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    v1.0.30
    OpenPayerBilling CodesUrodynamic Procedures on the BladderCPT cpt-51729-complex-cystometrogram-voiding-urethral-pressure-profile
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    CPT 51729: Complex Cystometrogram with Voiding and Urethral Pressure Studies

    Medicare pays $245 on average nationally for this procedure.

    CPT code 51729 describes a complex cystometrogram with voiding pressure studies and urethral pressure profile studies used to evaluate urinary dysfunction such as overactive bladder, stress urinary incontinence, or suspected outlet obstruction; the service is a specialized urodynamic diagnostic procedure typically performed in an outpatient urology clinic, hospital outpatient department, or specialized pelvic floor testing lab and involves catheter-based pressure measurements during bladder filling and voiding to assess bladder compliance, detrusor activity, and urethral function.

    For related coverage guidance, see recent payer policy updates: Clinical Review Criteria Intraoperative Neurophysiological Monitoring (IONM), Remote Electrical Neuromodulation for Migraines (i.e., Nerivio®), Lumbar Microdiscectomy.

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    Clinical & Coding Specifications

    Clinical Context

    A 62-year-old female presents to a urology clinic with progressive urinary urgency, frequency, nocturia, and episodes of stress urinary incontinence following pelvic surgery. Conservative treatments including pelvic floor physical therapy, bladder training, and anticholinergic medication produced incomplete symptom relief. The treating urologist schedules a complex urodynamic evaluation to determine bladder storage and voiding function, quantify detrusor overactivity, measure bladder compliance, evaluate urethral sphincter function, and assess for outlet obstruction.

    The clinical workflow begins with pre-procedure counseling and medication review. On the day of testing, the patient voids, then a sterile transurethral catheter and an intrarectal or vaginal pressure transducer are placed. The provider performs a multichannel complex cystometrogram with filling at physiologic rates while recording bladder sensation, compliance, and detrusor activity. Voiding pressure studies are obtained during attempted voiding to measure detrusor pressure and flow, and a urethral pressure profile is performed to assess urethral closure pressures and maximal urethral pressure. Results are used to differentiate detrusor overactivity, intrinsic sphincter deficiency, and bladder outlet obstruction and to guide further management such as surgical planning or targeted therapies.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    51741Complex cystometrogram, w/voiding pressure studies; initiation with uroflowmetry and post-void residualOften performed in conjunction or as part of the multichannel study workflow to document baseline uroflow and residual urine before/after urodynamics.
    51784Bladder capacity study (noncomplex cystometrogram)Simpler filling studies that may be used when a limited evaluation is indicated instead of a complex study.
    51798Videourodynamic study (urodynamics with imaging)Performed when anatomic visualization during filling/voiding is needed; may be used when obstruction or fistula is suspected.
    51702Retrograde urethral pressure measurement (simple urethral pressure profile)A related test that evaluates urethral closure pressures; components overlap with the urethral pressure profile portion of the complex study.
    51701Cystometrogram, simple (noncomplex)Simpler alternative when full multichannel evaluation is not required; contrast with comprehensive 51729.

    Related Modifiers

    8 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    208800000X
    207L00000X
    261Q00000X
    363LA2200X
    246ZX2200X
    364SI0800X
    314000000X
    363LX0001X

    Related ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    F52.21Male erectile disorder
    N11.9Chronic tubulo-interstitial nephritis, unspecified
    N13.6Pyonephrosis
    N13.8Other obstructive and reflux uropathy
    N20.0Calculus of kidney
    N30.00Acute cystitis without hematuria
    N30.01Acute cystitis with hematuria
    N30.10Interstitial cystitis (chronic) without hematuria
    N30.11Interstitial cystitis (chronic) with hematuria
    N31.0Uninhibited neuropathic bladder, not elsewhere classified

    Showing 1–10 of 24

    Related Payer Policy Updates

    Specialty: Neurology/Neurosurgery1 / 3

    10 rows

    PolicyPayerEffective Date
    Clinical Review Criteria Intraoperative Neurophysiological Monitoring (IONM)Kaiser Permanente2027-01-01
    Remote Electrical Neuromodulation for Migraines (i.e., Nerivio®)bcbsvermont2026-11-01
    Lumbar Microdiscectomyuniverahealthcare2026-10-15
    Artificial Cervical Intervertebral Discuniverahealthcare2026-10-15
    Lumbar Decompressionuniverahealthcare2026-10-15
    Responsive Neurostimulation for Focal EpilepsyPremera Bluecross2026-10-14
    Intraoperative MonitoringProvidence Health Plan2026-10-01
    Intraoperative MonitoringProvidence Health Plan2026-10-01
    High-Intensity Focused UltrasoundMass General Brigham Health Plan2026-10-01
    Vagal Nerve StimulationAmbetter Nevada2026-10-01

    Related Codes

    CPT-51725-CYSTOMETROGRAM-BLADDER-PRESSURE-CAPACITY-TEST

    CPT 51725: Cystometry to Measure Bladder Capacity and Pressure

    CPT-51726-CYSTOMETRY-BLADDER-PRESSURE-TESTING

    CPT 51726: Cystometry to Measure Bladder Capacity and Pressure

    CPT-51727-COMPLEX-CYSTOMETROGRAM-URETHRAL-PRESSURE-PROFILE

    CPT 51727: Complex Cystometrogram with Urethral Pressure Profile

    CPT-51728-COMPLEX-CYSTOMETROGRAM-VOIDING-PRESSURE-STUDIES

    CPT 51728: Complex Cystometrogram with Voiding Pressure Studies

    CPT-51736-UROFLOWMETRY-URODYNAMIC-FLOW-STUDY

    CPT 51736: Uroflowmetry (Urine Flow Measurement)

    CPT-51741-UROFLOWMETRY-URINARY-FLOW-MEASUREMENT

    CPT 51741: Uroflowmetry (Urine Flow Rate)

    CPT-51784-ANAL-OR-URETHRAL-SPHINCTER-ELECTRICAL-ACTIVITY-TESTING

    CPT 51784: EMG of Anal or Urethral Sphincter Muscles

    CPT-51785-ANAL-URETHRAL-SPHINCTER-ELECTROMYOGRAPHY

    CPT 51785: Anal or Urethral Sphincter Electromyography

    CPT-51792-SPHINCTER-ELECTROMYOGRAPHY-ANAL-URETHRAL

    CPT 51792: Anal or Urethral Sphincter Electromyography

    CPT-51797-VOIDING-PRESSURE-URODYNAMIC-TEST

    CPT 51797: Voiding Pressure (Leak Point Pressure) Study

    Showing 1–10 of 11

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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