Posterior dislocation of left humerus, initial encounter

This code signifies a posterior displacement of the humeral head from the glenoid cavity in the left shoulder. This type of dislocation is less common than anterior dislocations and often results from specific mechanisms of injury.

Apply this code when documenting the initial treatment or evaluation of a patient presenting with a newly diagnosed posterior dislocation of their left humerus. This includes emergency department visits, initial orthopedic consultations, or the first encounter for definitive management.

• Ensure documentation clearly specifies "posterior" and "left" to support code assignment.
• Verify this is the initial encounter for the injury; subsequent encounters will require a different seventh character.
• Look for associated fractures (e.g., reverse Hill-Sachs lesion) and code them separately if present.