CPT code 27418: Tubercleplasty, anterior tibial tubercle advancement2026 Medicare rate & RVUs in Washington, DC area

Reports surgical advancement of the tibial tubercle to alter patellofemoral loading, typically for selected patients with persistent pain related to patellar mechanics.

CMS RVU26DEffective Oct 1, 2026One payment locality123 Medicare services in 2024

In Washington, DC area, Medicare pays $847.31 for 27418 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$847.31Hospital or facility

Check a contract rate as a % of Medicare · 27418 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 27418 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Washington, DC area
  2. What 27418 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 27418 covers

The surgeon cuts and repositions the tibial tubercle—the bony prominence below the kneecap where the patellar tendon attaches—to shift the patella’s loading pattern. This procedure is used in selected patients with persistent patellofemoral pain or abnormal patellar mechanics; it is not simply a repair of kneecap tissue. An orthopedic surgeon typically performs it in a surgical facility, with the patellar tendon remaining attached to the moved bone segment.

Report 27418 when the operative work includes this tibial tubercle advancement, rather than a procedure directed primarily at reconstructing patellar restraints or treating a cartilage defect. The record should identify the indication, side, relevant examination or imaging findings, and the osteotomy and repositioning performed. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and other procedures at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team surgery is 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 Washington, DC area compares for 27418

Across 109 of 109 payment localities, the facility rate for 27418 runs from $682.90 in Arkansas to $938.35 in Alaska. Washington, DC area pays $847.31. The RVUs are the same everywhere; the geographic indexes change the dollars.

27418 in Washington, DC area vs other payment areas
  1. Washington, DC area · this page$847.31
  2. Los Angeles, CA · California$810.06−$37.25
  3. Miami, FL · Florida$891.34+$44.03
  4. Chicago, IL · Illinois$865.16+$17.85
  5. Manhattan, NY · New York$881.84+$34.53
  6. Alaska · Alaska$938.35+$91.04
  7. Alabama · Alabama$691.70−$155.61

Other areas in District of Columbia first, then benchmark localities. Bars start at $0.

Every other payment area

27418 in every other Medicare payment locality
Payment localityOfficeFacility
ArkansasArkansas—$682.90
ArizonaArizona—$742.73
Bakersfield, CACalifornia—$770.63
Chico, CACalifornia—$764.36
El Centro, CACalifornia—$764.74
Fresno, CACalifornia—$764.36
Hanford, CACalifornia—$764.36
Madera, CACalifornia—$764.36

27418 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

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27418 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

See 27418 in every payment locality

How the 27418 rate is calculated

Each of 27418’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 · 27418

RVUs × geographic indexes × conversion factor

Office or facility?

Work11.31

11.31 RVUs× 1.000 GPCI

Practice expense9.28

9.28 RVUs× 1.000 GPCI

Malpractice2.26

2.26 RVUs× 1.000 GPCI

Adjusted RVUs

22.8500

Conversion factor

$33.4009

Medicare rate

$763.21

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Washington, DC area inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

2,882

Code
27418
Physician work
11.31
Practice expense
9.28
Malpractice
2.26

GPCI2026.csv

39

Locality
Washington, DC area
Physician work
1.054
Practice expense
1.178
Malpractice
1.113
Facility calculation for 27418 in Washington, DC area
ComponentRVULocality factorAdjusted
Physician work11.31× 1.05411.9207
Practice expense9.28× 1.17810.9318
Malpractice2.26× 1.1132.5154
Total RVUs25.3680
Conversion factor× 33.4009

Facility rate, Washington, DC area$847.31

Facility: (11.31 × 1.054 + 9.28 × 1.178 + 2.26 × 1.113) × $33.4009 = $847.31

Open 27418 in the RVU calculator

Payment rules and modifiers for 27418

27418 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 27418

Tubercleplasty, anterior tibial tubercle advancement

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.69/0.21Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 27418

Tubercleplasty, anterior tibial tubercle advancement

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.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

27418 without 50 · national facility

$763.21

Tubercleplasty, anterior tibial tubercle advancement

27418-50 · Bilateral: 150%

$1,144.82

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).

