CPT code 73564: Knee X-ray, four or more views, one knee2026 Medicare rate & RVUs in Chico, CA

Plain radiographs of one knee taken in at least four distinct views, reported for evaluation of arthritis, injury, patellar concerns, or knee replacement position.

CMS RVU26DEffective Oct 1, 2026One payment locality1.8M Medicare services in 2024

In Chico, CA, Medicare pays $53.25 for 73564 in the office.

$53.25Office (non-facility)
Not available in this settingHospital or facility
+7.7%vs the national office rate ($49.43)

Check a contract rate as a % of Medicare · 73564 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 73564 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Chico, CA
  2. What 73564 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 73564 covers

This study obtains four or more distinct radiographic views of one knee. A series may combine AP and lateral views with oblique, tangential patellar, tunnel, or standing weight-bearing views. Orthopedic, sports medicine, and primary care clinicians order these images to evaluate osteoarthritis, fractures, patellar alignment, or knee replacement position. Technologists acquire the images in physician offices, imaging centers, and hospital outpatient departments; a radiologist or treating physician interprets them.

Select the code by counting distinct views obtained of each knee. The imaging record should identify the views or their number; a label such as “complete knee” alone does not establish the count. One or two views are reported with 73560, and three with 73562. Modifier 26 identifies the separately billed interpretation and report, while modifier TC identifies the separately billed imaging equipment, staff, and supplies. Billing without either modifier represents the global service. When four or more views are obtained of both knees, count and report each knee separately; CMS pays each side at 100% when performed bilaterally.

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 Chico, CA compares for 73564

Across 109 of 109 payment localities, the office rate for 73564 runs from $43.22 in Arkansas to $68.35 in San Benito County, CA. Chico, CA pays $53.25. The RVUs are the same everywhere; the geographic indexes change the dollars.

73564 in Chico, CA vs other payment areas
  1. Chico, CA · this page$53.25
  2. Bakersfield, CA · California$53.31+$0.06
  3. El Centro, CA · California$53.25
  4. Fresno, CA · California$53.25
  5. Hanford, CA · California$53.25
  6. Los Angeles, CA · California$57.14+$3.89
  7. Madera, CA · California$53.25

Other areas in California first, then benchmark localities. Bars start at $0.

Every other payment area

73564 in every other Medicare payment locality
Payment localityOfficeFacility
Merced, CACalifornia$53.25—
Modesto, CACalifornia$53.25—
Napa, CACalifornia$62.82—
Oxnard, CACalifornia$56.98—
Redding, CACalifornia$53.25—
Rest of CaliforniaCalifornia$53.25—
Riverside, CACalifornia$53.47—
Sacramento, CACalifornia$56.18—

73564 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.

$43.22

$60.80

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
73564 office rate range by state
State / territoryOffice rate rangeLocalities
AK$55.351
AL$43.921
AR$43.221
AZ$48.041
CA$53.25–$68.3529
CO$52.041
CT$52.931
DC$57.321
DE$48.901
FL$47.93–$52.173
GA$45.05–$50.262
GU$54.871
HI$54.871
IA$45.481
ID$45.741
IL$46.18–$51.134
IN$46.041
KS$45.091
KY$44.741
LA$44.60–$47.062
MA$51.62–$57.752
MD$49.95–$57.323
ME$45.84–$48.812
MI$45.89–$48.432
MN$50.171
MO$43.65–$47.433
MS$43.461
MT$49.431
NC$46.391
ND$49.041
NE$45.801
NH$51.061
NJ$53.62–$56.602
NM$46.101
NV$49.361
NY$47.15–$58.355
OH$45.811
OK$44.821
OR$49.07–$54.012
PA$45.97–$51.402
PR$49.881
RI$50.871
SC$46.161
SD$48.991
TN$45.321
TX$45.63–$51.798
UT$46.861
VA$48.53–$57.322
VI$49.881
VT$48.691
WA$51.58–$59.142
WI$47.221
WV$44.251
WY$49.261

