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5281
§ 4.71a Schedule of ratings—musculoskeletal system.

Big toe stiffness (hallux rigidus)

The big toe joint is stiff and painful, limiting its ability to bend.

What the rating means

Hallux rigidus is rated under diagnostic code 5281. The regulation does not assign its own set of percentage ratings. Instead, VA rates severe, unilateral hallux rigidus the same way it rates severe hallux valgus — meaning the criteria and percentages that apply to severe hallux valgus are applied directly to your condition. The regulation also states that a rating under this code cannot be combined with a rating for claw foot. Because the rating follows the hallux valgus formula rather than spelling out separate percentages here, the specific numbers you may see on your rating decision come from that shared formula rather than from this diagnostic code on its own.

Evidence that helps

Because this condition is rated as severe hallux valgus, the evidence that matters most is whatever shows your big toe meets that level of severity. Medical records documenting the degree of stiffness or rigidity at the metatarsophalangeal joint are central. X-ray findings showing structural changes at the joint can support a severe characterization. Range-of-motion measurements from a VA or private examination showing significantly restricted movement help establish how limiting the condition is. Your examiner's clinical findings about pain, gait disturbance, and weight-bearing difficulty are also relevant. Statements from you or people who observe you daily — describing how the stiffness affects standing, walking, or work tasks — can round out the picture of functional loss tied to the severity criteria.

Secondary conditions

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.