Hydronephrosis — VA Disability Rating (DC 7509)
Diagnostic Code 7509 · 38 CFR §4.115b
What Is It?
Hydronephrosis is swelling of the kidney caused by urine backing up when it cannot drain properly. This can result from kidney stones, ureter strictures, tumors, or other obstructions. If not relieved, the pressure damages kidney tissue. Veterans may develop hydronephrosis from service-connected kidney stones, urinary tract injuries, or as a complication of pelvic or abdominal injuries during service.
Rating Criteria
| Rating | Criteria |
|---|---|
| 30% | Frequent attacks of colic with infection (pyonephrosis) and kidney function impaired. Severe hydronephrosis is rated as renal dysfunction, which can provide evaluations up to 100%. |
| 20% | Frequent attacks of colic requiring catheter drainage. |
| 10% | Only an occasional attack of colic, not infected and not requiring catheter drainage. |
Evidence Needed
Imaging showing the dilated kidney collecting system is essential. Records of the cause of the obstruction help establish the chain of events. Treatment records including stent placements, nephrostomy tubes, or surgical interventions demonstrate severity. Kidney function tests showing damage from the obstruction support higher ratings.
C&P Exam Tips
Describe the frequency and severity of episodes. Report any procedures needed to relieve the obstruction. Bring imaging showing the hydronephrosis. If the condition has damaged your kidney, bring function test results. Explain what causes the obstruction and whether it is likely to recur.
How to File
File VA Form 21-526EZ listing hydronephrosis under DC 7509. Include imaging studies, treatment records, and kidney function tests. Document the cause of the obstruction and its connection to service.
Common Mistakes
Not getting imaging during acute episodes to document the obstruction Failing to monitor kidney function for progressive damage Not connecting the underlying cause of obstruction to a service-related condition
Frequently Asked Questions
Can kidney stones cause hydronephrosis?
Yes. Kidney stones are one of the most common causes of hydronephrosis. When a stone blocks the ureter, urine backs up into the kidney and causes it to swell. If you have service-connected kidney stones and develop hydronephrosis, the hydronephrosis is secondary to the stones.
Is hydronephrosis permanent?
It depends on the cause and duration. If the obstruction is relieved quickly, the kidney usually recovers fully. Prolonged obstruction can cause permanent kidney damage. Chronic or recurring obstructions cause cumulative damage over time.