When to use modifier 50

How 27418 has changed in Washington, DC area

27418 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

Base rate by release · bars start at $0 · select a bar to compare

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
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$847.31RVU26D
2026-07-01Not available in this setting$847.31RVU26C
2026-04-01Not available in this setting$847.31RVU26B
2026-01-01Not available in this setting$847.31RVU26A
2025-10-01Not available in this setting$910.85RVU25D
2025-07-01Not available in this setting$910.85RVU25C
2025-04-01Not available in this setting$910.85RVU25B
2025-01-01Not available in this setting$910.85RVU25A
2024-10-01Not available in this setting$935.32RVU24D
2024-07-01Not available in this setting$935.32RVU24C
2024-04-01Not available in this setting$935.32RVU24B
2024-03-09Not available in this setting$935.32RVU24AR
2024-01-01Not available in this setting$920.05RVU24A
2023-10-01Not available in this setting$966.43RVU23D
2023-07-01Not available in this setting$966.43RVU23C
2023-04-01Not available in this setting$966.43RVU23B
2023-01-01Not available in this setting$966.43RVU23A
2022-10-01Not available in this setting$989.79RVU22D
2022-07-01Not available in this setting$989.79RVU22C
2022-04-01Not available in this setting$989.79RVU22B
2022-01-01Not available in this setting$989.79RVU22A
2021-10-01Not available in this setting$990.05RVU21D
2021-07-01Not available in this setting$990.05RVU21C
2021-04-01Not available in this setting$990.05RVU21B
2021-01-01Not available in this setting$990.05RVU21A
2020-10-01Not available in this setting$986.46RVU20D
2020-07-01Not available in this setting$986.46RVU20C
2020-04-01Not available in this setting$986.46RVU20B
2020-01-01Not available in this setting$986.46RVU20A
2019-10-01Not available in this setting$973.41RVU19D
2019-07-01Not available in this setting$973.41RVU19C
2019-04-01Not available in this setting$973.41RVU19B
2019-01-01Not available in this setting$973.41RVU19A
2018-10-01Not available in this setting$967.04RVU18D
2018-07-01Not available in this setting$967.04RVU18C
2018-04-01Not available in this setting$967.04RVU18B
2018-01-01Not available in this setting$967.04RVU18AR1
2017-10-01Not available in this setting$963.96RVU17D
2017-07-01Not available in this setting$963.96RVU17C
2017-04-01Not available in this setting$963.96RVU17B
2017-01-01Not available in this setting$963.96RVU17A
2016-10-01Not available in this setting$969.83RVU16D
2016-07-01Not available in this setting$969.83RVU16C
2016-04-01Not available in this setting$969.83RVU16B
2016-01-01Not available in this setting$969.83RVU16A
2015-10-01Not available in this setting$972.92RVU15D
2015-07-01Not available in this setting$972.92RVU15C
2015-04-01Not available in this setting$968.08RVU15B
2015-01-01Not available in this setting$968.08RVU15A
2014-10-01Not available in this setting$957.57RVU14D
2014-07-01Not available in this setting$957.57RVU14C
2014-04-01Not available in this setting$957.57RVU14B
2014-01-01Not available in this setting$957.57RVU14A
2013-10-01Not available in this setting$943.54RVU13D
2013-07-01Not available in this setting$943.54RVU13C
2013-04-01Not available in this setting$943.54RVU13B
2013-01-01Not available in this setting$943.54RVU13AR

Price 27418 for an earlier date of service

Where the Washington, DC area rate applies

Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.

  • Washington

Browse all communities in District of Columbia

27418 billing questions

How does 27418 differ from 27422?

27418 describes advancement of the tibial tubercle to change patellofemoral loading. Use 27422 when the operation is a patellar-dislocation reconstruction involving extensor realignment or muscle advancement.

What documentation supports 27418?

Document the patellofemoral indication, the operative side, relevant clinical or imaging findings, and the tibial tubercle osteotomy and repositioning performed.

Does the 90-day global include routine postoperative care?

Yes. The global period includes the day-before preoperative visit and 90 days of related postoperative care.

How is bilateral 27418 reported?

CMS lists this as a bilateral procedure; reporting modifier 50 is paid at 150%.

Can an assistant or co-surgeon be paid?

Assistant-at-surgery payment may be available. Co-surgeon payment requires supporting documentation; team surgery is not permitted.

What happens when another procedure is performed in the same session?

Under the standard multiple-procedure rule, 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 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
RVUs for 27418PPRRVU2026_Oct_nonQPP.csv, line 2,882 (RVU26D)
Geographic factors for Washington, DC areaGPCI2026.csv, line 39 (RVU26D)

Open CMS sourceHow we calculate rates

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