Higher-Level Review process: how long does it take, and what should I expect?

A Higher-Level Review (HLR), requested on VA Form 20-0996 under 38 CFR 3.2601, is a different lane than a supplemental claim. A senior reviewer looks at the evidence that was already in the file at the time of the prior decision and determines whether that decision was correct based on the law and facts as they existed then. No new evidence can be submitted with an HLR, though you can request an informal conference (a phone call) with the reviewer to point out errors in how the prior decision was made, such as a misapplied regulation.

Processing time for HLRs varies by region and workload, and VA does not guarantee a fixed number of days, so it is reasonable to expect it can take several months; checking status periodically on VA.gov or through eBenefits is the most reliable way to track progress rather than waiting for a phone call, since outreach is not automatic unless you requested the informal conference option.

On the substantive issue, the M21-1 provision requiring claims file review for medical examinations applies specifically to VA and VA-contracted Compensation and Pension exams, because those examiners are tasked with rendering an opinion on behalf of VA and must be familiar with the full record to do so. Private physicians completing Disability Benefit Questionnaires are not bound by that internal M21-1 procedural manual provision; they are evaluated instead under general evidentiary standards in 38 CFR 3.159, which look at whether the evidence is competent, credible, and probative, not whether the private provider reviewed the claims file. If a decision denied a claim solely because a private DBQ lacked claims-file review, that is a potential legal or factual error appropriate for HLR to correct, since competent private medical evidence does not automatically become inadequate just because the provider did not have access to VA's file.

The most useful next step is to request (or confirm you requested) an informal conference with the HLR reviewer so you can verbally highlight the specific regulatory citation distinguishing private DBQs from VA/VA-contracted exam requirements, and to keep monitoring the claim status through VA.gov in the meantime.