CPT Code 95911: Nerve Conduction Studies, 9–10 Studies

Learn about CPT code 95911 for nerve conduction studies (9–10 tests), including key requirements and relevant coding tips.

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What are nerve conduction studies (9–10)?

Nerve conduction studies (NCS) using CPT 95911 involve performing nine to ten nerve conduction tests to assess peripheral nerve function. These studies measure latency, amplitude, and conduction velocity in motor and sensory nerves, such as the median, ulnar, and sciatic nerves, to diagnose conditions like diabetic neuropathy, carpal tunnel syndrome, or radiculopathy.

Studies must be tailored to the patient’s symptoms and conducted in real time with simultaneous needle EMG when indicated for comprehensive evaluation (Centers for Medicare & Medicaid Services, 2025).

Clinicians performing 95911 should follow the guidelines of the American Association of Neuromuscular & Electrodiagnostic Medicine (AANEM) and the American Medical Association (AMA), documenting the tested nerves, recording the relevant parameters, and integrating the findings into a final diagnosis. This ensures testing meets standards for medical necessity and accurate billing.

CPT code 95911 documentation requirements

For CPT code 95911, thorough documentation is essential to support medical necessity and ensure proper reimbursement. Records should include:

Number and types of nerve conduction studies performed (e.g., median sensory, ulnar motor, femoral nerve, sciatic nerve)
Laterality and location of each test (e.g., right upper limb, left lower limb)
Technical parameters for each nerve tested, including latency, amplitude, and conduction velocity
Clinical indication for testing (e.g., diabetic neuropathy, carpal tunnel syndrome, spinal stenosis, muscle wasting and atrophy)
A concise interpretation and summary of findings, with correlation to the patient’s symptoms and diagnosis code
Clear statement confirming 9 to 10 distinct nerve conduction studies were completed, each compliant with AANEM’s reportable NCS standards
Accurate documentation helps support the use of CPT code 95911 for conditions such as type 2 diabetes mellitus, ulnar nerve lesions, and other nerve disorders. It ensures that healthcare providers meet payer expectations.

CPT code 95911 billing guidelines

CPT code 95911 is used to report nerve conduction studies when 9 to 10 individual tests are performed. To ensure accurate billing and coding, follow these key guidelines:

Bill 95911 CPT code only when nine or ten nerve conduction studies are documented and meet AANEM’s technical standards.
Each study should involve distinct motor or sensory nerve assessments, including conduction velocity, latency, and amplitude. Commonly tested nerves include the ulnar nerve, median nerve, sciatic nerve, and femoral nerve, primarily peripheral nerves, not the spinal cord, although findings may relate to spinal cord or nerve root involvement.
Do not unbundle or combine 95911 with other nerve conduction codes unless additional studies are performed and meet medical necessity criteria.
Confirm that the nerve conduction studies performed support diagnoses such as diabetes mellitus, diabetic neuropathy, carpal tunnel syndrome, spinal stenosis, rheumatoid arthritis, muscular dystrophy, or atrophy not elsewhere classified.
Ensure that documentation justifies the test's use for monitoring disease intensity, identifying nerve root lesions, or evaluating autonomic neuropathy, movement disorders, or neoplasm of cerebral meninges.
Use modifier 59 if studies are performed at multiple sites or require ipsilateral and contralateral stimulation.
Multiple units or repeat testing must be clinically justified—especially when testing upper limbs, cranial nerves, or nerves at the wrist.
Document medical necessity and clinical correlation to type 2 diabetes mellitus, nerve lesions, or end-stage renal disease to prevent denials.

Proper billing ensures that diagnostic tests for neuromuscular junction testing, sensory neuropathy and conduction test, or F wave tests are reimbursed appropriately, particularly when aiding in diagnoses classified elsewhere or related to secondary malignant neoplasm of the nervous system.

Other relevant CPT codes

95907–95913: Nerve conduction studies (1–20+ studies)
95886: Needle EMG, 1 extremity, with NCS

Reference

Centers for Medicare & Medicaid Services. (2025). LCD - Nerve conduction studies and electromyography (L34859). https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdId=34859&ver=34&utm_source

Frequently asked questions

Yes. You can bill the 95911 CPT code alongside EMG codes (like 95886) if nerve conduction studies and electromyography are both performed and documented separately. Ensure each service has a clear medical necessity and meets AANEM guidelines for combined testing.

A single nerve conduction study involves one stimulation of a single nerve—motor or sensory—in one direction. For example, testing the median nerve motor conduction on one side counts as one study.

Each nerve conduction study performed on opposite limbs (e.g., ulnar nerve right and left) is counted separately, as long as medical necessity is supported. Be sure your documentation includes laterality and distinct clinical indications to justify counting them as separate studies.