Intermittent hydrarthrosis, left ankle and foot

This code describes a condition characterized by recurrent, spontaneous, and non-inflammatory effusions into the joint space of the left ankle and foot. These episodes typically resolve within a few days, often without a clear precipitating factor, and are associated with swelling and discomfort.

Apply this code when documentation clearly indicates intermittent hydrarthrosis affecting the left ankle and/or foot. This diagnosis is supported by a history of recurrent, self-limiting joint swelling in the specified anatomical location, often without signs of acute inflammation or infection.

• Ensure the laterality (left) is explicitly documented for the ankle and foot.
• Differentiate from other forms of arthropathy or synovitis; intermittent hydrarthrosis is typically non-inflammatory.
• Do not use if the effusion is due to trauma, infection, or a systemic inflammatory condition, as more specific codes would apply.