Billing code 23935: Bone drainageMedicare rate & RVUs in Redding
Reports deep operative drainage involving the humerus or elbow when the surgeon opens the bone cortex to reach and drain the affected site.
In Redding, Medicare pays $502.16 for 23935 in a facility. There’s no office rate.
Check a contract rate as a % of Medicare · 23935 nationwide
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 11 sections
What 23935 covers
This service involves a deep incision to reach the humerus or elbow and opening the bone cortex to drain an affected site, such as a bone abscess. It is typically performed by an orthopedic surgeon in an operating room when the infection or collection requires access through the cortex rather than drainage of a superficial or soft-tissue space.
Select 23935 when the operative work includes opening the cortex of the humerus or elbow; the operative report should identify the anatomic site, the deep collection or bone involvement, and the cortical opening and drainage performed. CMS classifies the service as major surgery with 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%. For bilateral procedures, modifier 50 is paid at 150%. Assistant-at-surgery payment requires documented medical necessity; 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.
How Redding compares for 23935
Across 109 of 109 payment localities, the facility rate for 23935 runs from $439.85 in Arkansas to $605.96 in San Jose-Sunnyvale-Santa Clara (San Benito Cnty). Redding pays $502.16. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Redding · this page$502.16
- Bakersfield · California$505.74+$3.58
- Chico · California$502.16
- El Centro · California$502.38+$0.22
- Fresno · California$502.16
- Hanford-Corcoran · California$502.16
- Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty) · California$533.95+$31.79
Other areas in California first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| MaderaCalifornia | — | $502.16 |
| MercedCalifornia | — | $502.16 |
| ModestoCalifornia | — | $502.16 |
| NapaCalifornia | — | $564.70 |
| Oxnard-Thousand Oaks-VenturaCalifornia | — | $529.22 |
| Rest Of CaliforniaCalifornia | — | $502.16 |
| Riverside-San Bernardino-OntarioCalifornia | — | $516.13 |
| Sacramento-Roseville-FolsomCalifornia | — | $522.47 |
| SalinasCalifornia | — | $520.45 |
| San Diego-Chula Vista-CarlsbadCalifornia | — | $529.54 |
| San Francisco-Oakland-Berkeley (Marin Cnty)California | — | $591.69 |
| San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)California | — | $590.21 |
| San Jose-Sunnyvale-Santa Clara (San Benito Cnty)California | — | $605.96 |
| San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)California | — | $599.92 |
| San Luis Obispo-Paso RoblesCalifornia | — | $512.66 |
| Santa Cruz-WatsonvilleCalifornia | — | $532.05 |
| Santa Maria-Santa BarbaraCalifornia | — | $521.54 |
| Santa Rosa-PetalumaCalifornia | — | $537.09 |
| StocktonCalifornia | — | $502.16 |
| VallejoCalifornia | — | $562.58 |
| VisaliaCalifornia | — | $502.16 |
| Yuba CityCalifornia | — | $502.16 |
| Dc + Md/Va SuburbsDistrict of Columbia | — | $554.92 |
| MiamiFlorida | — | $571.74 |
| ChicagoIllinois | — | $554.24 |
| ManhattanNew York | — | $573.63 |
| Alaska*Alaska | — | $595.59 |
| AlabamaAlabama | — | $445.97 |
| ArkansasArkansas | — | $439.85 |
| ArizonaArizona | — | $481.51 |
