Diagnostic Code 5219 · 38 CFR §4.71a
This code covers ankylosis (loss of motion) of the thumb and one other finger on the same hand. Because the thumb is critical for grip and pinch function, combinations involving the thumb receive higher ratings than other two-finger combinations. The rating depends on which other finger is affected and whether the ankylosis is favorable or unfavorable.
| Rating | Criteria |
|---|---|
| 20% | 30-40% — Dominant hand: thumb plus another finger |
| 40% | 20-30% — Non-dominant hand: thumb plus another finger |
Medical records documenting complete loss of motion (ankylosis) in the affected finger joints. X-rays or imaging showing joint fusion or fixation. Range of motion testing showing zero degrees of motion. Documentation of whether ankylosis is in favorable or unfavorable position. Service treatment records or nexus opinion linking the condition to military service.