Finally Service connected. Advise on supplemental, HLR and knee replacement. Please help!

Congratulations on your service connection; your immediate path forward is to file a **Supplemental Claim** (VA Form 20-0995) with **new and relevant evidence**, specifically the medical records detailing your upcoming total knee replacement surgery and the subsequent recovery. This is the correct lane because you are introducing new evidence not previously considered by VA, per 38 CFR 3.2501. The surgery itself is a key event: under 38 CFR 4.71a, Diagnostic Code 5055, a total knee replacement warrants a 100% disability rating for one month following the procedure, followed by a mandatory VA examination to determine a permanent rating based on residual symptoms like pain, weakness, and instability, typically rated under DC 5261 or 5260. Do not file a Higher-Level Review (HLR) now, as an HLR (VA Form 20-0996) is for arguing an error based on the existing record and does not permit submission of new evidence like your surgical records. Ensure your Supplemental Claim includes all operative reports, treatment notes, and a nexus statement from your surgeon linking the need for the replacement to your service-connected knee condition, as established in *DeLuca v. Brown* regarding increased severity. Your actionable steps are: 1) Undergo surgery, 2) Gather all related medical documentation, 3) File the Supplemental Claim promptly to preserve the earliest effective date for the increased rating. *Disclaimer: This is educational information for claims strategy based on VA policy and should not be construed as legal or medical advice; for personalized guidance, consult an accredited VA attorney or agent.*