| ColoradoColorado | — | $503.95 |
| ConnecticutConnecticut | — | $527.41 |
| DelawareDelaware | — | $489.06 |
| Fort LauderdaleFlorida | — | $533.59 |
| Rest Of FloridaFlorida | — | $506.43 |
| AtlantaGeorgia | — | $508.59 |
| Rest Of GeorgiaGeorgia | — | $477.30 |
| Hawaii, GuamHawaii | — | $510.51 |
| IowaIowa | — | $448.40 |
| IdahoIdaho | — | $452.92 |
| East St. LouisIllinois | — | $519.83 |
| Rest Of IllinoisIllinois | — | $498.54 |
| Suburban ChicagoIllinois | — | $536.90 |
| IndianaIndiana | — | $455.19 |
| KansasKansas | — | $450.36 |
| KentuckyKentucky | — | $464.54 |
| New OrleansLouisiana | — | $486.84 |
| Rest Of LouisianaLouisiana | — | $465.43 |
| Metropolitan BostonMassachusetts | — | $546.44 |
| Rest Of MassachusettsMassachusetts | — | $502.79 |
| Baltimore/Surr. CntysMaryland | — | $526.77 |
| Rest Of MarylandMaryland | — | $496.78 |
| Rest Of MaineMaine | — | $459.39 |
| Southern MaineMaine | — | $477.12 |
| DetroitMichigan | — | $516.58 |
| Rest Of MichiganMichigan | — | $479.69 |
| MinnesotaMinnesota | — | $471.85 |
| Metropolitan Kansas CityMissouri | — | $479.44 |
| Metropolitan St. LouisMissouri | — | $483.70 |
| Rest Of MissouriMissouri | — | $460.51 |
| MississippiMississippi | — | $450.06 |
| Montana**Montana | — | $495.25 |
| North CarolinaNorth Carolina | — | $463.30 |
| North Dakota**North Dakota | — | $469.54 |
| NebraskaNebraska | — | $449.53 |
| New HampshireNew Hampshire | — | $499.92 |
| Northern NjNew Jersey | — | $550.44 |
| Rest Of New JerseyNew Jersey | — | $530.32 |
| New MexicoNew Mexico | — | $483.80 |
| Nevada**Nevada | — | $488.33 |
| Nyc Suburbs/Long IslandNew York | — | $591.99 |
| Poughkpsie/N Nyc SuburbsNew York | — | $537.00 |
| QueensNew York | — | $572.26 |
| Rest Of New YorkNew York | — | $470.23 |
| OhioOhio | — | $474.44 |
| OklahomaOklahoma | — | $459.53 |
| PortlandOregon | — | $514.65 |
| Rest Of OregonOregon | — | $481.46 |
| Metropolitan PhiladelphiaPennsylvania | — | $517.47 |
| Rest Of PennsylvaniaPennsylvania | — | $472.93 |
| Puerto RicoPuerto Rico | — | $497.37 |
| Rhode IslandRhode Island | — | $502.65 |
| South CarolinaSouth Carolina | — | $470.27 |
| South Dakota**South Dakota | — | $466.50 |
| TennesseeTennessee | — | $453.01 |
| AustinTexas | — | $504.96 |
| BeaumontTexas | — | $470.28 |
| BrazoriaTexas | — | $485.25 |
| DallasTexas | — | $490.06 |
| Fort WorthTexas | — | $488.19 |
| GalvestonTexas | — | $487.82 |
| HoustonTexas | — | $511.61 |
| Rest Of TexasTexas | — | $478.67 |
| UtahUtah | — | $476.26 |
| VirginiaVirginia | — | $478.42 |
| Virgin IslandsUnited States Virgin Islands | — | $497.37 |
| VermontVermont | — | $471.44 |
| Rest Of WashingtonWashington | — | $500.60 |
| Seattle (King Cnty)Washington | — | $553.20 |
| WisconsinWisconsin | — | $455.03 |
| West VirginiaWest Virginia | — | $482.06 |
| Wyoming**Wyoming | — | $484.05 |
23935 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | No published base rate | 1 |
| AL | No published base rate | 1 |
| AR | No published base rate | 1 |
| AZ | No published base rate | 1 |
| CA | No published base rate | 29 |
| CO | No published base rate | 1 |
| CT | No published base rate | 1 |
| DC | No published base rate | 1 |
| DE | No published base rate | 1 |
| FL | No published base rate | 3 |
| GA | No published base rate | 2 |
| GU | No published base rate | 1 |
| HI | No published base rate | 1 |
