Spinal Cord Stimulators (Dorsal Column Stimulators)
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Medical necessity and coverage criteria for trial and permanent implantation of spinal cord stimulators, including neuropathic pain and refractory angina; prior authorization and documentation requirements for members and providers.
Added a requirement that following a failed initial short-term trial, a repeat trial is considered not medically necessary.
Added detailed requirements for optimal pharmacological treatment for angina prior to SCS consideration.
Specified trial duration of 3-7 days for short-term spinal cord stimulator trials.
Coverage Criteria for Spinal Cord Stimulators
Trial placement for neuropathic/intractable pain
Covered when ALL of the following are met:
Supported by list of conditions in policy
Conservative therapies must be documented; for certain neuropathic pain indications at least 6 months of standard therapy is required where specified.
Behavioral health evaluation must show no inadequately controlled mental/behavioral health conditions that would contraindicate device placement.
Trial duration specified in policy.
Applies where specified in policy.
Permanent placement after successful trial
Covered when ALL of the following are met:
Permanent placement requires meeting the trial criteria.
Trial and permanent placement for intractable angina
Covered when ALL of the following are met:
Angiography results should be submitted with authorization requests.
Detailed pharmacologic requirements recorded in policy (added/revised 06/2025).
Behavioral health documentation and trial response must be submitted.
Requests for peripherally implanted nerve stimulation (PENS) and occipital nerve stimulators are not processed under this spinal cord stimulator policy. Providers should refer PENS requests to the Electrical Stimulation Devices policy (CWQI: HCS-0027) and requests for occipital nerve stimulators for chronic headache or cervicogenic pain to the Occipital Nerve Stimulation policy (CWQI: A-0716).
The policy notes that additional indications may be covered at the discretion of the health plan, and that compliance with applicable Medicare NCDs/LCDs and the Medicare Benefit Policy Manual is required where applicable. Providers may submit documentation supporting other indications for consideration under the plan's discretion.
Following a failed initial short-term spinal cord stimulator trial, a repeat short-term trial is considered not medically necessary. Providers requesting repeat trials after an unsuccessful initial 3–7 day trial should expect that such repeat trials may be denied unless exceptional, documented clinical justification is provided.
The referenced sections do not contain explicit lists of procedures labeled as 'not medically necessary' beyond the repeat short-term trial statement. Where exclusions or noncoverage apply, the policy refers to other named policies or to plan discretion rather than enumerating additional not-medically‑necessary procedures in these sections.
Procedure, Supply and Diagnosis Codes
| 63650 | Percutaneous implantation of neurostimulator electrode array, epidural. |
| 63655 | Laminectomy for implantation of neurostimulator electrodes, plate/paddle, epidural. |
| 63663 | Revision of spinal neurostimulator electrode plate/paddle(s) placed via laminotomy or laminectomy, including fluoroscopy, when performed. |
| 63685 | Insertion or replacement of spinal neurostimulator pulse generator or receiver, direct or inductive coupling. |
| 64561 | Peripheral nerve (excludes sacral nerve) = Sacral nerve (transforaminal placement), including image guidance, if performed. |
| 64590 | Insertion or replacement of peripheral or gastric neurostimulator pulse generator or receiver, direct or inductive coupling. |
| 95970 | Electronic analysis of implanted neurostimulator pulse generator system; simple or complex. |
| C1778 | Lead, neurostimulator (implantable). |
| C1787 | Patient programmer, neurostimulator. |
| C1820 | Generator, neurostimulator (implantable), with rechargeable battery and charging system. |
| L8680 | Implantable neurostimulator electrode, each. |
| L8682 | Implantable neurostimulator electrode, each (alternate). |
| L8683 | Implantable neurostimulator radiofrequency receiver. |
| L8685 | Radiofrequency transmitter (external) for use with implantable neurostimulator radiofrequency receiver. |
| B02.29 | Other postherpetic nervous system involvement. |
| G03.1 | Chronic meningitis. |
| G54.0-G54.9 | Nerve root and plexus disorders. |
| G56.4-G56.42 | Causalgia of upper limb. |
| G56.8-G56.92 | Other specified mononeuropathies of unspecified upper limb. |
| G57.70-G57.72 | Causalgia of lower limb. |
| G57.80-G57.9 | Other specified mononeuropathies of lower limb. |
| G89.2-G89.4 | Chronic pain, not elsewhere classified. |
| G90.50-G90.9 | Complex regional pain syndrome I (CRPSI). |
| I20.0 | Unstable angina. |
| B02.29 | Other postherpetic nervous system involvement |
| G03.1 | Chronic meningitis |
| G54.0-G54.9 | Nerve root and plexus disorders |
| G56.4-G56.42 | Causalgia of upper limb |
| G56.8-G56.92 | Other specified mononeuropathies of unspecified upper limb |
| G57.70-G57.72 | Causalgia of lower limb |
| G57.80-G57.9 | Other specified mononeuropathies of lower limb |
| G89.2-G89.4 | Chronic pain, not elsewhere classified |
| G90.50-G90.9 | Complex regional pain syndrome I (CRPS I) |
| I20.0 | Unstable angina |
| 160.7 | National Coverage Determination for Electrical Nerve Stimulators |
Provider Requirements and Prior Authorization
Prior authorization required; affected CPT/HCPCS/supply codes listed
Prior authorization is required. Submit clinical documentation specified in the policy; the listed CPT/HCPCS and supply/device codes require review prior to payment.
