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CPT code 51600: Bladder injection, cystography or voiding study2026 Medicare rate & RVUs in Puerto Rico

Reports contrast instillation into the bladder for cystography or voiding urethrocystography, separate from the radiographic imaging service when separately coded.

CMS RVU26DEffective Oct 1, 2026One payment locality18.4K Medicare services in 2024

In Puerto Rico, Medicare pays $209.31 for 51600 in the office and $37.43 when it’s performed in a hospital or facility.

$209.31Office (non-facility)
$37.43Hospital or facility
+0.9%vs the national office rate ($207.42)

Check a contract rate as a % of Medicare · 51600 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 51600 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Puerto Rico
  2. What 51600 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 51600 covers

CPT 51600 represents placing contrast into the bladder for a cystographic examination or a study that images the bladder during voiding. The contrast is typically introduced through a urinary catheter. Radiologists and urologists commonly perform the injection in hospital imaging departments and outpatient radiology settings. The code identifies the contrast-injection service, not the resulting images or their interpretation.

Report 51600 when the clinician performs the bladder contrast injection; documentation should identify the study and confirm that contrast was instilled into the bladder. Report the applicable imaging service separately when performed and supported. The code has a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures occur in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Modifier 50 is inappropriate. Medicare does not pay for an assistant at surgery, and 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 Puerto Rico compares for 51600

Across 109 of 109 payment localities, the office rate for 51600 runs from $181.19 in Arkansas to $286.84 in San Benito County, CA. Puerto Rico pays $209.31. The RVUs are the same everywhere; the geographic indexes change the dollars.

51600 in Puerto Rico vs other payment areas
  1. Puerto Rico · this page$209.31
  2. Los Angeles, CA · California$239.74+$30.43
  3. Washington, DC area · District of Columbia$240.58+$31.27
  4. Miami, FL · Florida$219.22+$9.91
  5. Chicago, IL · Illinois$212.39+$3.08
  6. Manhattan, NY · New York$239.48+$30.17
  7. Alaska · Alaska$231.85+$22.54

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

Every other payment area

51600 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$184.15$35.39
ArkansasArkansas$181.19$35.15
ArizonaArizona$201.54$36.80
Bakersfield, CACalifornia$223.66$37.32
Chico, CACalifornia$223.38$37.05
El Centro, CACalifornia$223.39$37.06
Fresno, CACalifornia$223.38$37.05
Hanford, CACalifornia$223.38$37.05

51600 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

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.

$181.19

$255.11

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

View every state and territory as a table
51600 office rate range by state
State / territoryOffice rate rangeLocalities
AK$231.851
AL$184.151
AR$181.191
AZ$201.541
CA$223.38–$286.8429
CO$218.351
CT$222.151
DC$240.581
DE$205.151
FL$201.20–$219.223
GA$189.02–$210.922
GU$230.221
HI$230.221
IA$190.671
ID$191.781
IL$193.83–$214.684
IN$193.051
KS$189.061
KY$187.661
LA$187.09–$197.462
MA$216.58–$242.352
MD$209.57–$240.583
ME$192.23–$204.732
MI$192.52–$203.332
MN$210.401
MO$183.10–$198.993
MS$182.211
MT$207.411
NC$194.561
ND$205.631
NE$192.021
NH$214.251
NJ$225.02–$237.542
NM$193.441
NV$207.091
NY$197.74–$245.045
OH$192.161
OK$187.951
OR$205.82–$226.612
PA$192.85–$215.722
PR$209.311
RI$213.441
SC$193.621
SD$205.421
TN$190.041
TX$191.39–$217.328
UT$196.571
VA$203.55–$240.582
VI$209.311
VT$204.181
WA$216.39–$248.192
WI$197.961
WV$185.701
WY$206.641

See 51600 in every payment locality

How the 51600 rate is calculated

Each of 51600’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 · 51600

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.86

0.86 RVUs× 1.000 GPCI

Practice expense5.26

5.26 RVUs× 1.000 GPCI

Malpractice0.09

0.09 RVUs× 1.000 GPCI

Adjusted RVUs

6.2100

Conversion factor

$33.4009

Medicare rate

$207.42

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

The exact Puerto Rico inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

6,042

Code
51600
Physician work
0.86
Practice expense
5.26
Malpractice
0.09

GPCI2026.csv

91

Locality
Puerto Rico
Physician work
1.000
Practice expense
1.011
Malpractice
0.985
Office calculation for 51600 in Puerto Rico
ComponentRVULocality factorAdjusted
Physician work0.86× 1.0000.8600
Practice expense5.26× 1.0115.3179
Malpractice0.09× 0.9850.0886
Total RVUs6.2665
Conversion factor× 33.4009

Office rate, Puerto Rico$209.31

Office: (0.86 × 1 + 5.26 × 1.011 + 0.09 × 0.985) × $33.4009 = $209.31

Facility: (0.86 × 1 + 0.17 × 1.011 + 0.09 × 0.985) × $33.4009 = $37.43

Open 51600 in the RVU calculator

Payment rules and modifiers for 51600

The CMS indicators that decide how 51600 is paid alongside other services.

