Thumb and index — VA Rating Criteria (38 CFR DC 5142)

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

Diagnostic Code 5142 is the VA rating identifier for Thumb and index within 38 CFR 38 CFR § 4.71a. It defines the specific symptom criteria and percentage thresholds a VA adjudicator uses to assign a disability rating. The diagnostic code is listed on a veteran's rating decision letter.

The highest schedular rating for Thumb and index under DC 5142 is 50%. This tier requires: 40. Veterans who cannot secure substantially gainful employment due to Thumb and index alone or in combination with other service-connected conditions may also qualify for TDIU at the 100% compensation rate under 38 CFR § 4.16.

Thumb and index is rated under 38 CFR 38 CFR § 4.71a, Diagnostic Code 5142. This section is part of the Schedule for Rating Disabilities (38 CFR Part 4) and can be read in full at the eCFR website.

Secondary conditions caused or aggravated by Thumb and index may be ratable under 38 CFR § 3.310. Veterans should work with a VSO or accredited claims agent to document the medical relationship.

Service connection for Thumb and index requires three elements: (1) a current diagnosis of the condition, (2) an in-service event, injury, or disease that may have caused or aggravated it, and (3) a medical nexus connecting the current diagnosis to that in-service event. A nexus letter from a treating physician or independent medical examiner is the most reliable nexus evidence. C&P exam findings can also establish nexus if adequately documented.