The spine takes a beating in military service, from carrying heavy loads to repetitive strain to injury. Back conditions are among the most-claimed VA disabilities. This guide explains how the VA rates lumbosacral strain and what a nexus letter needs to establish.
How the VA rates back conditions
Lumbosacral strain is rated under diagnostic code 5237, using the General Rating Formula for the spine. Ratings are based primarily on your range of motion, specifically how far you can bend forward (flexion), along with factors like muscle spasm, abnormal gait, and incapacitating episodes. Ratings commonly range from 10 to 40 percent for strain, and higher in severe cases.
Because the rating turns on range of motion, having your provider measure and document how far you can bend in each direction is important.
Why range of motion documentation matters
At a C&P exam, the examiner measures your range of motion. But your worst days matter too. The VA is supposed to consider flare-ups and painful motion, not just your best measurement on exam day.
Practical steps:
- Have your provider record range-of-motion measurements in each direction
- Document flare-ups: how often, how long, and what they stop you from doing
- Note painful motion. Under the painful-motion principle, pain on movement can support at least the minimum compensable rating.
Connecting the back condition to service
If your service records document the injury or ongoing back complaints, the connection may be straightforward. When they do not, a nexus letter fills the gap by:
- Reviewing your service records and any in-service complaints or duties that strained the spine
- Explaining the medical mechanism linking those to your current condition
- Stating the opinion in VA terms ("at least as likely as not")
Back conditions rarely travel alone
A service-connected back condition commonly leads to secondary claims, including:
- Radiculopathy (nerve pain radiating into the legs, such as sciatica)
- Knee, hip, and shoulder problems from altered gait and compensation
- Depression or anxiety from chronic pain
- Sleep disruption from pain
Each of these, if connected, can raise your combined rating. This is one of the highest-value areas to explore with a provider.
A real-world example
A veteran strained his back carrying gear during service, treated it as a minor issue, and never filed. Two decades later it had become disabling. His records showed only a brief note from service. A provider reviewed his history, explained how the original strain progressed over time, and connected it to his current condition with a clear rationale.