CMS payment indicators · 51600

Bladder injection, cystography or voiding study

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

51600 without 51 · national office

$207.42

Bladder injection, cystography or voiding study

51600-51 · Second procedure: 50%

$103.71

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

Codes related to 51600

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 51600
CodeHow it relatesOffice range, Puerto Rico
Used instead
51610Bladder injection, for x-ray imagingUsed for contrast injection in retrograde urethrocystography rather than bladder cystography.$129.19
Often billed with
74430Bladder imaging, retrograde contrastRadiographic imaging and interpretation for cystography may accompany the injection service.$42.07
74455Voiding study, urethra and bladderImaging and interpretation for a voiding urethrocystographic study may accompany the injection service.$106.56

How 51600 has changed in Puerto Rico

51600 · Office / nonfacility

$209.31

Effective 2026-10-01

The base rate is $10.23 higher than on 2025-10-01, moving from $199.08 to $209.31 (5.1%).

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

    $199.08changed to$209.31

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.88 changed to 0.86
    • Practice expense RVU 5.16 changed to 5.26
    • Malpractice RVU 0.08 changed to 0.09
    • Practice expense GPCI 1.007 changed to 1.011
    • Malpractice GPCI 0.982 changed to 0.985

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $210.56changed to$199.08

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 5.32 changed to 5.16
    • Malpractice RVU 0.09 changed to 0.08

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $207.13changed to$210.56

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $218.63changed to$207.13

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 5.43 changed to 5.32
    • Malpractice RVU 0.10 changed to 0.09
    • Practice expense GPCI 1.008 changed to 1.007
    • Malpractice GPCI 0.984 changed to 0.982

  5. October 1, 2023

    RVU23D

    $217.22changed to$218.63

    • Practice expense GPCI 1.000 changed to 1.008
    • Malpractice GPCI 1.000 changed to 0.984

  6. January 1, 2023

    RVU23A

    $227.47changed to$217.22

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 5.56 changed to 5.43
    • Malpractice RVU 0.09 changed to 0.10
    • Practice expense GPCI 1.008 changed to 1.000
    • Malpractice GPCI 0.986 changed to 1.000

    Held through RVU23B, RVU23C.

  7. January 1, 2022

    RVU22A

    $227.25changed to$227.47

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 5.50 changed to 5.56

    Held through RVU22B, RVU22C, RVU22D.

  8. January 1, 2021

    RVU21A

    $213.59changed to$227.25

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 4.91 changed to 5.50
    • Malpractice GPCI 0.988 changed to 0.986

    Held through RVU21B, RVU21C, RVU21D.

  9. January 1, 2020

    RVU20A

    $201.87changed to$213.59

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 4.60 changed to 4.91
    • Practice expense GPCI 1.007 changed to 1.008
    • Malpractice GPCI 0.990 changed to 0.988

    Held through RVU20B, RVU20C, RVU20D.

  10. January 1, 2019

    RVU19A

    $190.41changed to$201.87

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 4.29 changed to 4.60

    Held through RVU19B, RVU19C, RVU19D.

  11. January 1, 2018

    RVU18AR1

    $164.30changed to$190.41

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 4.26 changed to 4.29
    • Malpractice RVU 0.08 changed to 0.09
    • Practice expense GPCI 0.856 changed to 1.007
    • Malpractice GPCI 0.642 changed to 0.990

    Held through RVU18B, RVU18C, RVU18D.

  12. January 1, 2017

    RVU17A

    $139.48changed to$164.30

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 4.24 changed to 4.26
    • Malpractice RVU 0.09 changed to 0.08
    • Practice expense GPCI 0.705 changed to 0.856
    • Malpractice GPCI 0.293 changed to 0.642

    Held through RVU17B, RVU17C, RVU17D.

  13. January 1, 2016

    RVU16A

    $139.73changed to$139.48

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 4.23 changed to 4.24

    Held through RVU16B, RVU16C, RVU16D.

  14. July 1, 2015

    RVU15C

    $139.03changed to$139.73

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  15. January 1, 2015

    RVU15A

    $135.18changed to$139.03

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 4.15 changed to 4.23
    • Malpractice RVU 0.08 changed to 0.09
    • Practice expense GPCI 0.692 changed to 0.705
    • Malpractice GPCI 0.271 changed to 0.293

    Held through RVU15B.

