Lateral subluxation of right patella, initial encounter

This code signifies a partial dislocation of the right kneecap where it has shifted outwards from its normal position in the trochlear groove. It indicates that the patient is receiving active treatment for this injury for the first time.

Apply this code for a patient presenting with a newly diagnosed lateral subluxation of the right patella, such as after a traumatic event or an acute episode of instability. This code is appropriate for the initial evaluation and management of the injury.

• Ensure documentation specifies "right" patella and "lateral" subluxation.
• The "A" seventh character indicates an initial encounter for active treatment.
• Distinguish from dislocation (S83.001A) or medial subluxation.