Posterior subluxation of right humerus, sequela

This code signifies a partial dislocation of the right humerus bone from the shoulder joint, specifically in a posterior direction, where the condition is a lasting effect or complication of an initial injury. The humeral head remains partially in contact with the glenoid fossa, but its position is abnormal and backward. This indicates a chronic or residual issue stemming from a previous shoulder subluxation.

Use this code when documenting a patient presenting with ongoing symptoms or complications directly attributable to a past posterior subluxation of the right humerus. This applies to situations where the initial injury has resolved, but the patient continues to experience sequelae such as chronic instability, pain, limited range of motion, or recurrent subluxations at the same site. It is appropriate for follow-up encounters addressing these long-term effects.

• Always assign an external cause code (V00-Y99) to describe the circumstances of the original injury, if known and applicable.
• Do not use this code for acute or initial posterior subluxations; those require codes from the acute injury chapter.
• Ensure documentation clearly supports the "sequela" nature of the condition, indicating it's a residual effect rather than an acute event.