See 73564 in every payment locality

How the 73564 rate is calculated

Each of 73564’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 · 73564

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.21

0.21 RVUs× 1.000 GPCI

Practice expense1.25

1.25 RVUs× 1.000 GPCI

Malpractice0.02

0.02 RVUs× 1.000 GPCI

Adjusted RVUs

1.4800

Conversion factor

$33.4009

Medicare rate

$49.43

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

The exact Chico, CA inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

8,219

Code
73564
Physician work
0.21
Practice expense
1.25
Malpractice
0.02

GPCI2026.csv

9

Locality
Chico, CA
Physician work
1.017
Practice expense
1.096
Malpractice
0.536
Office calculation for 73564 in Chico, CA
ComponentRVULocality factorAdjusted
Physician work0.21× 1.0170.2136
Practice expense1.25× 1.0961.3700
Malpractice0.02× 0.5360.0107
Total RVUs1.5943
Conversion factor× 33.4009

Office rate, Chico, CA$53.25

Office: (0.21 × 1.017 + 1.25 × 1.096 + 0.02 × 0.536) × $33.4009 = $53.25

Open 73564 in the RVU calculator

Payment rules and modifiers for 73564

The CMS indicators that decide how 73564 is paid alongside other services.

CMS payment indicators · 73564

Knee X-ray, four or more views, one knee

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)3Each side paid at 100% (no 150% cap).
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical1Diagnostic test with separate professional (26) and technical (TC) components.

What modifiers do to the payment

Modifier 26 · payment effect

With and without the modifier

73564 without 26 · national office

$49.43

Knee X-ray, four or more views, one knee

73564-26 · Professional component

$11.02

Pays only the interpretation and report.

When to use modifier 26

How 73564 has changed in Chico, CA

73564 · Office / nonfacility

$53.25

Effective 2026-10-01

The base rate is $3.95 higher than on 2025-10-01, moving from $49.30 to $53.25 (8.0%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

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
  1. January 1, 2026

    RVU26A

    $49.30changed to$53.25

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.22 changed to 0.21
    • Practice expense RVU 1.18 changed to 1.25
    • Work GPCI 1.014 changed to 1.017
    • Practice expense GPCI 1.093 changed to 1.096
    • Malpractice GPCI 0.560 changed to 0.536

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $50.73changed to$49.30

    • Conversion factor 33.2875 changed to 32.3465

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $49.90changed to$50.73

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $50.42changed to$49.90

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 1.16 changed to 1.18
    • Work GPCI 1.021 changed to 1.014
    • Practice expense GPCI 1.079 changed to 1.093
    • Malpractice GPCI 0.579 changed to 0.560
  5. January 1, 2023

    RVU23A

    $50.25changed to$50.42

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 1.14 changed to 1.16
    • Work GPCI 1.027 changed to 1.021
    • Practice expense GPCI 1.065 changed to 1.079
    • Malpractice GPCI 0.597 changed to 0.579

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $49.18changed to$50.25

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 1.10 changed to 1.14

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $46.78changed to$49.18

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.99 changed to 1.10
    • Work GPCI 1.024 changed to 1.027
    • Practice expense GPCI 1.070 changed to 1.065
    • Malpractice GPCI 0.580 changed to 0.597

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $44.49changed to$46.78

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 0.93 changed to 0.99
    • Work GPCI 1.020 changed to 1.024
    • Practice expense GPCI 1.074 changed to 1.070
    • Malpractice GPCI 0.562 changed to 0.580

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $42.51changed to$44.49

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.88 changed to 0.93

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $42.60changed to$42.51

    • Conversion factor 35.8887 changed to 35.9996
    • Work GPCI 1.024 changed to 1.020
    • Practice expense GPCI 1.079 changed to 1.074
    • Malpractice GPCI 0.610 changed to 0.562

