$296.38–$455.99
51728 reports the complex cystometrogram with voiding pressure studies; 51797 separately identifies the intra-abdominal pressure measurement as an add-on when performed.
On this page
CMS RVU26D · Effective 2026-10-01
51797 Abdominal pressure test Medicare reimbursement rates
Measures intra-abdominal pressure during urodynamic testing, typically alongside complex cystometrogram studies that assess bladder pressure during filling and voiding. Compare 51797 office and facility rates across CMS payment localities.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 51797?
The service location and office or facility setting determine which base rate applies. These are the supported base rates for the 109 payment areas shown below, using the same CMS release.
Office / nonfacility
$136.00–$212.71
109 of 109 localities have a supported rate.
Lowest: Arkansas
Highest: San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
A spread of $76.71 per service.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Where 51797 pays more and less
109 payment localities
$136.00 to $212.71
Urodynamic testing
About 51797: Urodynamic intra-abdominal pressure measurement
Measures intra-abdominal pressure during urodynamic testing, typically alongside complex cystometrogram studies that assess bladder pressure during filling and voiding.
This add-on captures intra-abdominal pressure during urodynamic evaluation, commonly through a rectal pressure catheter or balloon while bladder pressure is recorded. Comparing abdominal and bladder pressure helps the clinician assess detrusor pressure during filling and voiding. Urologists and other clinicians who perform urodynamic studies use it in office or facility settings for patients evaluated for urinary retention, incontinence, or other lower urinary tract symptoms.
Report 51797 only with a primary procedure, commonly 51728 or 51729, when the abdominal-pressure measurement is performed; it is not a stand-alone service. The record should identify the measurement method, include the pressure data, and support its role in the study. CMS treats payment for this add-on as within the primary procedure's global period. The service may be billed globally without a modifier or split between interpretation (modifier 26) and equipment and staff (modifier TC); CMS separately prices both component modifiers.
CMS billing rules for 51797
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
Where the value comes from
- Work RVU0.78 · 17%
- Practice expense (office) RVU3.79 · 82%
- Malpractice RVU0.07 · 2%
96.4K
Medicare services in 2024 · #572 by national volume
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.
51797 compared with similar codes
Office rate ranges across all CMS payment localities, from the same CMS release.
$312.11–$473.99
51729 is the primary complex cystometrogram code when leak point pressure studies are included. 51797 reports the intra-abdominal pressure measurement alongside the primary study.
$238.60–$366.95
51726 reports a complex cystometrogram without the voiding pressure study focus of 51728. 51797 is an add-on measurement, not a substitute for the primary cystometrogram code.
See how rates vary across the country
51797 · Office / nonfacility · Non-QP. Choose a state to explore its payment localities. A range means the amount varies within that state.
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.
$136.00
$189.60
Color shows the midpoint of each state’s locality range.
View all state and territory rates as a table
| State / territory | Rate range | Localities |
|---|---|---|
| AK | $175.19 | 1 |
| AL | $138.14 | 1 |
| AR | $136.00 | 1 |
| AZ | $150.72 | 1 |
| CA | $166.49–$212.71 | 29 |
| CO | $162.88 | 1 |
| CT | $165.74 | 1 |
| DC | $179.18 | 1 |
| DE | $153.36 | 1 |
| FL | $150.59–$163.75 | 3 |
| GA | $141.76–$157.55 | 2 |
| GU | $171.34 | 1 |
| HI | $171.34 | 1 |
| IA | $142.81 | 1 |
| ID | $143.62 | 1 |
| IL | $145.28–$160.39 | 4 |
| IN | $144.54 | 1 |
| KS | $141.67 | 1 |
| KY | $140.73 | 1 |
| LA | $140.32–$147.83 | 2 |
| MA | $161.63–$180.35 | 2 |
| MD | $156.57–$179.18 | 3 |
| ME | $143.97–$152.98 | 2 |
| MI | $144.27–$152.15 | 2 |
| MN | $157.01 | 1 |
| MO | $137.45–$148.91 | 3 |
| MS | $136.77 | 1 |
| MT | $154.98 | 1 |
| NC | $145.65 | 1 |
| ND | $153.59 | 1 |
| NE | $143.78 | 1 |
| NH | $159.88 | 1 |
| NJ | $167.90–$177.03 | 2 |
| NM | $144.94 | 1 |
| NV | $154.72 | 1 |
| NY | $147.96–$182.58 | 5 |
| OH | $143.99 | 1 |
| OK | $140.91 | 1 |
| OR | $153.78–$168.85 | 2 |
