Effusion, right ankle

This code indicates the presence of an abnormal accumulation of fluid within the right ankle joint. This fluid buildup, known as an effusion, can result from various underlying conditions such as inflammation, injury, or infection affecting the joint.

Use this code when documentation clearly states "effusion of the right ankle" or describes fluid accumulation within the right ankle joint. This is often supported by imaging studies (e.g., ultrasound, MRI) or physical examination findings.

• Always specify laterality (right, left, bilateral) when documenting ankle conditions.
• Code the underlying cause of the effusion first, if known and documented (e.g., traumatic injury, inflammatory arthritis).
• Do not confuse with edema, which is swelling in the soft tissues surrounding the joint, not within the joint capsule itself.