| Clinical result | Ask the insurer | Keep for the claim |
|---|---|---|
| Evaluation leads to surgery | Which assessment, testing and operative charges are eligible? | Referral, diagnosis, detailed estimate and final bill. |
| The pet is not a surgical candidate | Can necessary diagnostic work qualify even though no operation follows? | Specialist findings and the reason for declining surgery. |
| One eye is treated now | How do the bilateral and related-condition definitions apply to both eyes? | Separate findings for each eye and earlier eye records. |
| The treatment plan changes | Does an earlier estimate or advance response need updating? | Revised estimate, new findings and written response. |
Cornell’s ophthalmology service describes retinal-function testing and ultrasound in cataract assessment; findings can affect whether surgery is performed. The insurance question therefore starts before the operating room. Testing that helps decide against surgery still has a clinical purpose, but its coverage needs its own answer.