| PA | $144.47–$161.09 | 2 |
| PR | $156.34 | 1 |
| RI | $159.40 | 1 |
| SC | $145.01 | 1 |
| SD | $153.43 | 1 |
| TN | $142.38 | 1 |
| TX | $143.42–$162.11 | 8 |
| UT | $147.15 | 1 |
| VA | $152.14–$179.18 | 2 |
| VI | $156.34 | 1 |
| VT | $152.56 | 1 |
| WA | $161.47–$184.59 | 2 |
| WI | $148.05 | 1 |
| WV | $139.40 | 1 |
| WY | $154.37 | 1 |
Compare 51797 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
109 of 109 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Alabama | Office $138.14 | Facility Unavailable |
| Alaska* | Office $175.19 | Facility Unavailable |
| Arizona | Office $150.72 | Facility Unavailable |
| Arkansas | Office $136.00 | Facility Unavailable |
| Atlanta | Office $157.55 | Facility Unavailable |
| Austin | Office $162.11 | Facility Unavailable |
| Bakersfield | Office $166.71 | Facility Unavailable |
| Baltimore/Surr. Cntys | Office $165.19 | Facility Unavailable |
| Beaumont | Office $143.42 | Facility Unavailable |
| Brazoria | Office $153.53 | Facility Unavailable |
| Chicago | Office $158.82 | Facility Unavailable |
| Chico | Office $166.49 | Facility Unavailable |
| Colorado | Office $162.88 | Facility Unavailable |
| Connecticut | Office $165.74 | Facility Unavailable |
| Dallas | Office $154.38 | Facility Unavailable |
| Dc + Md/Va Suburbs | Office $179.18 | Facility Unavailable |
| Delaware | Office $153.36 | Facility Unavailable |
| Detroit | Office $152.15 | Facility Unavailable |
| East St. Louis | Office $147.22 | Facility Unavailable |
| El Centro | Office $166.50 | Facility Unavailable |
| Fort Lauderdale | Office $158.51 | Facility Unavailable |
| Fort Worth | Office $153.14 | Facility Unavailable |
| Fresno | Office $166.49 | Facility Unavailable |
| Galveston | Office $153.90 | Facility Unavailable |
| Hanford-Corcoran | Office $166.49 | Facility Unavailable |
| Hawaii, Guam | Office $171.34 | Facility Unavailable |
| Houston | Office $155.18 | Facility Unavailable |
| Idaho | Office $143.62 | Facility Unavailable |
| Indiana | Office $144.54 | Facility Unavailable |
| Iowa | Office $142.81 | Facility Unavailable |
| Kansas | Office $141.67 | Facility Unavailable |
| Kentucky | Office $140.73 | Facility Unavailable |
| Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty) | Office $178.43 | Facility Unavailable |
| Madera | Office $166.49 | Facility Unavailable |
| Manhattan | Office $178.53 | Facility Unavailable |
| Merced | Office $166.49 | Facility Unavailable |
| Metropolitan Boston | Office $180.35 | Facility Unavailable |
| Metropolitan Kansas City | Office $147.20 | Facility Unavailable |
| Metropolitan Philadelphia | Office $161.09 | Facility Unavailable |
| Metropolitan St. Louis | Office $148.91 | Facility Unavailable |
| Miami | Office $163.75 | Facility Unavailable |
| Minnesota | Office $157.01 | Facility Unavailable |
| Mississippi | Office $136.77 | Facility Unavailable |
| Modesto | Office $166.49 | Facility Unavailable |
| Montana** | Office $154.98 | Facility Unavailable |
| Napa | Office $195.73 | Facility Unavailable |
| Nebraska | Office $143.78 | Facility Unavailable |
| Nevada** | Office $154.72 | Facility Unavailable |
| New Hampshire | Office $159.88 | Facility Unavailable |
| New Mexico | Office $144.94 | Facility Unavailable |
| New Orleans | Office $147.83 | Facility Unavailable |
| North Carolina | Office $145.65 | Facility Unavailable |
| North Dakota** | Office $153.59 | Facility Unavailable |
| Northern Nj | Office $177.03 | Facility Unavailable |
| Nyc Suburbs/Long Island | Office $182.58 | Facility Unavailable |
| Ohio | Office $143.99 | Facility Unavailable |
| Oklahoma | Office $140.91 | Facility Unavailable |
| Oxnard-Thousand Oaks-Ventura | Office $177.87 | Facility Unavailable |
| Portland | Office $168.85 | Facility Unavailable |
| Poughkpsie/N Nyc Suburbs | Office $168.67 | Facility Unavailable |
| Puerto Rico | Office $156.34 | Facility Unavailable |
| Queens | Office $180.72 | Facility Unavailable |
| Redding | Office $166.49 | Facility Unavailable |
| Rest Of California | Office $166.49 | Facility Unavailable |
| Rest Of Florida | Office $150.59 | Facility Unavailable |
| Rest Of Georgia | Office $141.76 | Facility Unavailable |
| Rest Of Illinois | Office $145.28 | Facility Unavailable |
| Rest Of Louisiana | Office $140.32 | Facility Unavailable |
| Rest Of Maine | Office $143.97 | Facility Unavailable |
| Rest Of Maryland | Office $156.57 | Facility Unavailable |
| Rest Of Massachusetts | Office $161.63 | Facility Unavailable |
