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Diagnostic Code 5309: Group IX. Function
Muscle Injuries · 38 CFR §4.73 · All codes in this system
| Evaluation criteria | Rating |
|---|---|
| The forearm muscles act in strong grasping movements and are supplemented by the intrinsic muscles in delicate manipulative movements. Intrinsic muscles of hand: Thenar eminence; short flexor, opponens, abductor and adductor of thumb; hypothenar eminence; short flexor, opponens and abductor of little finger; 4 lumbricales; 4 dorsal and 3 palmar interossei | |
| Note: The hand is so compact a structure that isolated muscle injuries are rare, being nearly always complicated with injuries of bones, joints, tendons, etc. Rate on limitation of motion, minimum 10 percent. | |
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.