Thumb and index

The VA rates Thumb and index under Diagnostic Code 5142 at 40%, 50%. The minimum 40% rating requires: 50. The maximum 50% rating requires: 40.

The VA rates Thumb and index under Diagnostic Code (DC) 5142, governed by 38 CFR 38 CFR § 4.71a. The diagnostic code establishes the specific rating tiers and severity criteria the VA examiner applies.

A 40% rating requires: 50. A 50% rating requires: 40. The difference typically reflects the frequency, severity, or functional impact of the condition as documented in medical records and C&P examination findings.

Possibly. Thumb and index maxes at 50%, which doesn't meet the single-disability TDIU threshold of 60% alone. However, if combined with other service-connected disabilities totaling 70%+ (with one at 40%+), TDIU under 38 CFR § 4.16(a) may apply. Extraschedular TDIU under § 4.16(b) is also available if the condition alone prevents work regardless of rating.

The key evidence for Thumb and index is documentation of how the condition affects daily functioning. For musculoskeletal conditions, range of motion measurements (active, passive, weight-bearing, and non-weight-bearing per Correia v. McDonald) and flare-up documentation are critical. A nexus letter from a qualified medical professional linking the current severity to service is essential for contested claims.

The C&P examiner uses a Musculoskeletal System DBQ and evaluates your condition against the DC 5142 rating criteria. Expect range of motion testing in multiple positions. Under Correia v. McDonald, the examiner must test active, passive, weight-bearing, and non-weight-bearing range of motion. Report your worst flare-up symptoms — if you cannot attend during a flare, request the exam be rescheduled.