Hallux rigidus, left foot

This code identifies a degenerative arthritic condition affecting the metatarsophalangeal joint of the great toe on the left foot. It is characterized by stiffness and limited range of motion, often accompanied by pain and the formation of dorsal osteophytes. The condition progresses from mild limitation to severe rigidity of the joint.

Apply this code when documentation specifies hallux rigidus affecting the left great toe. This diagnosis is typically supported by clinical examination findings of decreased dorsiflexion, pain, and radiographic evidence of joint space narrowing or osteophyte formation. It is appropriate for both initial and subsequent encounters related to this specific condition.

• Ensure laterality is clearly documented as "left foot" to support this specific code.
• Distinguish from hallux valgus (bunion), which involves deviation of the great toe, though both can coexist.
• Look for documentation of severity (e.g., mild, moderate, severe) as this may influence treatment but does not change the code itself.