DC 5224Musculoskeletal38 CFR § 4.71aLast verified: APR 8, 2026

Thumb, ankylosis of — VA Rating Criteria (38 CFR DC 5224)

The VA rates Thumb, ankylosis of under 38 CFR 38 CFR § 4.71a, Diagnostic Code 5224, from 10% to 20% based on the frequency and functional severity of symptoms. The maximum 20% rating requires Unfavorable; 20. Related conditions in the Musculoskeletal body system share this rating framework.

What are the VA rating criteria for Thumb, ankylosis of?

10%Disability Rating

Favorable; 10

20%Disability Rating

Unfavorable; 20

Unfavorable; 20
— 38 CFR 38 CFR § 4.71a, Diagnostic Code 5224 (20% tier)

Common Questions About Thumb, ankylosis of VA Ratings

What is the VA disability rating for Thumb, ankylosis of?

The VA rates Thumb, ankylosis of under Diagnostic Code 5224 at the following tiers: 10%, 20%. The minimum 10% rating requires: Favorable; 10. The maximum 20% rating requires: Unfavorable; 20.

What is Diagnostic Code 5224?

Diagnostic Code 5224 is the VA rating identifier for Thumb, ankylosis of 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.

What is the highest rating for Thumb, ankylosis of?

The highest schedular rating for Thumb, ankylosis of under DC 5224 is 20%. This tier requires: Unfavorable; 20. Veterans who cannot secure substantially gainful employment due to Thumb, ankylosis of alone or in combination with other service-connected conditions may also qualify for TDIU at the 100% compensation rate under 38 CFR § 4.16.

What 38 CFR section governs Thumb, ankylosis of ratings?

Thumb, ankylosis of is rated under 38 CFR 38 CFR § 4.71a, Diagnostic Code 5224. This section is part of the Schedule for Rating Disabilities (38 CFR Part 4) and can be read in full at the eCFR website.

Which conditions are commonly secondary to Thumb, ankylosis of?

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

What evidence do I need to establish service connection for Thumb, ankylosis of?

Service connection for Thumb, ankylosis of 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.

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