Biofeedback and Electrical Stimulation: What They Add

Biofeedback and electrical stimulation are additions to a pelvic floor muscle training programme rather than treatments in their own right: biofeedback shows you what a muscle you cannot see is doing, and electrical stimulation applies a current to produce or assist a contraction. Neither replaces the assessment, and neither replaces the muscle work. Where the evidence has looked directly at whether adding them helps, in men after prostate surgery, the European Association of Urology’s own summary is that the evidence is conflicting, and its recommendation to offer them is rated Weak¹.

I want to be straight about why I still think the equipment is worth writing about. At my first assessment the physiotherapist put a pressure sensor in place, asked me to squeeze, and turned the screen so I could see it. The number was low. Six weeks later it was higher, and I could see that it was higher, and I have never been able to explain properly how much that mattered to someone who had spent three years being told there was nothing to measure. The sensor did not treat me. It made the treatment believable. That is a real contribution and it is a smaller one than the marketing around this equipment implies. For the treatment itself, start at pelvic floor physiotherapy.

What biofeedback actually is

It is any method of displaying the activity of a muscle back to the person contracting it, in real time. In pelvic health that usually means a pressure sensor, surface electromyography that picks up electrical activity, or ultrasound imaging that shows movement. The output can be a number, a line on a screen or a sound. None of those is a treatment: they are a way of converting an invisible action into something you can watch yourself doing.

The reason a display helps at all is measurable. In 47 women referred for urodynamic evaluation of urinary incontinence, only 23 of them, 49%, achieved an ideal contraction after brief standardised verbal instruction, and 12, or 25%, performed a technique that could potentially promote incontinence². The counterweight belongs in the same breath: among 779 women attending community primary care practices, between 68.6% and 85.8% contracted correctly on the very first attempt depending on their symptoms, and 78% of those who got it wrong learned after brief instruction³. So the group who benefit most from being shown the movement are the people who already have symptoms, which is almost everybody reading this. What a correct contraction is in the first place is set out in how to do a pelvic floor contraction correctly.

What electrical stimulation actually is

It is a small current, applied through a probe or through surface electrodes by a clinician, that causes a contraction rather than waiting for you to produce one. It is used most often where somebody cannot yet generate a contraction they can feel or sense, on the reasoning that a muscle you cannot find voluntarily can still be made to move.

That reasoning is plausible and it is not the same thing as proof. The European Association of Urology’s summary of the evidence states that there is conflicting evidence on whether the addition of bladder training, electrostimulation or biofeedback increases the effectiveness of pelvic floor muscle training alone, and separately records that preoperative training does not confer additional benefit to men undergoing radical prostatectomy at level of evidence 1b¹. A guideline body that wanted to sell you equipment would not write either of those sentences.

What the evidence says about adding them

The only place in this site’s sources where the addition is assessed head on is men after radical prostatectomy, and the answer there is unhelpful in an honest way. A Cochrane review of 50 trials and 4,717 men found no evidence from eight trials that pelvic floor muscle training, with or without biofeedback, was better than control for men who had urinary incontinence up to 12 months after radical prostatectomy: 57% still incontinent in the intervention group against 62% in control, a risk ratio of 0.85 with a 95% confidence interval of 0.60 to 1.22, moderate quality evidence⁴.

The same review’s prevention-oriented pooling looks far better, 10% incontinent after one year against 32% in controls, a risk ratio of 0.32 with a 95% confidence interval of 0.20 to 0.51, and the review itself notes that this was not supported by pad test data⁴. When the questionnaires and the objective measurement disagree inside a single review, the reviewers’ own conclusion is the one to take: the value of the various approaches to conservative management remains uncertain and the evidence is conflicting.

Context matters for what “speed recovery” is even claiming. Most men experience transitory incontinence immediately after prostatectomy and reach complete continence within 2 to 3 months, with continence rates ranging from 68% to 97% at 12 months across studies and further improvement recorded up to 2 years⁵. Speeding up a recovery that largely happens anyway is a modest and legitimate goal. It is not a cure claim, and the EAU does not make one. The whole picture for men is in men’s pelvic health after prostate surgery.

What the evidence does not say, and what this page will not do

There is no Cochrane effect size and no guideline number for biofeedback or electrical stimulation in women among the sources this site is built on. That is a real absence and it is worth more to you than a borrowed figure.

The strongest evidence in the field is not about equipment at all. The Cochrane review of pelvic floor muscle training in women covers 31 trials and 1,817 women and compares training against no treatment, placebo, sham or another inactive control, producing cure in 56% of women with stress urinary incontinence against 6% of controls, a risk ratio of 8.38 with a 95% confidence interval of 3.68 to 19.07, graded high certainty from 4 trials and 165 women⁶. That is training versus nothing. It is not training with a machine versus training without one, and it cannot be read as either.

