ICD-10 Code: M20.21 – Hallux rigidus, right foot

ICD-10 code M20.21 corresponds to Hallux rigidus, right foot. This code is classified under the chapter M20 Acquired deformities of fingers and toes, which is part of the M00-M25: Arthropathies category.

The parent chapter is Diseases of the musculoskeletal system and connective tissue.