CPT code 31291: CSF leak repair, sphenoid region2026 Medicare rate & RVUs in Aromas, California
CPT 31291: $1,090.16–$1,230.28 facility across 2 localities in Aromas, CA in 2026 Medicare. Compare each area.
CMS doesn’t publish an office rate for 31291 in Aromas, California.
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 6 sections
Where 31291 pays more and less in Aromas, California
Aromas, California maps to 2 Medicare payment localities in our Census-to-CMS crosswalk. A city name alone doesn’t confirm an address’s payment area.
| Payment locality | Office | Facility |
|---|---|---|
| Salinas, CA | Unavailable | $1,090.16 |
| San Benito County, CA | Unavailable | $1,230.28 |
How payment areas work in Aromas
City limits and Medicare payment areas are different maps. These are the payment areas that cover the city’s counties; the service ZIP decides which one applies.
- Monterey · Monterey County
- San Benito · San Benito County
City boundaries: 2026 Census geography · Census source · CMS county-to-locality definitions
How the 31291 rate is calculated
Each of 31291’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 · 31291
RVUs × geographic indexes × conversion factor
Work19.07
19.07 RVUs× 1.000 GPCI
Practice expense9.50
9.50 RVUs× 1.000 GPCI
Malpractice3.67
3.67 RVUs× 1.000 GPCI
Adjusted RVUs
32.2400
Conversion factor
$33.4009
Medicare rate
$1,076.85
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 31291
31291 has a 10-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 31291
CSF leak repair, sphenoid region
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 010 | Minor procedure: the day of the procedure plus 10 days after are included. |
| Multiple procedures | 3 | Endoscopy family rules apply. |
| Bilateral (modifier 50) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.80/0.10 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 31291
CSF leak repair, sphenoid region
10-day global period ends
Oct 11, 2026
Covers Oct 1, 2026 through Oct 11, 2026 (11 days).
Visit on Oct 31, 2026
After the global period ends: visits and procedures are billed normally.
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
31291 without 50 · national facility
$1,076.85
CSF leak repair, sphenoid region
31291-50 · Bilateral: 150%
$1,615.28
Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).
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
Fee sheets · Coming soon
Put 31291 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
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