Diagnostic Code 7508 · 38 CFR §4.115b
DC 7508 covers nephrolithiasis (kidney stones), ureterolithiasis (ureteral stones), and nephrocalcinosis. Kidney stones are hard mineral deposits is the formation of kidney stones — hard mineral deposits that form in the kidneys. Passing a kidney stone causes severe pain, and stones can cause urinary obstruction, infection, and kidney damage. Veterans have higher rates of kidney stones due to dehydration during deployments, high-protein military diets, and limited water access in field conditions. The condition is often recurrent, with new stones forming over years.
| Rating | Criteria |
|---|---|
| 10% | Only occasional attacks of colic, not infected and not requiring catheter drainage. |
| 20% | Frequent attacks of colic requiring catheter drainage. |
| 30% | Frequent attacks of colic with infection and kidney function impairment, or recurrent stone formation requiring invasive or non-invasive procedures more than two times per year. Severe cases with significant kidney damage are rated as renal dysfunction, which can provide evaluations up to 100%. |
Imaging studies (CT scans, ultrasounds, X-rays) showing stones are essential. Records of each stone episode including ER visits document the frequency. Stone analysis reports identifying the composition guide treatment and support the claim. Records of surgical interventions (lithotripsy, ureteroscopy, stent placement) demonstrate severity. Service records showing deployment conditions contributing to dehydration establish the nexus.
Yes. Dehydration is a primary risk factor for kidney stone formation. Hot deployment environments combined with limited water access, physical exertion, and high-protein field rations create ideal conditions for stone development. If your first stones appeared during or after deployment, the connection to service conditions is strong.
Recurrent stone formation that started during service remains service-connected even when new stones form years later. The underlying metabolic tendency was established during service. Each new episode adds to your documented disability pattern and may support a higher rating.