TL;DR: The Centers for Medicare & Medicaid Services modified NCD 65, the National Coverage Determination governing Medicare coverage of osteogenic stimulators, effective January 9, 2026. Here's what billing teams need to know.
This update to the CMS osteogenic stimulators coverage policy clarifies medical necessity criteria for both electrical and ultrasonic devices billed as durable medical equipment under Medicare. The policy does not list specific HCPCS or CPT codes in the current document — more on that below. If your practice or DME supplier bills for bone growth stimulators, review this policy before claims go out in 2026.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | CMS (Centers for Medicare & Medicaid Services) |
| Policy | Osteogenic Stimulators — NCD 65 |
| Policy Code | NCD 65 Medicare |
| Change Type | Modified |
| Effective Date | January 9, 2026 |
| Impact Level | High |
| Specialties Affected | Orthopedic surgery, spine surgery, DME suppliers, neurosurgery |
| Key Action | Audit your documentation for serial radiograph requirements and fracture nonunion timelines before submitting claims in 2026 |
CMS Osteogenic Stimulator Coverage Criteria and Medical Necessity Requirements 2026
NCD 65 covers two distinct device types: electrical osteogenic stimulators and ultrasonic osteogenic stimulators. The coverage rules differ between them, and conflating the two is a fast path to a claim denial.
Electrical stimulators come in two forms — noninvasive and invasive (implantable). The coverage policy treats them separately. Ultrasonic stimulators operate under their own set of nationally covered indications. Know which device your patient is getting before you touch a claim.
Electrical Osteogenic Stimulators — Noninvasive
CMS covers the noninvasive electrical stimulator for four specific indications:
| # | Covered Indication |
|---|---|
| 1 | Nonunion of long bone fractures |
| 2 | Failed fusion, where at least nine months have passed since the last surgery |
| 3 | Congenital pseudarthroses |
| 4 | As an adjunct to spinal fusion surgery (effective July 1, 1996) for patients at high risk of pseudarthrosis — either because of a previously failed fusion at the same site, or because they're undergoing a multiple-level fusion involving three or more vertebrae (e.g., L3–L5, L4–S1) |
The nonunion criteria carry specific timelines that your documentation must support. As of September 15, 1980, nonunion exists only after six or more months have passed without fracture healing. That's the floor.
The harder requirement came later. Effective April 1, 2000, CMS added a serial radiograph standard. Nonunion is only confirmed when serial radiographs show that fracture healing has completely stopped for three or more months before treatment begins. Those serial radiographs must include at least two sets of images. Each set must include multiple views of the fracture site. The two sets must be separated by at least 90 days.
That's not a soft documentation preference — it's a hard medical necessity requirement. If the chart doesn't show two separate radiograph sets, 90 days apart, with multiple views each, your claim is exposed.
Electrical Osteogenic Stimulators — Invasive (Implantable)
The invasive stimulator has a narrower covered indications list. CMS covers it for:
| # | Covered Indication |
|---|---|
| 1 | Nonunion of long bone fractures |
| 2 | As an adjunct to spinal fusion surgery (effective July 1, 1996) for the same high-risk pseudarthrosis criteria described above — prior failed fusion at the same site or multiple-level fusion involving three or more vertebrae |
The same nonunion timing rules apply. Six months without healing, plus serial radiographs confirming healing cessation for three or more months, separated by at least 90 days.
Congenital pseudarthroses and failed fusion are not covered indications for the invasive device. That's a material difference from the noninvasive list. Don't bill the invasive device for those indications.
Ultrasonic Osteogenic Stimulators
Ultrasonic devices carry their own covered indication under NCD 65. Effective January 1, 2001, CMS covers ultrasonic osteogenic stimulators as medically reasonable and necessary for the treatment of nonunion fractures.
One additional rule applies here: CMS explicitly prohibits concurrent use with other noninvasive osteogenic devices. If a patient is already on a noninvasive electrical stimulator, the ultrasonic device is not covered at the same time. This is a documentation and clinical coordination issue as much as a billing one.
The NCD 65 policy does not address whether prior authorization is required at the national level — that can vary by Medicare Administrative Contractor. Check with your MAC for regional requirements, especially for implantable devices or cases where the clinical picture is borderline.
CMS Osteogenic Stimulator Exclusions and Non-Covered Indications
The policy is specific about what falls outside coverage. For the invasive stimulator, congenital pseudarthroses and failed fusion (nine-month rule) are not nationally covered indications — only the noninvasive device covers those.
Concurrent use of ultrasonic and noninvasive electrical stimulators is explicitly non-covered. Billing for both simultaneously will trigger a denial.
Nonunion claims without adequate radiographic documentation don't meet medical necessity under this coverage policy. A physician's note asserting nonunion is not sufficient on its own. The serial radiograph standard is the evidentiary bar.