| Rest Of Michigan | Office $144.27 | Facility Unavailable |
| Rest Of Missouri | Office $137.45 | Facility Unavailable |
| Rest Of New Jersey | Office $167.90 | Facility Unavailable |
| Rest Of New York | Office $147.96 | Facility Unavailable |
| Rest Of Oregon | Office $153.78 | Facility Unavailable |
| Rest Of Pennsylvania | Office $144.47 | Facility Unavailable |
| Rest Of Texas | Office $148.30 | Facility Unavailable |
| Rest Of Washington | Office $161.47 | Facility Unavailable |
| Rhode Island | Office $159.40 | Facility Unavailable |
| Riverside-San Bernardino-Ontario | Office $167.26 | Facility Unavailable |
| Sacramento-Roseville-Folsom | Office $175.47 | Facility Unavailable |
| Salinas | Office $174.83 | Facility Unavailable |
| San Diego-Chula Vista-Carlsbad | Office $179.50 | Facility Unavailable |
| San Francisco-Oakland-Berkeley (Marin Cnty) | Office $208.09 | Facility Unavailable |
| San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty) | Office $208.01 | Facility Unavailable |
| San Jose-Sunnyvale-Santa Clara (San Benito Cnty) | Office $212.71 | Facility Unavailable |
| San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty) | Office $212.39 | Facility Unavailable |
| San Luis Obispo-Paso Robles | Office $171.93 | Facility Unavailable |
| Santa Cruz-Watsonville | Office $181.66 | Facility Unavailable |
| Santa Maria-Santa Barbara | Office $175.64 | Facility Unavailable |
| Santa Rosa-Petaluma | Office $183.54 | Facility Unavailable |
| Seattle (King Cnty) | Office $184.59 | Facility Unavailable |
| South Carolina | Office $145.01 | Facility Unavailable |
| South Dakota** | Office $153.43 | Facility Unavailable |
| Southern Maine | Office $152.98 | Facility Unavailable |
| Stockton | Office $166.49 | Facility Unavailable |
| Suburban Chicago | Office $160.39 | Facility Unavailable |
| Tennessee | Office $142.38 | Facility Unavailable |
| Utah | Office $147.15 | Facility Unavailable |
| Vallejo | Office $195.61 | Facility Unavailable |
| Vermont | Office $152.56 | Facility Unavailable |
| Virgin Islands | Office $156.34 | Facility Unavailable |
| Virginia | Office $152.14 | Facility Unavailable |
| Visalia | Office $166.49 | Facility Unavailable |
| West Virginia | Office $139.40 | Facility Unavailable |
| Wisconsin | Office $148.05 | Facility Unavailable |
| Wyoming** | Office $154.37 | Facility Unavailable |
| Yuba City | Office $166.49 | Facility Unavailable |
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51797 billing questions
Can 51797 be billed by itself?
No. It is an add-on and must be reported with a primary procedure, commonly 51728 or 51729, when intra-abdominal pressure is measured.
How does 51797 differ from 51728?
51728 reports a complex cystometrogram with voiding pressure studies. 51797 is the add-on for the intra-abdominal pressure measurement performed as part of the study.
What documentation supports 51797?
Document the pressure-measurement method, the recorded abdominal-pressure data, and how the measurement relates to the urodynamic study.
Can the professional and technical portions be billed separately?
Yes. Modifier 26 identifies the interpretation, and modifier TC identifies the equipment and staff portion. Billing without a modifier represents the global service.
Which primary procedures are commonly paired with 51797?
It is commonly reported with 51728 or 51729 when the study includes intra-abdominal pressure measurement. Select the primary procedure based on the urodynamic services performed.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
6,08151792,,Urinary reflex study,A,,1.07,6.14,,6.14,NA,0.19,7.40,7.40,1,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,08251792,26,Urinary reflex study,A,,1.07,0.45,,0.45,,0.16,1.68,1.68,1,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,08351792,TC,Urinary reflex study,A,,0.00,5.69,,5.69,NA,0.03,5.72,5.72,1,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,02,0,99,0.00,0.00,0.00
6,08451797,,Intraabdominal pressure test,A,,0.78,3.79,,3.79,NA,0.07,4.64,4.64,1,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,08551797,26,Intraabdominal pressure test,A,,0.78,0.33,,0.33,,0.07,1.18,1.18,1,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,08651797,TC,Intraabdominal pressure test,A,,0.00,3.46,,3.46,NA,0.00,3.46,3.46,1,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,02,0,99,0.00,0.00,0.00
6,08751798,,Us urine capacity measure,A,,0.00,0.36,,0.36,NA,0.02,0.38,0.38,3,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00