Intermittent hydrarthrosis, left hand

This code describes a recurrent, non-inflammatory effusion into the left hand joint(s) that typically resolves spontaneously. It is characterized by episodes of joint swelling and stiffness, often without a clear precipitating factor, affecting the synovial fluid within the joint capsule.

Use this code when documentation clearly indicates intermittent swelling or fluid accumulation specifically in the left hand joint(s) that is not due to trauma, infection, or a chronic inflammatory arthropathy. Physician notes should specify "intermittent hydrarthrosis" or similar terminology, along with the affected laterality.

• Ensure documentation specifies "intermittent" and not a persistent effusion.
• Verify the laterality is explicitly stated as "left hand"; do not assume.
• Differentiate from other forms of arthropathy or synovitis, especially if an underlying cause is identified.