Botulinum toxin chemodenervation of neck muscles for cervical dystonia, reported once per session regardless of how many neck muscles are injected, excluding the larynx.
- Medicare
- $143.62
- Work RVU
- 1.49
- Global, days
- 10
- Region
- Spine
Documentation requirements
What must appear in the operative or office note to support the claim.
Source · Editorial brief grounded in 3 cited references ↓
- Cervical dystonia diagnosis and clinical findings
- Each muscle injected and dose per muscle
- Total drug units administered and units wasted
- Lot number and drug name
- Guidance method used, if any
- Date of last injection series
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 3 cited references ↓
64616 covers chemodenervation of the neck muscles for cervical dystonia, such as sternocleidomastoid, splenius capitis, and trapezius injections for torticollis. It is billed once per session no matter how many muscles are treated. It has a 10-day global.
Ortho practices see it mostly through PM&R or neurology colleagues, often when a patient referred for neck pain turns out to have dystonia. The drug is billed separately with its J-code and units, with any wasted drug reported on its own line using modifier JW, or JZ when none was wasted. EMG or electrical stimulation guidance is a separate add-on (95873 or 95874). Report one guidance method per session, not two.
The diagnosis matters. Payers cover botulinum toxin for cervical dystonia (G24.3), not for routine neck strain or mechanical neck pain. Prior authorization is common for the drug itself, and many payers limit injections to roughly every 12 weeks.
RVU & reimbursement
Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.
Source · CMS Physician Fee Schedule, RVU26A · January 2026
Work RVU vs. total RVU
The work RVU (1.49) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (4.3) adds practice overhead and malpractice, and is what drives the Medicare payment below.
| Work RVU | 1.49 |
| Practice expense RVU | 2.31 |
| Malpractice RVU | 0.5 |
| Total RVU | 4.3 |
| Medicare national rate | $143.62 |
| Global period | 10 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 | $143.62 |
HOPD (APC 5441) Hospital outpatient department | $313.60 |
ASC (PI P3) Ambulatory surgical center (freestanding) | $77.88 |
Common denial reasons
The recurring reasons claims for CPT 64616 get rejected.
Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓
- Diagnosis of neck pain or strain instead of cervical dystonia
- Injections repeated too soon
- Drug units do not match the administration record
- Wasted drug not reported with JW or JZ missing
- More than one guidance code billed
- No prior authorization for the toxin
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 3 cited references ↓
01Is 64616 billed per muscle?
02Can EMG guidance be billed with 64616?
03Can 64616 be used for neck pain?
04Do I need JW or JZ with botulinum toxin?
Sources & references
Editorial content was developed using the following public sources.
Mira Scribe
Mira Scribe notes record each muscle, the dose given, and the dystonia findings, which lines up the procedure, drug units, and diagnosis on the claim.
See how Mira captures CPT 64616 documentation