Coverage Indications at a Glance
| Indication | Device Type | Status | Notes |
|---|---|---|---|
| Nonunion of long bone fractures | Noninvasive electrical | Covered | Requires 6+ months without healing; serial radiographs confirming cessation for 3+ months, minimum 2 sets, 90 days apart |
| Nonunion of long bone fractures | Invasive (implantable) electrical | Covered | Same radiographic documentation requirements apply |
| Nonunion fractures | Ultrasonic | Covered | Effective January 1, 2001; cannot be used concurrently with noninvasive electrical device |
| Failed fusion (9+ months post-surgery) | Noninvasive electrical | Covered | Must document at least nine months elapsed since last surgery |
| Failed fusion (9+ months post-surgery) | Invasive electrical | Not Covered | Not a nationally covered indication for invasive device |
| Congenital pseudarthroses | Noninvasive electrical | Covered | National coverage; confirm MAC has no additional LCD requirements |
| Congenital pseudarthroses | Invasive electrical | Not Covered | Not a nationally covered indication for invasive device |
| Spinal fusion adjunct — high risk of pseudarthrosis (prior failed fusion at same site or 3+ level fusion) | Noninvasive electrical | Covered | Effective July 1, 1996 |
| Spinal fusion adjunct — high risk of pseudarthrosis (prior failed fusion at same site or 3+ level fusion) | Invasive electrical | Covered | Effective July 1, 1996; 3+ vertebrae required for multiple-level fusion designation |
| Concurrent use of ultrasonic + noninvasive electrical stimulator | Both | Not Covered | Explicitly prohibited under NCD 65 |
CMS Osteogenic Stimulator Billing Guidelines and Action Items 2026
This policy update is effective January 9, 2026. Here's what your billing team needs to do now.
| # | Action Item |
|---|---|
| 1 | Audit your serial radiograph documentation before submitting any nonunion claims. The April 1, 2000 requirement is not new, but this policy update makes it the active standard. You need at least two sets of radiographs, multiple views each, separated by a minimum of 90 days. If the chart doesn't support that, the claim isn't ready. |
| 2 | Separate your electrical stimulator claims by device type. Noninvasive and invasive devices have different covered indications under NCD 65. Build that distinction into your charge capture workflow. A claim for an invasive stimulator billed against a congenital pseudarthrosis diagnosis will not meet medical necessity. |
| 3 | Flag concurrent ultrasonic and noninvasive electrical stimulator cases immediately. If any patient file shows both device types ordered at the same time, that's a coverage conflict under this policy. Coordinate with the ordering physician before claims go out. |
| 4 | Verify your MAC's local coverage determination for regional requirements. NCD 65 sets the national floor, but your Medicare Administrative Contractor may have an LCD with additional documentation or prior authorization requirements — especially for implantable devices. Pull your MAC's LCD on osteogenic stimulators and compare it against NCD 65. |
| 5 | Confirm spinal fusion claims meet the three-vertebrae threshold. For both device types, coverage as a spinal fusion adjunct requires either a prior failed fusion at the same site or a multiple-level fusion involving three or more vertebrae. Two-level fusions don't qualify. Make sure the operative report supports this if you're billing osteogenic stimulator use in a spine case. |
| 6 | Confirm the six-month nonunion timeline is documented in the record. Your physician must document that six or more months have passed without fracture healing. That timeline, combined with the serial radiograph evidence of healing cessation, is the complete medical necessity package for nonunion claims. |
| 7 | Check reimbursement rates with your MAC or DME fee schedule. NCD 65 does not set payment rates — those run through the DME fee schedule. Confirm current reimbursement levels for osteogenic stimulator claims with your MAC's fee schedule, especially if you're billing for implantable devices. |
If your caseload includes a high volume of spine surgery or long bone fracture cases, talk to your compliance officer before January 9, 2026. The documentation requirements here are specific, and the financial exposure on a nonunion claim without proper radiographic evidence is real.
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Osteogenic Stimulators Under NCD 65
The current NCD 65 policy document does not list specific CPT, HCPCS, or ICD-10 codes. This is the real issue for osteogenic stimulator billing — the code mapping lives at the MAC level, not in the national determination itself.
Your MAC's LCD for osteogenic stimulators will contain the operative HCPCS codes (typically in the E-code range for DME equipment) and the ICD-10-CM diagnosis codes that support medical necessity. Pull that LCD directly from your MAC's website and cross-reference it against NCD 65's coverage criteria.
Do not assume a code list from a prior policy version still applies. MAC LCDs update independently of the NCD. Verify current codes before the effective date of January 9, 2026.
If your billing team needs help mapping the NCD 65 criteria to specific HCPCS and diagnosis codes, loop in your DME billing consultant or compliance officer. This is not a gap worth bridging with assumptions.
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