Unsp physl fx upr end humer, l arm, subs for fx w nonunion

This code signifies a left upper humeral growth plate fracture that has not healed properly after initial treatment. The "unspecified" nature indicates the specific type of physeal fracture (e.g., Salter-Harris type) is not documented. This nonunion status implies the bone ends have failed to unite and heal within the expected timeframe.

Use this code for follow-up encounters where a patient with a previously treated left upper humeral physeal fracture presents with evidence of nonunion. This would include situations where imaging confirms persistent fracture lines or a lack of callus formation, and the patient is undergoing further management for this complication.

• Ensure documentation clearly specifies "nonunion" and the left side.
• Verify that the fracture is indeed physeal (growth plate) and of the upper humerus.
• Do not use this code for initial fracture treatment or for malunion, which is a different complication.