Adhere to Medicare NCD 160.7 and applicable LCDs
Providers must follow Medicare coverage rules where applicable; coverage for electrical nerve stimulators should adhere to NCD 160.7 and any applicable LCDs.
- NCD referenced: National Coverage Determination 160.7 (Electrical Nerve Stimulators)
- Check applicable LCDs and CMS coverage database for local determinations
Conservative therapy must be tried and failed before trial
Documented failure of conservative therapies is required before a short-term SCS trial; conservative methods include pharmacologic therapy, physical therapy, and psychological/CBT.
- Pharmacologic: NSAIDs, tricyclic antidepressants, anticonvulsants (unless contraindicated or not tolerated)
- Physical therapy and psychological or cognitive behavioral therapies
- For certain neuropathic indications, at least 6 months of standard therapy is required
Behavioral health clearance and patient ability/willingness required
Providers must obtain psychologist/psychiatrist face-to-face evaluation and clearance prior to SCS trial and ensure the patient is capable of operating the device and willing to comply with the treatment plan.
- Face-to-face behavioral health evaluation and documented clearance required before trial
- Document patient ability and willingness to operate the stimulator
Information required with prior authorization
Include the following with prior authorization requests: history & physical showing objective basis for pain, record of conservative treatments and responses, psychologist/psychiatrist clearance, angiography results for angina, and trial response for permanent implant requests.
- History and physical documenting objective basis for patient's pain
- Record of conservative treatments tried and patient response
- Documentation of clearance by a psychologist or psychiatrist
- Angiography results for angina patients
- Patient's response to SCS trial when requesting permanent implantation
Comply with Medicare Benefit Policy Manual §15.50 and applicable NCDs/LCDs
Where Medicare rules apply, providers must comply with Medicare Benefit Policy Manual Chapter 15 §50 and referenced NCDs/LCDs when submitting requests or treating Medicare beneficiaries.
- Refer to Medicare Benefit Policy Manual (Pub.100-2), Chapter 15, §50
- Use CMS coverage database for NCD/LCD lookup
Repeat short-term trial after failed initial trial is considered not medically necessary
Following a failed initial short-term trial, a repeat short-term trial is considered not medically necessary and may be denied.
- Do not submit requests for a repeat short-term trial after an initial failed trial; such requests are subject to denial
Noncompliance with Medicare determinations may affect coverage; other indications considered case-by-case
Noncompliance with applicable NCDs/LCDs or Medicare manual requirements may affect coverage; additional indications not in the policy may be considered on a case-by-case basis by the plan.
- Failure to follow NCD/LCD or Medicare manual guidance can impact coverage decisions
- Additional indications may be covered at the health plan’s discretion
Prior Conservative Therapy Requirements
Documented failure of conservative measures prior to trial
Documented failure of conservative measures prior to trial
Documentation must be provided; for certain neuropathic pain indications at least 6 months of standard therapy is required where specified.
Policy specifies 6+ months where indicated.
Frequency and Repeat Trial Limits
Imaging and Diagnostic Requirements
Imaging (MRI/angiography) required where applicable for SCS trial and implantation
Obtain and submit relevant imaging when applicable—objective documentation of pathology (e.g., abnormal MRI) is required for neuropathic pain claims; angiography results are required for angina patients.
- Objective pathology (abnormal MRI) documented in history/physical for neuropathic pain
- Angiography results documenting significant CAD when SCS is for angina
CMS manuals and coverage determinations referenced; no extra procedure-specific imaging mandates listed
CMS manuals, NCD 160.7, and applicable LCDs are cited as governing coverage decisions; the policy does not impose additional procedure-specific imaging mandates beyond requiring objective documentation where relevant.
- CMS Medicare Benefit Policy Manual and NCD/LCDs should be consulted for coverage rules
- No separate procedure-specific imaging mandates are listed in this policy
Background on Spinal Cord Stimulation
Spinal cord stimulators deliver low-voltage electrical stimulation to the dorsal columns of the spinal cord to modulate pain transmission. Devices typically consist of lead(s), extension wire, and a power source (implantable pulse generator or an external transmitter/receiver for radiofrequency systems). Implantation is commonly performed in two stages: a temporary epidural electrode trial (typically 3–7 days) to assess effectiveness, followed by permanent implantation of leads and a pulse generator when the trial demonstrates adequate symptom relief.
Definitions and Key Terms
Not Covered / Alternate Policy References
Peripherally implanted nerve stimulation (PENS) and occipital nerve stimulators for chronic headache or cervicogenic pain are handled under separate policies and are not managed by this spinal cord stimulator policy; see Electrical Stimulation Devices (CWQI: HCS-0027) and Occipital Nerve Stimulation (CWQI: A-0716) for coverage guidance.
Within the cited appendices and CMS references there are no additional explicit statements listing other pain procedures as 'not covered.' The document instead indicates that additional indications may be considered at the health plan's discretion and that Medicare NCDs/LCDs apply where relevant.
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