Secondary Condition Claim · VASRD 7508
Nephrolithiasis (kidney stones) Secondary to Hydronephrosis
A condition caused or aggravated by an already service-connected disability can be granted its own service connection as a secondary condition under 38 CFR § 3.310. Here's how that works for Nephrolithiasis (kidney stones) when it develops after Hydronephrosis.
Primary condition · VASRD 7509
Hydronephrosis
Swelling of the kidney due to urine backup from obstruction.
Secondary condition · VASRD 7508
Nephrolithiasis (kidney stones)
Formation of stones in the kidney causing pain and urinary problems.
Nephrolithiasis (kidney stones) VA Rating Tiers
The VA rates Nephrolithiasis (kidney stones) the same way whether it's claimed directly or as secondary to Hydronephrosis — severity of Nephrolithiasis (kidney stones) itself determines the percentage.
Example combined rating
30% Hydronephrosis + 30% Nephrolithiasis (kidney stones) = 51%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 30% and 30% combine to 51%, not 60%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
Evidence for a Nephrolithiasis (kidney stones) Secondary Claim
- •ER records documenting each colic episode.
- •CT scan results confirming the presence and location of stones.
- •Urology follow-up records tracking recurrence and treatment.
Common questions about Nephrolithiasis (kidney stones) secondary to Hydronephrosis
- Can Nephrolithiasis (kidney stones) be service-connected as secondary to Hydronephrosis?
- Yes. Under 38 CFR § 3.310, a condition that is caused or aggravated by an already service-connected disability can be granted secondary service connection. You'll need a current Nephrolithiasis (kidney stones) diagnosis and a medical nexus opinion linking it to your service-connected Hydronephrosis — the same standard…
- What VA rating can I get for Nephrolithiasis (kidney stones) as a secondary condition?
- Nephrolithiasis (kidney stones) is rated under VASRD diagnostic code 7508 using the same criteria whether it's a direct or secondary claim: possible ratings are 10%, 30%, 60%. The rating depends on the severity of Nephrolithiasis (kidney stones) itself, not on the severity of Hydronephrosis.
- How does a secondary Nephrolithiasis (kidney stones) claim affect my combined VA rating?
- The VA doesn't add ratings together. Using the official combined-ratings formula (38 CFR 4.25): a 30% rating for Hydronephrosis combined with a 30% rating for Nephrolithiasis (kidney stones) (example figures) produces a combined rating of 51%, not 60%. Approving Nephrolithiasis (kidney stones) as secondary still typic…
- What evidence do I need to service-connect Nephrolithiasis (kidney stones) as secondary to Hydronephrosis?
- Strong evidence for the underlying Nephrolithiasis (kidney stones) diagnosis includes: ER records documenting each colic episode.; CT scan results confirming the presence and location of stones.; Urology follow-up records tracking recurrence and treatment.. For the secondary link itself, a nexus letter from a treating…
Primary condition
Full Hydronephrosis guide
Secondary condition
Full Nephrolithiasis (kidney stones) guide
Estimate your combined rating
See how Hydronephrosis and Nephrolithiasis (kidney stones) combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
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