Other instability, right ankle

This code signifies a chronic or recurrent laxity of the ligaments supporting the right ankle joint, leading to symptomatic instability. It indicates that the ankle joint is prone to giving way or feeling unstable during weight-bearing or activity, without evidence of a recent acute sprain or fracture.

Use this code for patients presenting with persistent right ankle instability following a previous injury or due to congenital ligamentous laxity. Documentation should clearly state "instability" of the right ankle and rule out acute sprains (e.g., S93.4- codes) or other specific ankle pathologies.

• Differentiate from acute ankle sprains; this code is for chronic or recurrent instability.
• Ensure laterality (right ankle) is clearly documented.
• Consider sequencing with codes for underlying causes if known, such as post-traumatic conditions (e.g., M24.271 for disorder of ligament, right ankle).