There is a separate Cochrane review comparing different ways of delivering training, and it was updated at the end of 2024. This site has not re-checked its current figures against the primary source, so it is not quoting them, in either direction. I would rather tell you that than repeat percentages I have not verified since the update. What the site will say, because it is in a source it has checked, is the general statement that supervised and more intensive training is more effective than unsupervised training, and that training needs proper instruction and close follow-up to be effective⁷.

The billing code that tells you something

In the United States, the only pelvic-floor-specific procedure code in the 2026 Medicare fee schedule is a biofeedback code. Code 90912 covers biofeedback training of the perineal muscles and the anorectal or urethral sphincter for the first 15 minutes, and the Medicare-approved amount, computed from the CMS RVU file released on 30 June 2026 at national non-facility rates, is $82.17 or $82.58 depending on which of this year’s two conversion factors, $33.4009 and $33.5675, applies to the practice⁸. Each additional 15 minutes under 90913 is $32.73 or $32.90.

Set that against the generic codes a physiotherapist would otherwise use: a physical therapy evaluation under 97161, 97162 or 97163 is $97.86 or $98.35, therapeutic exercise under 97110 is $29.06 per unit, neuromuscular re-education under 97112 is $32.73, and manual therapy under 97140 is $27.72⁸. Services delivered by a physical therapist assistant pay at 85% of those amounts.

Read the pattern rather than the numbers. The one code in that list that names the pelvic floor pays roughly two and a half times what a unit of therapeutic exercise pays. That is a payment system artefact, not a clinical ranking, and it is a reasonable thing for a patient to hold in mind when equipment appears in a plan of care. It is also the closest thing that exists to an official acknowledgement that pelvic floor work is a distinct activity, which cuts the other way. Both readings are fair.

What it costs a patient when it is billed

Under Medicare Part B in 2026 the annual deductible is $283, coinsurance is 20%, and there is no limit on how much Medicare pays for medically necessary outpatient therapy in a calendar year⁹. On an approved amount of roughly $82 for the first 15 minutes of biofeedback, a beneficiary’s share works out at around $17 to $20 per visit once the deductible has been met.

Outside the United States there is no equivalent transparency, because there is no equivalent code. No pelvic health item exists in the Australian Medicare Benefits Schedule at all, and the UK, Ireland and Canada publish nothing that separates an appointment with equipment from an appointment without it. Anyone quoting you a national average price for a biofeedback session is aggregating clinic price lists. The full picture across five systems is in how much does pelvic health physiotherapy cost.

What neither of them replaces

The assessment. This is the point on which the whole site turns, and equipment makes it easier to skip rather than harder. A pressure reading tells you how hard something squeezed. It does not tell you whether squeezing is the right treatment.

For an overactive, or hypertonic, pelvic floor, conventional strengthening can make symptoms worse, because the muscle is failing to switch off rather than failing to switch on. A device that rewards you for a higher number will reward exactly the wrong behaviour in that presentation. If your symptoms are pain led, or if training has been making things worse rather than better, read hypertonic pelvic floor and downtraining before you go near a machine. NICE requires that programmes be supervised by a physiotherapist or other healthcare professional with the appropriate expertise in pelvic floor muscle training, and that at least one review is offered during the programme and one at the end¹⁰. Equipment does not satisfy either requirement.

The International Continence Society publishes the standardisation documents that define the terminology clinicians use for pelvic floor muscle function, which is why two clinicians can describe the same measurement in the same words¹¹. A consumer app is under no such obligation, and the difference between a clinic display and a device you buy is covered in pelvic floor trainers and apps.

Where they sit in a programme

Underneath the muscle work, as a teaching aid at the start and a progress check later. The guideline dose in NG123 is at least 8 contractions performed 3 times per day, a recommendation carrying a [2006] tag because it was carried forward unchanged rather than re-reviewed in the 2019 update, and no equipment appears in it¹². How a real dose is built and progressed on top of that floor is in pelvic floor exercise programmes explained, and how many appointments that usually involves is in how many sessions of pelvic health physiotherapy.

If you are choosing between a service that offers equipment and one that does not, the question worth asking is not whether they have a machine. It is what they measured at the first appointment and when they will measure it again, which is what what happens at a pelvic health physio assessment is about. And if anything about your symptoms has changed in the ways set out in red flags and when to stop and get checked, no amount of equipment is the right answer to it.