,15.30,,15.30,NA,0.15,17.64,17.64,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,69495939,26,C motor evoked upr&lwr limbs,A,,2.19,1.24,,1.24,,0.09,3.52,3.52,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,69595939,TC,C motor evoked upr&lwr limbs,A,,0.00,14.06,,14.06,NA,0.06,14.12,14.12,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,21,0,99,0.00,0.00,0.00
12,69695940,,Ionm in operatng room 15 min,A,,0.60,0.17,NA,0.17,,0.03,0.80,0.80,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,03,0,99,0.00,0.00,0.00