Intermittent hydrarthrosis, left hip

This diagnosis code signifies a condition characterized by recurrent, temporary swelling of the left hip joint due to an accumulation of synovial fluid, without an identifiable underlying cause. It represents a non-inflammatory arthropathy where joint effusion resolves spontaneously, only to recur at irregular intervals.

Apply this code when documentation explicitly states "intermittent hydrarthrosis" affecting the left hip. Supporting clinical notes should describe episodic joint swelling and effusion in the left hip, often without pain or significant inflammation, and typically resolving on its own.

• Ensure documentation specifies "intermittent" and not chronic or persistent hydrarthrosis.
• Verify the laterality is clearly documented as "left hip"; do not assume if not specified.
• Distinguish from other forms of arthropathy or specific causes of joint effusion, which would require a more specific code.