61640
No office rateDilate ic vasospasm init
61650 represents prolonged infusion of a nonthrombolytic drug. 61640 represents balloon dilation for intracranial vasospasm.
On this page
CMS RVU26D · Effective 2026-10-01
61650 Endovascular drug infusion Medicare reimbursement rates in Colorado
Reports prolonged endovascular infusion of a nonthrombolytic medication into an initial vessel, including catheter placement and imaging supervision and interpretation. Compare 61650 office and facility rates across CMS payment localities in Colorado.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 61650 in Colorado?
Colorado has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$509.80
1 of 1 localities have a supported rate.
Payment area: Colorado
One mapped payment locality.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Neurointerventional
About 61650: Prolonged intra-arterial drug infusion
Reports prolonged endovascular infusion of a nonthrombolytic medication into an initial vessel, including catheter placement and imaging supervision and interpretation.
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.
CMS billing rules for 61650
- Global period
- Minor procedure with a 0-day global period: same-day preoperative and postoperative care is included.
- Multiple procedures
- Standard multiple procedure reduction: the highest-valued procedure is paid in full and others at 50% when performed in the same session.
- Bilateral procedures
- Bilateral adjustment does not apply; the descriptor or anatomy makes modifier 50 inappropriate.
- Assistant at surgery
- Statutory restriction: assistant at surgery is not paid.
- Co-surgeons
- Co-surgeons not permitted.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU9.75 · 62%
- Practice expense (office) RVU2.73 · 17%
- Malpractice RVU3.19 · 20%
699
Medicare services in 2024 · #3262 by national volume
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 compared with similar codes
Office rates for Colorado, from the same CMS release.
No office rate
61650 is for the initial vessel. 61651 is the add-on for each additional vessel and is not reported alone.
No office rate
61650 delivers a pharmacologic agent by prolonged infusion; 61624 describes endovascular occlusion or embolization of a central nervous system vessel.
Compare 61650 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Colorado →
Office / nonfacility
Unavailable
Facility
$509.80
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 61650 in Colorado.
PPRRVU2026_Oct_nonQPP.csv
6,856
- Code
- 61650
- Physician work
- 9.75
- Practice expense
- 2.73
- Malpractice
- 3.19
GPCI2026.csv
37
- Locality
- Colorado
- Physician work
- 1.012
- Practice expense
- 1.064
- Malpractice
- 0.781
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 9.75 | × 1.012 | 9.8670 |
| Practice expense | 2.73 | × 1.064 | 2.9047 |
| Malpractice | 3.19 | × 0.781 | 2.4914 |
| Total RVUs | 15.2631 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Colorado$509.80
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 9.75 | 1.012 |
| Practice expense | 2.73 | 1.064 |
| Malpractice | 3.19 | 0.781 |
(9.75 × 1.012 + 2.73 × 1.064 + 3.19 × 0.781) × $33.4009 = $509.80
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
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 indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
6,85361641,,Dilat ic vspsm ea vsl sm ter,N,+,4.33,0.00,,0.00,,0.59,4.92,4.92,9,ZZZ,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
6,85461642,,Dilat ic vspsm ea diff ter,N,+,8.66,0.00,,0.00,,1.18,9.84,9.84,9,ZZZ,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
6,85561645,,Perq art m-thrombect &/nfs,A,,14.63,3.69,NA,3.69,,4.31,22.63,22.63,0,000,0.00,0.00,0.00,0,1,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,85661650,,Evasc prlng admn rx agnt 1st,A,,9.75,2.73,NA,2.73,,3.19,15.67,15.67,0,000,0.00,0.00,0.00,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,85761651,,Evasc prlng admn rx agnt add,A,,4.14,1.19,NA,1.19,,1.37,6.70,6.70,0,ZZZ,0.00,0.00,0.00,0,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,85861680,,Intracranial vessel surgery,A,,31.74,20.93,NA,20.93,,13.42,66.09,66.09,0,090,0.11,0.76,0.13,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,85961682,,Intracranial vessel surgery,A,,61.82,28.89,NA,28.89,,25.54,116.25,116.25,0,090,0.11,0.76,0.13,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3401112,CA,69,VISALIA,1.017,1.096,0.536
3501112,CA,70,YUBA CITY,1.017,1.096,0.536
3601112,CA,75,REST OF CALIFORNIA,1.017,1.096,0.536
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899