| IA | No published base rate | 1 |
| ID | No published base rate | 1 |
| IL | No published base rate | 4 |
| IN | No published base rate | 1 |
| KS | No published base rate | 1 |
| KY | No published base rate | 1 |
| LA | No published base rate | 2 |
| MA | No published base rate | 2 |
| MD | No published base rate | 3 |
| ME | No published base rate | 2 |
| MI | No published base rate | 2 |
| MN | No published base rate | 1 |
| MO | No published base rate | 3 |
| MS | No published base rate | 1 |
| MT | No published base rate | 1 |
| NC | No published base rate | 1 |
| ND | No published base rate | 1 |
| NE | No published base rate | 1 |
| NH | No published base rate | 1 |
| NJ | No published base rate | 2 |
| NM | No published base rate | 1 |
| NV | No published base rate | 1 |
| NY | No published base rate | 5 |
| OH | No published base rate | 1 |
| OK | No published base rate | 1 |
| OR | No published base rate | 2 |
| PA | No published base rate | 2 |
| PR | No published base rate | 1 |
| RI | No published base rate | 1 |
| SC | No published base rate | 1 |
| SD | No published base rate | 1 |
| TN | No published base rate | 1 |
| TX | No published base rate | 8 |
| UT | No published base rate | 1 |
| VA | No published base rate | 2 |
| VI | No published base rate | 1 |
| VT | No published base rate | 1 |
| WA | No published base rate | 2 |
| WI | No published base rate | 1 |
| WV | No published base rate | 1 |
| WY | No published base rate | 1 |
How the 23935 rate is calculated
Each of 23935’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 · 23935
RVUs × geographic indexes × conversion factor
Work6.22
6.22 RVUs× 1.000 GPCI
Practice expense7.31
7.31 RVUs× 1.000 GPCI
Malpractice1.30
1.30 RVUs× 1.000 GPCI
Adjusted RVUs
14.8300
Conversion factor
$33.4009
Medicare rate
$495.34
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Redding inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
2,255
- Code
- 23935
- Physician work
- 6.22
- Practice expense
- 7.31
- Malpractice
- 1.30
GPCI2026.csv
19
- Locality
- Redding
- Physician work
- 1.017
- Practice expense
- 1.096
- Malpractice
- 0.536
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 6.22 | × 1.017 | 6.3257 |
| Practice expense | 7.31 | × 1.096 | 8.0118 |
| Malpractice | 1.30 | × 0.536 | 0.6968 |
| Total RVUs | 15.0343 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Redding$502.16
Facility: (6.22 × 1.017 + 7.31 × 1.096 + 1.3 × 0.536) × $33.4009 = $502.16
Payment rules and modifiers for 23935
23935 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 23935
Bone drainage
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| 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) | 0.10/0.69/0.21 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 23935
Bone drainage
90-day global period ends
Dec 30, 2026
Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).
Visit on Oct 31, 2026
Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
23935 without 50 · national facility
$495.34
Bone drainage
23935-50 · Bilateral: 150%
$743.01
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).
How 23935 has changed in Redding
23935 · Office / nonfacility
Rate unavailable
Effective 2026-10-01
A rate is unavailable in one of these releases, so a change cannot be calculated.
One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.
