Effusion, left shoulder

This code signifies the presence of an abnormal accumulation of fluid within the synovial joint capsule of the left shoulder. This fluid buildup can lead to pain, swelling, and restricted range of motion in the affected joint. It is a non-specific finding, indicating inflammation or injury within the shoulder.

Use this code when documentation explicitly states "effusion of the left shoulder" or "left shoulder effusion." This diagnosis is typically supported by imaging studies such as ultrasound, MRI, or X-ray, or by physical examination findings consistent with intra-articular fluid. It is often a symptom of an underlying condition.

• Always specify laterality (left, right, bilateral) when documented.
• Do not use this code if a more specific diagnosis for the underlying cause of the effusion is known and documented (e.g., rotator cuff tear with effusion).
• Consider sequencing this code after the primary diagnosis if the effusion is a manifestation of another condition.