Amputation of the thumb, index, long, and ring fingers.
To support a 70% rating (major arm) or 60% rating (minor arm), your records need to confirm both the amputation of the thumb, index, long, and ring fingers and which hand is involved. Surgical or operative reports documenting the amputations, along with clear notes identifying the affected hand, are central. VA examination findings that confirm the anatomical losses and describe the residual hand function also matter.
If any of the remaining fingers on the same hand have ankylosis or limited motion that is being evaluated alongside the amputations, range-of-motion measurements and findings about finger position — such as whether joints are fixed in favorable or unfavorable positions and how large the gap is between fingertips and the palm — would be relevant. Statements from you or people who know you describing how the loss affects grip, daily tasks, and work activities can help show the functional impact that exam findings alone may not fully capture.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.