How the conditions may be related
Urinary incontinence is a direct and expected complication of prostate cancer surgical and radiation treatment. Radical prostatectomy removes the prostate, disrupting the external urethral sphincter mechanism, and the neurovascular bundles controlling sphincter function. Post-prostatectomy stress urinary incontinence (leakage with physical exertion, coughing, or straining) results from impaired external sphincter function when the intrinsic sphincter mechanism provided by the prostatic urethra is removed. Radiation therapy causes radiation cystitis, bladder fibrosis, reduced bladder capacity, detrusor overactivity, and radiation-induced urethral stenosis — producing urgency urinary incontinence and/or overflow incontinence from outflow obstruction. The Prostate Cancer Outcomes Study documented clinically significant urinary incontinence in 17% of men 2 years after RP and 6% after radiation, with much higher rates of any urinary bother.
“Disability which is proximately due to or the result of a service-connected disease or injury shall be service connected.”
A disability may qualify for secondary service connection when evidence shows that an existing service-connected condition caused it or increased its severity beyond natural progression. These are the causation and aggravation paths in 38 CFR § 3.310. Having both conditions does not, by itself, establish the connection.
Look at the evidence behind the pairing
- Sanda MG et al. (2008) N Engl J Med (PCOS outcomes)
- Potosky AL et al. (2000) JNCI (incontinence after RP and radiation)
- Stanford JL et al. (2000) JAMA
- Walsh PC et al. (2000) J Urol (nerve-sparing and continence)
- Ficarra V et al. (2012) Eur Urol (urinary continence after radical prostatectomy, systematic review).
Strong, Moderate, and Emerging are research categories assigned within this library. They are not VA determinations, promises of service connection, or estimates of your approval chances. Read the supporting research and consider how it applies to your own history. Association between conditions does not, by itself, establish that one caused or aggravated the other.
Build the link to your own history
A nexus is the link between the two conditions. Relevant evidence can include medical records, a reasoned medical opinion, and, in some circumstances, lay evidence. A private nexus letter can help, but is not universally required. An opinion should explain how the evidence in your case supports causation or aggravation, rather than only naming a possible association.
VA may arrange a C&P examination or request a medical opinion when needed to decide an initial or Supplemental Claim. You can submit an opinion from a treating or independent clinician, but VA does not require everyone to purchase a private nexus letter. Its duty to assist does not guarantee a favorable opinion or a granted claim.
Pairing-specific research notes
Urology records documenting urinary incontinence type (stress, urgency, or mixed), degree of pad use per day, urodynamic study results, and treatment (pelvic floor therapy, alpha-blockers, anticholinergics, sphincter prosthesis). This is a residual of the treated malignancy. Under the Note to 38 CFR § 4.115b DC 7528, once treatment has ceased and there has been no local recurrence or metastasis, VA rates on residuals as voiding dysfunction or renal dysfunction, whichever is predominant. Do not expect a neurogenic-bladder code (DC 7542) unless a neurogenic bladder has actually been diagnosed. Rated as voiding dysfunction under 38 CFR § 4.115a, the criterion is how often absorbent materials must be changed: 20% when they must be changed less than 2 times per day, 40% when 2 to 4 times per day, and 60% when more than 4 times per day or when an appliance is required. 60% is the maximum for urine leakage under that formula, and no percentage attaches to a particular device. Verified at eCFR issue 2026-08-27. This is a direct complication requiring minimal nexus documentation beyond treatment records.
A diagnosis does not guarantee an additional rating
A separately compensable secondary disability may receive its own evaluation, which VA combines with other ratings under 38 CFR § 4.25. Separate diagnoses do not always mean separate ratings: § 4.14 prohibits compensating the same manifestations more than once, and some body systems have additional rating rules. For aggravation, the compensable increase must account for the baseline severity.
The formula applies the whole-person concept: a 50% combined existing rating plus a new 30% rating yields 65% (rounded to 70%), not 80%.
This example starts with an unrounded combined value. If your current award was already rounded, use your individual ratings to calculate the new total. VA rounds to the nearest ten only after combining all applicable ratings.
Read the combined ratings ruleBoth causation and aggravation are forms of secondary service connection. Aggravation means an increase in severity attributable to a service-connected condition, beyond natural progression. Permanent worsening is not required under Ward v. Wilkie (2019). Section 3.310(b) also requires medical evidence establishing a baseline level of severity; VA deducts the baseline and any natural progression when determining the compensable increase.
Explore your combined rating
See how separately assigned ratings combine using VA math.
Open the calculatorSecondary claims, explained
What is a secondary service-connected condition?
A disability may qualify for secondary service connection when evidence shows that an existing service-connected condition caused it or increased its severity beyond natural progression. These are the causation and aggravation paths in 38 CFR § 3.310. Having both conditions does not, by itself, establish the connection.
What evidence can establish the connection?
A nexus is the link between the two conditions. Relevant evidence can include medical records, a reasoned medical opinion, and, in some circumstances, lay evidence. A private nexus letter can help, but is not universally required. An opinion should explain how the evidence in your case supports causation or aggravation, rather than only naming a possible association.
Do I have to pay for a private nexus letter?
VA may arrange a C&P examination or request a medical opinion when needed to decide an initial or Supplemental Claim. You can submit an opinion from a treating or independent clinician, but VA does not require everyone to purchase a private nexus letter. Its duty to assist does not guarantee a favorable opinion or a granted claim.
Does aggravation have to be permanent?
Both causation and aggravation are forms of secondary service connection. Aggravation means an increase in severity attributable to a service-connected condition, beyond natural progression. Permanent worsening is not required under Ward v. Wilkie (2019). Section 3.310(b) also requires medical evidence establishing a baseline level of severity; VA deducts the baseline and any natural progression when determining the compensable increase.
Will a secondary condition get a separate rating?
A separately compensable secondary disability may receive its own evaluation, which VA combines with other ratings under 38 CFR § 4.25. Separate diagnoses do not always mean separate ratings: § 4.14 prohibits compensating the same manifestations more than once, and some body systems have additional rating rules. For aggravation, the compensable increase must account for the baseline severity.
When can a secondary claim’s effective date begin?
An effective date generally depends on when VA received the claim and when entitlement arose, with exceptions. A qualifying intent to file may preserve an earlier claim date if VA receives the completed claim within one year. Review deadlines and continuous pursuit can affect the date; a prior denial does not automatically establish an earlier effective date.