Billing code 61650: Endovascular drug infusionMedicare rate & RVUs in Oklahoma
Reports prolonged endovascular infusion of a nonthrombolytic medication into an initial vessel, including catheter placement and imaging supervision and interpretation.
CMS doesn’t publish an office rate for 61650 in Oklahoma.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 61650 covers
This code describes endovascular treatment by prolonged infusion of a pharmacologic agent other than a thrombolytic, such as an intra-arterial vasodilator. It is used in neurointerventional care when medication is delivered through a catheter into a vessel; a clinical context can include treating cerebral vasospasm after subarachnoid hemorrhage. The service includes catheter placement and radiological supervision and interpretation, so those elements are not separately represented by this code.
Report 61650 for the initial vessel; report 61651 for each additional vessel when the service meets that add-on code’s requirements. Documentation should identify the treated vessel or vessels, the infused agent, the prolonged infusion, and the clinical indication. Medicare assigns a 0-day global period, including same-day preoperative and postoperative care. For multiple procedures in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery, and co-surgeons and team surgery are not permitted.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
61650 in Oklahoma
| Payment locality | Office | Facility |
|---|---|---|
| Oklahoma | Unavailable | $489.87 |
How the 61650 rate is calculated
Each of 61650’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 61650
RVUs × geographic indexes × conversion factor
Work9.75
9.75 RVUs× 1.000 GPCI
Practice expense2.73
2.73 RVUs× 1.000 GPCI
Malpractice3.19
3.19 RVUs× 1.000 GPCI
Adjusted RVUs
15.6700
Conversion factor
$33.4009
Medicare rate
$523.39
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 61650
The CMS indicators that decide how 61650 is paid alongside other services.
CMS payment indicators · 61650
Endovascular drug infusion
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
61650 without 51 · national facility
$523.39
Endovascular drug infusion
61650-51 · Second procedure: 50%
$261.70
When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).
61650 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 61640Dilate ic vasospasm init
- 61650 represents prolonged infusion of a nonthrombolytic drug. 61640 represents balloon dilation for intracranial vasospasm.
- 61651Drug infusion
- 61650 is for the initial vessel. 61651 is the add-on for each additional vessel and is not reported alone.
- 61624CNS embolization
- 61650 delivers a pharmacologic agent by prolonged infusion; 61624 describes endovascular occlusion or embolization of a central nervous system vessel.
61650 billing questions
When is 61650 reported instead of 61640?
Use 61650 for prolonged infusion of a nonthrombolytic pharmacologic agent. Code 61640 describes initial-vessel balloon dilation for intracranial vasospasm.
How is an additional treated vessel reported?
Use 61650 for the initial vessel and 61651 for each additional vessel when the additional-vessel service is performed.
Can catheter placement or imaging supervision be billed separately?
Catheter placement and radiological supervision and interpretation are included in 61650.
What documentation supports reporting 61650?
Document the indication, infused pharmacologic agent, prolonged infusion, and vessel treated. Identify any additional vessel reported with 61651.
Should modifier 50 be used for bilateral treatment?
No. The CMS bilateral adjustment does not apply to 61650, and modifier 50 is inappropriate.
How are assistant and multiple-procedure claims handled?
Medicare does not pay an assistant at surgery for this code; co-surgeons and team surgery are not permitted. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
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