This reference uses VA rating codes. For a code from a medical record, check ICD-10-CM and the service date. A clinical code alone does not establish a VA rating or a matching VA diagnostic code.
Knee, other impairment of
Musculoskeletal · 38 CFR § 4.71a
Diagnostic Code 5257 is the VASRD entry for Knee, other impairment of. VA applies the controlling criteria, shared formulas, and special instructions shown in 38 CFR Part 4. VMC presents this material for education and reference; it does not determine a Veteran's diagnosis, service connection, or evaluation.
Recorded index labels
These labels are already stored for this diagnostic code. They are not a new condition, rating, or medical relationship.
Appendix B
- Knee, other impairment.
Appendix C
- Knee, other
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Source-verified VASRD criteria
How VA rates this diagnostic code
These percentages summarize the regulatory criteria already mapped to this diagnostic code. They do not predict a Veteran's individual evaluation or establish service connection.
Unrepaired or failed repair of complete ligament tear causing persistent instability, and a medical provider prescribes both an assistive device ( e.g., cane(s), crutch(es), walker) and bracing for ambulation
(b) Unrepaired or failed repair of complete ligament tear causing persistent instability, and a medical provider prescribes either an assistive device ( e.g., cane(s), crutch(es), walker) or bracing for ambulation
Sprain, incomplete ligament tear, or complete ligament tear (repaired, unrepaired, or failed repair) causing persistent instability, without a prescription from a medical provider for an assistive device ( e.g., cane(s), crutch(es), walker) or bracing for ambulation
A diagnosed condition involving the patellofemoral complex with recurrent instability after surgical repair that requires a prescription by a medical provider for a brace and either a cane or a walker
A diagnosed condition involving the patellofemoral complex with recurrent instability after surgical repair that requires a prescription by a medical provider for one of the following: A brace, cane, or walker
A diagnosed condition involving the patellofemoral complex with recurrent instability (with or without history of surgical repair) that does not require a prescription from a medical provider for a brace, cane, or walker
Special rating instructions
- Recurrent subluxation or instability:
- One of the following:
- (a) Sprain, incomplete ligament tear, or repaired complete ligament tear causing persistent instability, and a medical provider prescribes a brace and/or assistive device ( e.g., cane(s), crutch(es), walker) for ambulation.
- Patellar instability:
Regulatory notes
- Note (1): For patellar instability, the patellofemoral complex consists of the quadriceps tendon, the patella, and the patellar tendon.
- Note (2): A surgical procedure that does not involve repair of one or more patellofemoral components that contribute to the underlying instability shall not qualify as surgical repair for patellar instability (including, but not limited to, arthroscopy to remove loose bodies and joint aspiration).
Body system and anatomy metadata
Body system: Musculoskeletal
Anatomy / region tags: multi region, knee
These tags support discovery and body-map compatibility. They do not establish Veteran-specific laterality or entitlement.
Official VA DBQ references
DBQ catalog: va-dbq-2026.09.16 · Retrieved 2026-09-16. Official VA inventory ↗
- Amputations ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Ankle ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Back (Thoracolumbar Spine) ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Bones and Other Skeletal Conditions ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Elbow & Forearm ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Foot Conditions Including Flatfoot (Pes Planus) ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Hand and Finger ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Hip and Thigh ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Knee and Lower Leg ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Muscle Injuries ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Neck (Cervical Spine) ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Osteomyelitis ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Shoulder and/or Arm ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Temporomandibular Disorders ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Wrist ↗ Related resourceCatalog category: Musculoskeletal
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Arthritis ↗ Related resourceCatalog category: Rheumatological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Chronic Fatigue Syndrome ↗ Related resourceCatalog category: Rheumatological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Systemic Lupus Erythematosus (SLE) and other Autoimmune Diseases ↗ Related resourceCatalog category: Rheumatological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
VA maintains some examination forms that are not available for public use. VMC does not infer a one-code-to-one-DBQ relationship.
Evidence information
When reviewing the criteria, useful evidence categories can include diagnosis and treatment records, objective testing identified by the schedule, documented frequency/duration/severity when the criteria use those concepts, and functional effects described in medical or lay evidence. The relevant evidence depends on the actual claim and medical facts.
VMC does not diagnose conditions, guarantee a percentage, or advise anyone to exaggerate symptoms.
Legal basis and source identification
38 CFR § 4.71a · Source current through 2026-08-06 · Verified 2026-08-10
Registry content release: vasrd-registry-2026.08.1