No office rate
Choose 61001 for cranial subdural-space access; choose 61000 when the physician punctures a ventricular cavity.
On this page
CMS RVU26D · Effective 2026-10-01
61001 Subdural aspiration Medicare reimbursement rates in Kentucky
Report this service for needle access to the cranial subdural space to aspirate a fluid collection or deliver medication into that space. Compare 61001 office and facility rates across CMS payment localities in Kentucky.
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 61001 in Kentucky?
Kentucky 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
$100.03
1 of 1 localities have a supported rate.
Payment area: Kentucky
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.
Neurosurgery
About 61001: Subdural fluid aspiration by puncture
Report this service for needle access to the cranial subdural space to aspirate a fluid collection or deliver medication into that space.
A neurosurgeon or other qualified physician uses a needle to enter the cranial subdural space, most often to remove fluid from a subdural collection such as an effusion or hygroma. The code also encompasses medication delivery through this subdural puncture. It is distinct from withdrawing fluid from a ventricular cavity, a cistern, or a shunt reservoir; the documented access site determines the appropriate code.
Report the service when the procedure record supports subdural-space access and aspiration or medication delivery. Document the clinical indication, the space entered, the side or sides treated, and what was aspirated or injected. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. The code is priced as bilateral; modifier 50 does not increase payment. When other procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Medicare does not pay an assistant at surgery for this code; co-surgeons and team surgery are not permitted.
CMS billing rules for 61001
- 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
- The code is already priced as bilateral; modifier 50 does not increase payment.
- 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 RVU1.45 · 46%
- Practice expense (office) RVU1.12 · 35%
- Malpractice RVU0.60 · 19%
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.
61001 compared with similar codes
Office rates for Kentucky, from the same CMS release.
No office rate
61050 addresses access through a cisternal puncture. Use 61001 when the documented target is the cranial subdural space.
No office rate
61070 involves puncturing shunt tubing or its reservoir. This code describes direct puncture of the cranial subdural space.
Compare 61001 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
Kentucky →
Office / nonfacility
Unavailable
Facility
$100.03
Need rates for a whole code list?
Fee-sheet and API access are in early access. Tell us which codes and locations your team needs.
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 61001 in Kentucky.
PPRRVU2026_Oct_nonQPP.csv
6,734
- Code
- 61001
- Physician work
- 1.45
- Practice expense
- 1.12
- Malpractice
- 0.60
GPCI2026.csv
55
- Locality
- Kentucky
- Physician work
- 1.000
- Practice expense
- 0.889
- Malpractice
- 0.915
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 1.45 | × 1.000 | 1.4500 |
| Practice expense | 1.12 | × 0.889 | 0.9957 |
| Malpractice | 0.60 | × 0.915 | 0.5490 |
| Total RVUs | 2.9947 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Kentucky$100.03
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 1.45 | 1 |
| Practice expense | 1.12 | 0.889 |
| Malpractice | 0.6 | 0.915 |
(1.45 × 1 + 1.12 × 0.889 + 0.6 × 0.915) × $33.4009 = $100.03
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.
61001 billing questions
How is this code different from 61000?
This code is for puncture of the cranial subdural space. Code 61000 is used when the target is a ventricular cavity.
Should modifier 50 be added for bilateral treatment?
CMS prices this code as bilateral, and modifier 50 does not increase payment. Document which side or sides were treated.
What same-day care is included?
The code has a 0-day global period, so same-day preoperative and postoperative care is included in the procedure.
Can an assistant surgeon or co-surgeon be reported?
Medicare does not pay an assistant at surgery for this code. Co-surgeons and team surgery are not permitted.
How does the multiple-procedure rule affect payment?
For procedures performed in the same session, the highest-valued procedure is paid in full and the other procedures are paid at 50%.
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.
6,7316080F,,Pt/caregiver queried falls,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
6,7326090F,,Pt/caregiver counsel safety,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
6,73361000,,Remove cranial cavity fluid,A,,1.54,1.15,NA,1.15,,0.64,3.33,3.33,0,000,0.00,0.00,0.00,2,2,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,73461001,,Remove cranial cavity fluid,A,,1.45,1.12,NA,1.12,,0.60,3.17,3.17,0,000,0.00,0.00,0.00,2,2,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,7356100F,,Verify pt site pxd docd,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
6,7366101F,,Safety counseling dementia,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
6,73761020,,Remove brain cavity fluid,A,,1.47,0.97,NA,0.97,,0.51,2.95,2.95,0,000,0.00,0.00,0.00,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5208102,IN,00,INDIANA,1.000,0.927,0.486
5305102,IA,00,IOWA,1.000,0.915,0.397
5405202,KS,00,KANSAS,1.000,0.904,0.504
5515102,KY,00,KENTUCKY,1.000,0.889,0.915
5607202,LA,01,NEW ORLEANS,1.000,0.941,1.136
5707202,LA,99,REST OF LOUISIANA,1.000,0.885,0.958
5814112,ME,03,SOUTHERN MAINE,1.000,0.991,0.631