Kidney stones in cats — diagnosis costs $200-$500 and surgical removal runs $1,500-$4,000 when needed. Mineral deposits form in the kidneys, potentially causing pain, urinary issues, and kidney damage. Some stones can be managed with diet changes alone, while others require surgical intervention. Calcium oxalate stones are the most common type in cats.
Kidney stones (nephroliths) form when minerals concentrate in the urine and crystallize. Calcium oxalate is the most common stone type in cats, followed by struvite. Contributing factors include dehydration, diet, urinary pH imbalance, metabolic disorders, and chronic urinary tract infections. Some cats are genetically predisposed to stone formation. Calcium oxalate is the most common type
Blood in the urine (pink or red-tinged). Frequent urination or straining to urinate. Urinating outside the litter box. Painful urination — vocalizing while in the litter box. Decreased appetite. Lethargy. Some cats with kidney stones show no symptoms at all — stones are found incidentally on X-rays. If a stone blocks the ureter, it's an emergency. Some cats are completely asymptomatic
Abdominal X-rays ($150-$250) can identify most kidney stones. Abdominal ultrasound ($300-$500) provides more detail about stone size, location, and kidney health. Urinalysis ($50-$100) checks for crystals, blood, and infection. Blood work ($100-$200) evaluates kidney function. Average $200-$500
Struvite stones can sometimes be dissolved with prescription diet ($50-$100/month). Calcium oxalate stones cannot be dissolved — they require surgical removal if causing problems. Surgery (nephrolithotomy or ureteral stent placement) costs $1,500-$4,000. Subcutaneous ureteral bypass (SUB) device for blocked ureters costs $3,000-$6,000. Ongoing diet management prevents recurrence. Surgery if needed $1,500-$4,000
Diet management: $600-$1,200/year. Surgical cases: $2,000-$5,000+ including follow-up.
Diet-managed stones need ongoing monitoring. Surgical recovery takes 1-2 weeks. Recurrence is common without dietary prevention.
Increase water intake — wet food, water fountains. Prescription urinary diet if history of stones. Hydration is key to prevention.
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Diet management: $600-$1,200/year.
Most comprehensive pet insurance policies cover kidney stone diagnosis, treatment, and surgery. Standard 14-day illness waiting period applies. Imaging, surgical removal, hospitalization, and follow-up monitoring are typically covered under illness benefits.
If your cat had kidney stones or urinary issues documented before enrollment, all future urinary stone claims may be denied as pre-existing. Some insurers consider any previous urinary crystal finding as grounds for exclusion. Enroll before the first episode.
Surgical removal runs $1,500-$4,000+ — well worth having insurance for. Diet management ($600-$1,200/year) may or may not be covered. Many policies exclude prescription food. The surgical costs alone make insurance valuable for cats prone to stones.
Kidney stones tend to recur — some policies limit coverage for chronic or recurring conditions after the first episode. Check whether your policy covers repeated stone episodes or whether they're treated as related to the initial diagnosis.
🇺🇸 US Pet Insurance Guide
Our guide shows exactly what to check in the fine print — before your first claim gets denied.
Insurance GuideBreeds Most Affected by Kidney Stones
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