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Diagnostic Code 5313: Group XIII. Function
Muscle Injuries · 38 CFR §4.73 · All codes in this system
| Evaluation criteria | Rating |
|---|---|
| Extension of hip and flexion of knee; outward and inward rotation of flexed knee; acting with rectus femoris and sartorius (see XIV, 1, 2) synchronizing simultaneous flexion of hip and knee and extension of hip and knee by belt-over-pulley action at knee joint. Posterior thigh group, Hamstring complex of 2-joint muscles: (1) Biceps femoris; (2) semimembranosus; (3) semitendinosus | |
| Severe | 40% |
| Moderately Severe | 30% |
| Moderate | 10% |
| Slight | 0% |
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Source: eCFR Title 38, 38 CFR §4.73, current as of 2026-11-05. Criteria text is the regulatory text, reproduced verbatim for reference; it is not legal advice.