Noninvasive application of low-intensity ultrasound energy at a fracture site to stimulate bone healing without surgical intervention.
Verified May 8, 2026 · 5 sources ↓
- Medicare
- $54.78
- Total RVUs
- 1.64
- Global, days
- 0
- Region
- General
Documentation requirements
What must appear in the operative or office note to support the claim.
Source · Editorial brief grounded in 5 cited references ↓
- Fracture site and bone(s) involved, with laterality noted
- Clinical indication: fresh fracture requiring accelerated healing OR established nonunion with documented failure of standard healing
- Confirmation that stimulation was noninvasive and nonoperative — device applied externally
- Prior authorization number or medical necessity documentation if payer requires it
- Statement that this is a non-spinal indication (spinal sites require HCPCS E0760 or E0748 per payer policy)
- Provider type and supervision level if delivered by non-physician staff
Applicable modifiers
Modifiers commonly billed with this code.
Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual
What this code covers
Source · Editorial summary grounded in 5 cited references ↓
CPT 20979 covers the noninvasive, nonoperative use of low-intensity ultrasound stimulation to promote bone healing. The device is applied externally over the skin or cast surface — no incision, no implanted hardware. Typical indications include fresh fractures where accelerated healing is sought and established nonunions where standard healing has stalled.
This code covers the physician or qualified provider's professional service of applying the stimulation. The device itself, when supplied separately (e.g., for home use), is reported under HCPCS E0760 — not 20979. For any spinal-level bone growth stimulation, UnitedHealthcare and other major payers require HCPCS E0748 instead of 20979; filing 20979 for a spinal indication is a common denial trigger.
The global period is 000, meaning no pre- or post-operative work is packaged in. Same-day E/M services require modifier 25 to survive bundling edits. Because RVUs are low and the procedure is noninvasive, payers scrutinize medical necessity documentation closely — prior authorization is required by many commercial plans.
RVU & reimbursement
Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.
Source · CMS Physician Fee Schedule, RVU26A · January 2026
| Work RVU | 0.6 |
| Practice expense RVU | 0.97 |
| Malpractice RVU | 0.07 |
| Total RVU | 1.64 |
| Medicare national rate | $54.78 |
| Global period | 0 days |
Payment by site of service
Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.
Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026
| Setting | Medicare rate (national) |
|---|---|
Office (PFS non-facility) Procedure performed in physician's office | $54.78 |
HOPD (APC 5731) Hospital outpatient department | $29.55 |
Common denial reasons
The recurring reasons claims for CPT 20979 get rejected.
Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓
- Spinal-level fracture billed under 20979 instead of HCPCS E0748 — UHC and others require the HCPCS code for all spinal sites
- Missing or insufficient medical necessity documentation; payers require evidence of nonunion or clinical rationale for fresh fracture use
- Prior authorization not obtained before service; many commercial plans require pre-auth for bone growth stimulators
- Duplicate billing when device supply (E0760) and professional service (20979) are both filed without clear distinction
- Same-day E/M billed without modifier 25, triggering bundling edit against the 000-global procedure
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 5 cited references ↓
01When should I use 20979 versus HCPCS E0760?
02Can I bill 20979 for spinal fractures?
03Does 20979 require prior authorization?
04What modifier applies if I also see the patient in the office on the same day?
05Is 20979 covered by Medicare for fresh fractures?
06Can 20979 be billed bilaterally with modifier 50?
Sources & references
Editorial content was developed using the following public sources. Last verified May 8, 2026.
- 01CMS Physician Fee Schedule 2026
- 02uhcprovider.comhttps://www.uhcprovider.com/content/dam/provider/docs/public/policies/comm-medical-drug/electrical-ultrasound-bone-growth-stimulators.pdf
- 03manuals.health.milhttps://manuals.health.mil/DisplayManualPdfFile/2022-10-19/AsOf/TP08/C4S6_2.pdf
- 04pacificsource.comhttps://pacificsource.com/sites/default/files/2022-12/Bone%20Growth%20%28Electronic%20and%20Ultrasonic%29%20Stimulators.pdf
- 05cms.govhttps://www.cms.gov/files/document/04-chapter4-ncci-medicare-policy-manual-2026-final.pdf
Mira AI Scribe
Mira's AI scribe captures the fracture site, bone name, laterality, and the clinical rationale (fresh fracture vs. nonunion) directly from dictation. It flags when the anatomical site is spinal — prompting a switch to HCPCS E0748 before the claim is built — and notes whether prior authorization was obtained. That prevents the two most common 20979 denials: wrong-code-for-spine and missing medical necessity documentation.
See how Mira captures CPT 20979 documentation