Not every claim needs an independent medical opinion. Some conditions are presumptive, some are documented plainly in service treatment records, and some are granted on the strength of a Compensation and Pension examination. The claims that stall are usually the ones where the diagnosis is clear but nothing in the file explains how it relates to service. Below are the categories where that gap shows up most often.
Conditions diagnosed years after discharge
Obstructive sleep apnea is the classic example. Many veterans are diagnosed a decade or more after separation, with no in-service sleep study, which leaves the rater with no documented onset. See sleep apnea and service connection for how these claims are usually built.
Secondary conditions
When a new condition flows from an already service-connected one - hypertension after sleep apnea, migraines after tinnitus, knee and back problems from an altered gait - the relationship is a medical question, not a records question. Secondary service connection explains the standard, and 38 CFR 3.310 covers both causation and aggravation.
Mental health claims
Post-traumatic stress disorder, depression, and anxiety claims often depend on how the stressor and the current diagnosis are linked in the clinical record. See PTSD service connection and mental health claim evidence. Our psychological evaluation package begins with a free screening evaluation, so a veteran finds out whether the case is supportable before proceeding.
Where veterans start
Every case is different, and there is no obligation at any step. When veterans want to understand what their records actually support, these are the two most common starting points:
- Medical records review
A licensed physician reviews your records for a $250 flat fee and identifies which conditions the available evidence may support. The fee is refunded in full if nothing supportable is identified.
- Nexus letter
When the records support one, a licensed provider writes the medical opinion that addresses the link between your condition and your service or an already service-connected disability.
Musculoskeletal conditions with thin service records
Chronic back, knee, foot, and shoulder conditions are common, but many veterans never went to sick call. Back pain with no in-service complaints covers how continuity of symptoms and lay evidence work in those claims.
Hearing, exposure, and internal medicine claims
Tinnitus and hearing loss depend on noise-exposure history matched to audiometric findings - see tinnitus service connection. Airborne-hazard and burn pit claims are partly covered by PACT Act presumptions, explained in burn pits and airborne hazards; conditions outside the presumptive lists still need a medical link. Digestive and endocrine conditions frequently arise as secondaries, as in GERD secondary to PTSD.
How to tell whether your claim is in this group
Read your records the way a rater would: is there anything in the file, written by a clinician, that states an opinion on the relationship between your condition and service? If not, that is the gap. The role of medical evidence explains how each piece of a claim file fits together. A medical records review identifies which conditions your records can actually support before you purchase a nexus letter. No one can guarantee an outcome, and the VA decides every claim.