Intermittent hydrarthrosis, left shoulder

This code describes a condition characterized by recurrent, self-limiting effusions (excess fluid) within the left shoulder joint, without an identifiable underlying cause such as trauma or infection. The swelling typically resolves spontaneously over several days, only to recur at irregular intervals.

Apply this code when documentation clearly indicates a diagnosis of intermittent hydrarthrosis specifically affecting the left shoulder. This diagnosis is often made after ruling out other causes of joint effusion, and the patient presents with a history of episodic, non-inflammatory joint swelling.

• Ensure the documentation specifies "intermittent" and "hydrarthrosis" for the left shoulder.
• Do not use this code for chronic or persistent effusions, or effusions with an identified etiology (e.g., traumatic, infectious, inflammatory arthritis).
• Always review for any associated conditions or underlying causes that might require additional coding.