Hallux rigidus

This code represents a degenerative arthritic condition affecting the metatarsophalangeal joint of the great toe, characterized by stiffness and pain. It results from cartilage damage and bone spur formation, leading to restricted motion and functional impairment.

This code is appropriate for documenting a diagnosis of hallux rigidus, often presenting with pain, swelling, and limited dorsiflexion of the great toe. Documentation should clearly indicate the presence of degenerative changes in the first MTP joint, typically confirmed by physical examination and imaging studies.

• Differentiate from hallux valgus (bunion), which is a deformity rather than primarily an arthritic condition.
• Consider laterality if specified in the documentation (e.g., right vs. left foot), though this code does not allow for laterality.
• Look for associated conditions like osteophytes or joint space narrowing mentioned in radiology reports.