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    No ratechanged to$42.60

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$53.25Not available in this settingRVU26D
2026-07-01$53.25Not available in this settingRVU26C
2026-04-01$53.25Not available in this settingRVU26B
2026-01-01$53.25Not available in this settingRVU26A
2025-10-01$49.30Not available in this settingRVU25D
2025-07-01$49.30Not available in this settingRVU25C
2025-04-01$49.30Not available in this settingRVU25B
2025-01-01$49.30Not available in this settingRVU25A
2024-10-01$50.73Not available in this settingRVU24D
2024-07-01$50.73Not available in this settingRVU24C
2024-04-01$50.73Not available in this settingRVU24B
2024-03-09$50.73Not available in this settingRVU24AR
2024-01-01$49.90Not available in this settingRVU24A
2023-10-01$50.42Not available in this settingRVU23D
2023-07-01$50.42Not available in this settingRVU23C
2023-04-01$50.42Not available in this settingRVU23B
2023-01-01$50.42Not available in this settingRVU23A
2022-10-01$50.25Not available in this settingRVU22D
2022-07-01$50.25Not available in this settingRVU22C
2022-04-01$50.25Not available in this settingRVU22B
2022-01-01$50.25Not available in this settingRVU22A
2021-10-01$49.18Not available in this settingRVU21D
2021-07-01$49.18Not available in this settingRVU21C
2021-04-01$49.18Not available in this settingRVU21B
2021-01-01$49.18Not available in this settingRVU21A
2020-10-01$46.78Not available in this settingRVU20D
2020-07-01$46.78Not available in this settingRVU20C
2020-04-01$46.78Not available in this settingRVU20B
2020-01-01$46.78Not available in this settingRVU20A
2019-10-01$44.49Not available in this settingRVU19D
2019-07-01$44.49Not available in this settingRVU19C
2019-04-01$44.49Not available in this settingRVU19B
2019-01-01$44.49Not available in this settingRVU19A
2018-10-01$42.51Not available in this settingRVU18D
2018-07-01$42.51Not available in this settingRVU18C
2018-04-01$42.51Not available in this settingRVU18B
2018-01-01$42.51Not available in this settingRVU18AR1
2017-10-01$42.60Not available in this settingRVU17D
2017-07-01$42.60Not available in this settingRVU17C
2017-04-01$42.60Not available in this settingRVU17B
2017-01-01$42.60Not available in this settingRVU17A
2016-10-01Rate data unavailableNot available in this settingRVU16D
2016-07-01Rate data unavailableNot available in this settingRVU16C
2016-04-01Rate data unavailableNot available in this settingRVU16B
2016-01-01Rate data unavailableNot available in this settingRVU16A
2015-10-01Rate data unavailableNot available in this settingRVU15D
2015-07-01Rate data unavailableNot available in this settingRVU15C
2015-04-01Rate data unavailableNot available in this settingRVU15B
2015-01-01Rate data unavailableNot available in this settingRVU15A
2014-10-01Rate data unavailableNot available in this settingRVU14D
2014-07-01Rate data unavailableNot available in this settingRVU14C
2014-04-01Rate data unavailableNot available in this settingRVU14B
2014-01-01Rate data unavailableNot available in this settingRVU14A
2013-10-01Rate data unavailableNot available in this settingRVU13D
2013-07-01Rate data unavailableNot available in this settingRVU13C
2013-04-01Rate data unavailableNot available in this settingRVU13B
2013-01-01Rate data unavailableNot available in this settingRVU13AR

Price 73564 for an earlier date of service

Where the Chico, CA rate applies

Chico, CA is a Medicare payment area, not a city. Our Census mapping connects it to 30 cities and communities in California. Some span more than one payment area; confirm with the service ZIP.

  • Chico
  • Bangor
  • Berry Creek
  • Biggs
  • Butte Creek Canyon
  • Butte Meadows
  • Butte Valley
  • Cherokee

Browse all communities in California

73564 billing questions

How are views counted to choose this code over 73562?

Count distinct projections of the same knee documented in the imaging record. Three views support 73562, and four or more support 73564; repeat images of the same projection do not add a view.

How is this reported when both knees get four or more views?

Document the view count for each knee and report the bilateral service with side-specific claim information. CMS pays each side separately at 100%.

When should modifier 26 or TC be appended?

Use 26 for a separately billed interpretation and report, such as a physician reading images acquired by a hospital outpatient department. Use TC for separately billed image acquisition; bill globally when the billing entity furnishes both components.

Is a bilateral standing AP view the same as this code?

No. Code 73565 describes standing AP imaging of both knees. Code 73564 requires at least four distinct views of each knee reported.

Can a treating orthopedist bill the interpretation?

Yes, if the orthopedist interprets the knee images and documents a report. Modifier 26 identifies that professional component when another entity furnishes the imaging.

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 73564PPRRVU2026_Oct_nonQPP.csv, line 8,219 (RVU26D)
Geographic factors for Chico, CAGPCI2026.csv, line 9 (RVU26D)

Open CMS sourceHow we calculate rates

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