Knee instability
Knee, other impairment (recurrent subluxation or instability). Diagnostic Code 5257.
Overview
Knee instability means the knee gives way or slips out of place, often after a ligament injury. Running, rucking, and jumping put a lot of strain on knees.
How VA rates it
Diagnostic Code 5257 · 38 CFR 4.71a
Here is a plain language summary of the rating levels in the regulation. Read the official text for the exact wording.
| Rating | Summary of the criteria |
|---|---|
| 30% | Unrepaired or failed repair of a complete ligament tear causing persistent instability, and a provider prescribes both an assistive device and bracing. |
| 20% | Persistent instability with a provider prescribed brace or assistive device, as described in the listed criteria. |
| 10% | Persistent instability from a sprain or ligament tear without a prescription for an assistive device or bracing. |
Knee motion loss is rated under different codes and may be rated separately. Read the full criteria on eCFR.
Common secondary connections
These are conditions often discussed in connection with Knee instability. A secondary claim generally needs medical evidence that one condition caused or worsened another. This list is general education, not a suggestion about any claim.
- Hip or back conditions from altered walking
- Opposite knee
Presumptive notes
VA does not list this condition on its main presumptive lists covered in this library. Service connection is generally shown with evidence of a current condition, an in service event, and a link between them. See VA hazardous materials exposure for other presumptive programs.
Evidence veterans generally gather
VA describes evidence types in its evidence guide. For this condition, veterans often collect:
- Orthopedic records and imaging
- Prescription records for a brace or cane
- Range of motion and stability testing
- A current diagnosis from a medical provider
- Service treatment records and personnel records
- VA and private treatment records
- Statements from you, family, or fellow service members (lay statements)
- A Disability Benefits Questionnaire (DBQ) completed by a provider, if available
Official source
Rating levels: 38 CFR 4.71a on eCFR. Rules change; always confirm the current text.
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