  16. January 1, 2014

    RVU14A

    $133.73changed to$135.18

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 4.47 changed to 4.15
    • Practice expense GPCI 0.678 changed to 0.692
    • Malpractice GPCI 0.249 changed to 0.271

    Held through RVU14B, RVU14C, RVU14D.

  17. January 1, 2013

    RVU13AR

    Earliest loaded release: $133.73

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$209.31$37.43RVU26D
2026-07-01$209.31$37.43RVU26C
2026-04-01$209.31$37.43RVU26B
2026-01-01$209.31$37.43RVU26A
2025-10-01$199.08$41.43RVU25D
2025-07-01$199.08$41.43RVU25C
2025-04-01$199.08$41.43RVU25B
2025-01-01$199.08$41.43RVU25A
2024-10-01$210.56$42.63RVU24D
2024-07-01$210.56$42.63RVU24C
2024-04-01$210.56$42.63RVU24B
2024-03-09$210.56$42.63RVU24AR
2024-01-01$207.13$41.93RVU24A
2023-10-01$218.63$43.74RVU23D
2023-07-01$217.22$43.71RVU23C
2023-04-01$217.22$43.71RVU23B
2023-01-01$217.22$43.71RVU23A
2022-10-01$227.47$44.34RVU22D
2022-07-01$227.47$44.34RVU22C
2022-04-01$227.47$44.34RVU22B
2022-01-01$227.47$44.34RVU22A
2021-10-01$227.25$44.71RVU21D
2021-07-01$227.25$44.71RVU21C
2021-04-01$227.25$44.71RVU21B
2021-01-01$227.25$44.71RVU21A
2020-10-01$213.59$46.25RVU20D
2020-07-01$213.59$46.25RVU20C
2020-04-01$213.59$46.25RVU20B
2020-01-01$213.59$46.25RVU20A
2019-10-01$201.87$46.54RVU19D
2019-07-01$201.87$46.54RVU19C
2019-04-01$201.87$46.54RVU19B
2019-01-01$201.87$46.54RVU19A
2018-10-01$190.41$46.49RVU18D
2018-07-01$190.41$46.49RVU18C
2018-04-01$190.41$46.49RVU18B
2018-01-01$190.41$46.49RVU18AR1
2017-10-01$164.30$43.26RVU17D
2017-07-01$164.30$43.26RVU17C
2017-04-01$164.30$43.26RVU17B
2017-01-01$164.30$43.26RVU17A
2016-10-01$139.48$40.28RVU16D
2016-07-01$139.48$40.28RVU16C
2016-04-01$139.48$40.28RVU16B
2016-01-01$139.48$40.28RVU16A
2015-10-01$139.73$40.68RVU15D
2015-07-01$139.73$40.68RVU15C
2015-04-01$139.03$40.47RVU15B
2015-01-01$139.03$40.47RVU15A
2014-10-01$135.18$39.99RVU14D
2014-07-01$135.18$39.99RVU14C
2014-04-01$135.18$39.99RVU14B
2014-01-01$135.18$39.99RVU14A
2013-10-01$133.73$37.77RVU13D
2013-07-01$133.73$37.77RVU13C
2013-04-01$133.73$37.77RVU13B
2013-01-01$133.73$37.77RVU13AR

Price 51600 for an earlier date of service

Where the Puerto Rico rate applies

Puerto Rico is a Medicare payment area, not a city. Our Census mapping connects it to 292 cities and communities in Puerto Rico. Some span more than one payment area; confirm with the service ZIP.

  • Aceitunas
  • Adjuntas
  • Aguada
  • Aguadilla
  • Aguas Buenas
  • Aguas Claras
  • Aguilita
  • Aibonito

Browse all communities in Puerto Rico

51600 billing questions

How is 51600 different from 51610?

51600 is for contrast injection into the bladder for cystography or a voiding study. 51610 is for injection used in retrograde urethrocystography.

Can the imaging service be reported separately?

Yes. The injection and the radiographic imaging or interpretation are distinct services; report the applicable imaging code when that service is performed and documented.

Should modifier 50 be used for a bilateral study?

No. Bilateral adjustment does not apply to 51600, and modifier 50 is inappropriate.

What documentation supports 51600?

Document the cystographic or voiding study and that contrast was instilled into the bladder. The record should distinguish the injection from the imaging service.

How does the multiple-procedure reduction affect 51600?

For procedures performed in the same session, Medicare pays the highest-valued procedure in full and applies the standard 50% reduction to the others.

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 51600PPRRVU2026_Oct_nonQPP.csv, line 6,042 (RVU26D)
Geographic factors for Puerto RicoGPCI2026.csv, line 91 (RVU26D)

Open CMS sourceHow we calculate rates

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