Posterior subluxation of left radial head, initial encounter

This diagnosis code signifies a partial dislocation of the left radial head, specifically displaced towards the posterior aspect, relative to the capitellum. This injury often involves the annular ligament and can result in pain, limited range of motion, and instability of the elbow joint.

Apply this code for initial encounters with patients presenting with a newly diagnosed posterior subluxation of the left radial head. This includes cases resulting from trauma, such as a fall onto an outstretched hand, or in pediatric patients with "nursemaid's elbow" where the radial head is pulled out of the annular ligament.

• Ensure documentation specifies "posterior" displacement and "left" side for accurate coding.
• Confirm this is the patient's first time receiving active treatment for this specific injury to use the "A" initial encounter seventh character.
• Distinguish from complete dislocations or anterior subluxations, which have different codes.