{"page":"https://casescribe.ai/explorer/conditions/aneurysm-any-large-artery","generated_at":"2026-10-03T18:34:17.464Z","data_as_of":{"decisions":944125,"first_year":2017,"last_year":2026,"latest_decision":"2026-04-30","cfr":"2026-10-01","m21":"2026-09-29"},"about":{"publisher":"CaseScribe AI (VA Law Explorer)","source":"Public Board of Veterans' Appeals decisions (appeals of VA decisions, not VA's first decisions), M21-1 Adjudication Procedures Manual, 38 CFR Parts 3 and 4.","method":"Outcomes are issue-level: each condition the Board decided in a decision counts once. Decision data is extracted by AI and can contain errors. Rates describe past appeals and do not predict any claim.","disclaimer":"For research only. CaseScribe AI is not a law firm and this is not legal advice. Verify figures against the source decisions and regulations.","attribution":"Cite as: VA Law Explorer, CaseScribe AI, with the page URL."},"data":{"condition":"Aneurysm any large artery","all_conditions_granted_pct":19.4,"decisions":800,"years":"2017-2026","granted_pct":12.8,"denied_pct":30.5,"remanded_pct":55.4,"granted_on_merits_pct":29.5,"by_year":[{"year":2017,"issues":45,"granted_pct":8.9,"denied_pct":42.2,"remanded_pct":48.9},{"year":2018,"issues":85,"granted_pct":7.1,"denied_pct":34.1,"remanded_pct":57.6},{"year":2019,"issues":115,"granted_pct":13,"denied_pct":33,"remanded_pct":51.3},{"year":2020,"issues":89,"granted_pct":7.9,"denied_pct":30.3,"remanded_pct":60.7},{"year":2021,"issues":102,"granted_pct":9.8,"denied_pct":28.4,"remanded_pct":60.8},{"year":2022,"issues":87,"granted_pct":11.5,"denied_pct":27.6,"remanded_pct":60.9},{"year":2023,"issues":97,"granted_pct":13.4,"denied_pct":26.8,"remanded_pct":55.7},{"year":2024,"issues":84,"granted_pct":20.2,"denied_pct":21.4,"remanded_pct":58.3},{"year":2025,"issues":97,"granted_pct":16.5,"denied_pct":30.9,"remanded_pct":49.5},{"year":2026,"issues":31,"granted_pct":22.6,"denied_pct":25.8,"remanded_pct":48.4}],"benefit_of_doubt_in_grants_pct":72.5,"evidence_on_merits":[{"evidence":"va_exam_favorable","decisions_with":89,"granted_pct_with":66.7,"granted_pct_without":22.6},{"evidence":"va_exam_unfavorable","decisions_with":588,"granted_pct_with":25.9,"granted_pct_without":48.2},{"evidence":"nexus_positive","decisions_with":125,"granted_pct_with":69,"granted_pct_without":16.8},{"evidence":"nexus_negative","decisions_with":453,"granted_pct_with":24.6,"granted_pct_without":39},{"evidence":"private_opinion","decisions_with":261,"granted_pct_with":40.3,"granted_pct_without":21.3},{"evidence":"treating_physician","decisions_with":42,"granted_pct_with":48,"granted_pct_without":28},{"evidence":"lay_statement","decisions_with":557,"granted_pct_with":22.7,"granted_pct_without":54.8},{"evidence":"combat_service","decisions_with":59,"granted_pct_with":35.7,"granted_pct_without":28.9}],"top_reasons":{"granted":[{"reason":"current diagnosis established","decisions":16},{"reason":"caused by the service-connected disability","decisions":13},{"reason":"service connection established","decisions":6},{"reason":"presumption of soundness not rebutted","decisions":2},{"reason":"service connection granted","decisions":2}],"denied":[{"reason":"no in-service complaints, treatment or diagnosis","decisions":35},{"reason":"va examiner: less likely than not related to service","decisions":32},{"reason":"preponderance of the evidence against the claim","decisions":21},{"reason":"service records negative or silent","decisions":18},{"reason":"no current diagnosis","decisions":17},{"reason":"current diagnosis established","decisions":8}]},"recent_examples":{"granted":[{"case_id":"A26032821","year":2026,"judge":"M. C. WILSON","rationale":"Private practitioner opinion noted hypertension's role in aortic dilation progression; Satisfied \"but-for\" causation standard for secondary service connection; Satisfied elements of current diagnosis, service-connected primary disability, and nexus"},{"case_id":"A26027979","year":2026,"judge":"MICHAEL MARTIN","rationale":"Favorable finding of current disability diagnosis; Favorable finding of presumed in-service herbicide exposure; Private medical opinion found highly probative for nexus; Benefit of the doubt applied due to approximate balance of evidence"},{"case_id":"A26024338","year":2026,"judge":"S.C. KREMBS","rationale":"Veteran diagnosed with aortic aneurysm.; Hypertension is now service-connected.; VA examiner provided positive secondary nexus opinion linking hypertension to aortic aneurysm.; Evidence found in approximate balance, resolving doubt in Veteran's favor."}],"denied":[{"case_id":"A26035789","year":2026,"judge":"D. JOHNSON","rationale":"VA examiner found condition less likely than not caused by toxic exposure.; VA examiner attributed condition to hyperlipidemia, not herbicide exposure.; Private physician's nexus opinion lacked rationale."},{"case_id":"A26032221","year":2026,"judge":"MICHAEL A. HERMAN","rationale":"Competent and probative evidence weighs against service connection.; Aortic aneurysm attributed to aging, hypertension, or family history.; In-service findings (chest pain, heart murmur) not causes of aneurysm."},{"case_id":"A26019935","year":2026,"judge":"JENNA BRANT","rationale":"No in-service complaints, treatment, diagnosis, or pathology for cardiovascular disability in STRs.; First manifestation of aortic aneurysm and coronary artery disease occurred decades after service.; VA examiner opined asbestos exposure does not cause cardiovascular problems.; Private medical opini… [truncated, 137 chars omitted]"}]},"how_va_rates":null,"rules":[]}}