Diagnostic Code 5124 · 38 CFR §4.71a
Amputation of the thumb at the metacarpophalangeal joint or through the proximal phalanx. Rated at 40% dominant or 30% non-dominant. Loss at this level eliminates opposition function.
| Rating | Criteria |
|---|---|
| 30% | Non-dominant extremity: amputation at metacarpophalangeal joint or through proximal phalanx. Rated at 30%. |
| 40% | Dominant extremity: amputation at metacarpophalangeal joint or through proximal phalanx. Rated at 40%. |
Service treatment records or VA medical records documenting the amputation. Operative reports if surgical. Documentation of the specific amputation level. Prosthetic evaluation records. For traumatic amputations, line of duty determination and incident documentation.