No office rate
Both describe an orbitocranial approach to the anterior cranial fossa. Choose 61585 for the intradural route and 61584 for the extradural route.
On this page
CMS RVU26D · Effective 2026-10-01
61585 Orbitocranial approach Medicare reimbursement rates in Minnesota
Reports an intradural orbitocranial route to the anterior cranial fossa when surgery requires access through the orbit and cranium. Compare 61585 office and facility rates across CMS payment localities in Minnesota.
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 61585 in Minnesota?
Minnesota 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
$2880.51
1 of 1 localities have a supported rate.
Payment area: Minnesota
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.
Skull base surgery
About 61585: Intradural orbitocranial approach to anterior fossa
Reports an intradural orbitocranial route to the anterior cranial fossa when surgery requires access through the orbit and cranium.
This code describes an operative route to the anterior cranial fossa that combines orbital and cranial access and enters the dura. Neurosurgeons and craniofacial teams may use this approach for lesions involving the anterior skull base and orbit, such as selected meningiomas. The operative approach is distinct from the definitive work on the lesion; the operative report should make the route and intradural access clear.
Report the code when the documented operation supports this intradural orbitocranial approach, rather than an extradural variant or a different skull-base route. It has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and others at 50%. Modifier 50 identifies bilateral surgery and is paid at 150%. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team surgery is permitted.
CMS billing rules for 61585
- Global period
- Major surgery with a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are 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 procedure with modifier 50 is paid at 150%.
- Assistant at surgery
- Assistant at surgery may be paid.
- Co-surgeons
- Co-surgeons paid only with supporting documentation.
- Team surgery
- Team surgery permitted.
Where the value comes from
- Work RVU41.51 · 43%
- Practice expense (office) RVU38.43 · 39%
- Malpractice RVU17.52 · 18%
20
Medicare services in 2024 · #5932 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.
61585 compared with similar codes
Office rates for Minnesota, from the same CMS release.
No office rate
This is another orbitocranial approach code, but it addresses a different cranial fossa target. Select based on the documented operative route and target.
No office rate
61580 describes a craniofacial approach to the anterior cranial fossa; 61585 is the orbitocranial route with intradural access.
Compare 61585 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
Minnesota →
Office / nonfacility
Unavailable
Facility
$2880.51
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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 61585 in Minnesota.
PPRRVU2026_Oct_nonQPP.csv
6,826
- Code
- 61585
- Physician work
- 41.51
- Practice expense
- 38.43
- Malpractice
- 17.52
GPCI2026.csv
66
- Locality
- Minnesota
- Physician work
- 1.000
- Practice expense
- 1.029
- Malpractice
- 0.296
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 41.51 | × 1.000 | 41.5100 |
| Practice expense | 38.43 | × 1.029 | 39.5445 |
| Malpractice | 17.52 | × 0.296 | 5.1859 |
| Total RVUs | 86.2404 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Minnesota$2880.51
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 41.51 | 1 |
| Practice expense | 38.43 | 1.029 |
| Malpractice | 17.52 | 0.296 |
(41.51 × 1 + 38.43 × 1.029 + 17.52 × 0.296) × $33.4009 = $2880.51
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.
61585 billing questions
How is this code distinguished from 61584?
61585 describes the intradural orbitocranial approach to the anterior cranial fossa. 61584 is the extradural approach.
Does this code describe removal of the lesion?
It identifies the operative approach, not the pathology or definitive lesion work. The operative report should support the approach, and any separately reported lesion procedure must be documented.
What documentation supports reporting 61585?
Document the anterior cranial fossa target, the orbitocranial route, and entry into the dura. The operative details should distinguish it from an extradural approach or another skull-base route.
How does the 90-day global period affect billing?
The day-before preoperative visit and 90 days of related postoperative care are included in the global period.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be available. Co-surgeon payment requires supporting documentation; team surgery is permitted.
How is bilateral surgery handled?
For a bilateral procedure reported with modifier 50, CMS pays at 150%.
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.
6,82361582,,Craniofacial approach skull,A,,34.26,44.35,NA,44.35,,13.53,92.14,92.14,0,090,0.11,0.76,0.13,2,0,2,1,2,9,,33.4009,09,0,99,0.00,0.00,0.00
6,82461583,,Craniofacial approach skull,A,,37.54,34.62,NA,34.62,,15.37,87.53,87.53,0,090,0.11,0.76,0.13,2,0,2,1,2,9,,33.4009,09,0,99,0.00,0.00,0.00
6,82561584,,Orbitocranial approach/skull,A,,36.76,33.67,NA,33.67,,14.34,84.77,84.77,0,090,0.11,0.76,0.13,2,1,2,1,2,9,,33.4009,09,0,99,0.00,0.00,0.00
6,82661585,,Orbitocranial approach/skull,A,,41.51,38.43,NA,38.43,,17.52,97.46,97.46,0,090,0.11,0.76,0.13,2,1,2,1,2,9,,33.4009,09,0,99,0.00,0.00,0.00
6,82761586,,Resect nasopharynx skull,A,,26.79,40.91,NA,40.91,,11.32,79.02,79.02,0,090,0.11,0.76,0.13,2,0,2,1,2,9,,33.4009,09,0,99,0.00,0.00,0.00
6,82861590,,Infratemporal approach/skull,A,,45.86,24.78,NA,24.78,,9.17,79.81,79.81,0,090,0.11,0.76,0.13,2,1,2,1,2,9,,33.4009,09,0,99,0.00,0.00,0.00
6,82961591,,Infratemporal approach/skull,A,,45.84,26.12,NA,26.12,,11.25,83.21,83.21,0,090,0.11,0.76,0.13,2,1,2,1,2,9,,33.4009,09,0,99,0.00,0.00,0.00
6314212,MA,99,REST OF MASSACHUSETTS,1.016,1.053,0.797
6408202,MI,01,DETROIT,1.000,0.965,1.686
6508202,MI,99,REST OF MICHIGAN,1.000,0.913,1.129
6606202,MN,00,MINNESOTA,1.000,1.029,0.296
6707302,MS,00,MISSISSIPPI,1.000,0.861,0.739
6805302,MO,02,METROPOLITAN KANSAS CITY,1.000,0.939,0.977
6905302,MO,01,METROPOLITAN ST. LOUIS,1.000,0.952,1.002