What changed, release by release
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | Not available in this setting | $502.16 | RVU26D |
| 2026-07-01 | Not available in this setting | $502.16 | RVU26C |
| 2026-04-01 | Not available in this setting | $502.16 | RVU26B |
| 2026-01-01 | Not available in this setting | $502.16 | RVU26A |
| 2025-10-01 | Not available in this setting | $522.88 | RVU25D |
| 2025-07-01 | Not available in this setting | $522.88 | RVU25C |
| 2025-04-01 | Not available in this setting | $522.88 | RVU25B |
| 2025-01-01 | Not available in this setting | $522.88 | RVU25A |
| 2024-10-01 | Not available in this setting | $533.36 | RVU24D |
| 2022-07-01 | Not available in this setting | $531.94 | RVU22C |
| 2021-04-01 | Not available in this setting | $534.28 | RVU21B |
| 2021-01-01 | Not available in this setting | $534.28 | RVU21A |
| 2020-10-01 | Not available in this setting | $536.68 | RVU20D |
| 2020-07-01 | Not available in this setting | $536.68 | RVU20C |
| 2020-04-01 | Not available in this setting | $536.68 | RVU20B |
| 2020-01-01 | Not available in this setting | $536.68 | RVU20A |
| 2019-10-01 | Not available in this setting | $530.38 | RVU19D |
| 2019-07-01 | Not available in this setting | $530.38 | RVU19C |
| 2019-04-01 | Not available in this setting | $530.38 | RVU19B |
| 2019-01-01 | Not available in this setting | $530.38 | RVU19A |
| 2018-10-01 | Not available in this setting | $526.49 | RVU18D |
| 2018-07-01 | Not available in this setting | $526.49 | RVU18C |
| 2018-04-01 | Not available in this setting | $526.49 | RVU18B |
| 2018-01-01 | Not available in this setting | $526.49 | RVU18AR1 |
| 2017-10-01 | Not available in this setting | $528.76 | RVU17D |
| 2017-07-01 | Not available in this setting | $528.76 | RVU17C |
| 2017-04-01 | Not available in this setting | $528.76 | RVU17B |
| 2017-01-01 | Not available in this setting | $528.76 | RVU17A |
| 2016-10-01 | Not available in this setting | Rate data unavailable | RVU16D |
| 2016-07-01 | Not available in this setting | Rate data unavailable | RVU16C |
| 2016-04-01 | Not available in this setting | Rate data unavailable | RVU16B |
| 2016-01-01 | Not available in this setting | Rate data unavailable | RVU16A |
| 2015-10-01 | Not available in this setting | Rate data unavailable | RVU15D |
| 2015-07-01 | Not available in this setting | Rate data unavailable | RVU15C |
| 2015-04-01 | Not available in this setting | Rate data unavailable | RVU15B |
| 2015-01-01 | Not available in this setting | Rate data unavailable | RVU15A |
| 2014-10-01 | Not available in this setting | Rate data unavailable | RVU14D |
| 2014-07-01 | Not available in this setting | Rate data unavailable | RVU14C |
| 2014-04-01 | Not available in this setting | Rate data unavailable | RVU14B |
| 2014-01-01 | Not available in this setting | Rate data unavailable | RVU14A |
| 2013-10-01 | Not available in this setting | Rate data unavailable | RVU13D |
| 2013-07-01 | Not available in this setting | Rate data unavailable | RVU13C |
| 2013-04-01 | Not available in this setting | Rate data unavailable | RVU13B |
| 2013-01-01 | Not available in this setting | Rate data unavailable | RVU13AR |
Where the Redding rate applies
Redding is a Medicare payment area, not a city. Our Census mapping connects it to 32 cities and communities in California. Some span more than one payment area; confirm with the service ZIP.
23935 billing questions
When should I choose 23935 instead of 23930?
Use 23935 when the surgeon opens the bone cortex of the humerus or elbow to drain the deep site. Code 23930 describes deep drainage in the upper arm or elbow area without that cortical opening.
How is 23935 different from drainage of an elbow bursa?
23935 involves opening the humerus or elbow cortex. Use 23931 when the operative target is an upper-arm or elbow bursa.
What documentation supports 23935?
The operative report should identify the humerus or elbow site and describe the deep approach, cortical opening, and drainage performed.
What does the 90-day global period include?
The day-before preoperative visit and 90 days of related postoperative care are included in the global period.
Can 23935 be reported bilaterally?
For a bilateral procedure, CMS pays the service with modifier 50 at 150%.
When can an assistant surgeon be paid?
Assistant-at-surgery payment is allowed only when medical necessity is documented. CMS does not permit co-surgeons or team surgery for this code.
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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