Postdysenteric arthropathy, right ankle and foot

This code represents an inflammatory joint condition affecting the right ankle and foot that develops as a reactive arthritis following a dysenteric infection. It is characterized by sterile inflammation of the synovial membranes, often presenting with pain, swelling, and stiffness in the affected joints. The arthropathy is a sequela of a prior gastrointestinal infection, typically bacterial.

Use this code when documentation clearly indicates a diagnosis of reactive arthritis (arthropathy) specifically in the right ankle and foot, and the etiology is identified as post-dysenteric. The patient's history should include a preceding episode of dysentery, and the current joint symptoms are attributed to this prior infection.

• Ensure the documentation specifies "postdysenteric" or "reactive arthritis secondary to dysentery" and clearly identifies the right ankle and foot as the affected site.
• Do not confuse with other forms of reactive arthropathy (e.g., post-infectious, Reiter's syndrome) if the dysenteric origin is not explicitly stated.
• Code the underlying dysenteric infection (if still active or relevant for sequelae) as an additional diagnosis, following sequencing guidelines.