Billing code 51728: Urodynamic studyMedicare rate & RVUs in Alaska
Reports complex bladder pressure testing during filling and voiding when evaluation of urinary symptoms includes a voiding pressure study.
Medicare pays $384.72 for 51728 in the office in Alaska (Alaska*). Which amount applies depends on the service address.
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 9 sections
What 51728 covers
This urodynamic test records bladder pressure as the bladder fills and during voiding, helping assess how the bladder stores and empties urine. Urologists and urogynecologists commonly order it for patients with urinary retention, incontinence, suspected outlet obstruction, or neurogenic bladder. Testing is generally performed in an office or facility with catheter-based pressure measurement and recording equipment.
Report 51728 when the completed study includes complex cystometry and voiding pressure assessment; a filling-only complex study or one that also includes a urethral pressure profile may call for a different code. The record should support the study performed and its interpretation. The global service includes the professional interpretation and technical work; modifier 26 identifies interpretation, and modifier TC identifies equipment and staff. This 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 is paid in full and others are subject to the standard 50% reduction. Bilateral adjustment is inappropriate. 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.
51728 in Alaska*
| Payment locality | Office | Facility |
|---|---|---|
| Alaska* | $384.72 | Unavailable |
How the 51728 rate is calculated
Each of 51728’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 · 51728
RVUs × geographic indexes × conversion factor
Work2.06
2.06 RVUs× 1.000 GPCI
Practice expense7.80
7.80 RVUs× 1.000 GPCI
Malpractice0.22
0.22 RVUs× 1.000 GPCI
Adjusted RVUs
10.0800
Conversion factor
$33.4009
Medicare rate
$336.68
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 51728
The CMS indicators that decide how 51728 is paid alongside other services.
CMS payment indicators · 51728
Urodynamic study
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| 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 | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
51728 without 26 · national office
$336.68
Urodynamic study
51728-26 · Professional component
$104.21
Pays only the interpretation and report.
51728 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 51726Cystometrogram
- 51726 represents complex cystometry without voiding pressure assessment. Choose 51728 when the documented test also evaluates pressure during voiding.
- 51727Urodynamic testing
- 51727 adds a urethral pressure profile to complex cystometry. 51728 instead includes voiding pressure assessment without that profile.
- 51729Urodynamic study
- 51729 includes both voiding pressure assessment and a urethral pressure profile; 51728 includes the voiding-pressure component without the profile.
- 51797Abdominal pressure test
- 51797 reports a separate intra-abdominal voiding pressure study as an add-on. It does not replace the complex cystometry and voiding pressure service reported with 51728.
51728 billing questions
When should 51728 be selected instead of 51726?
Use 51728 when the complex cystometric study includes assessment of voiding pressure. A complex filling study without that voiding-pressure component is distinguished by 51726.
How does 51728 differ from 51729?
51729 includes a urethral pressure profile in addition to complex cystometry and voiding pressure assessment. Use 51728 when the documented study includes voiding pressure but not that additional profile.
Can the professional and technical portions be billed separately?
Yes. Modifier 26 identifies the professional interpretation, and modifier TC identifies the technical portion, including equipment and staff. Without either modifier, the code represents the global service.
Can 51797 be reported with 51728?
51797 is an add-on for a separately performed intra-abdominal voiding pressure study and may be reported with 51728 when that additional study is performed and documented.
What documentation supports reporting 51728?
Document the complex cystometric testing, the voiding pressure assessment performed, and the interpretation or findings. The record should distinguish the service from filling-only cystometry and from a study that includes a urethral pressure profile.
How does the multiple-procedure reduction affect 51728?
When it is one of multiple procedures performed in the same session, the highest-valued procedure is paid in full and the other procedure or procedures are subject to the standard 50% reduction.
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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