Stress fracture, unsp humerus, subs for fx w nonunion

This code signifies a stress fracture of an unspecified humerus that has failed to heal properly, indicating a nonunion. It is used when the patient is receiving active treatment for the nonunion of this specific type of fracture, following the initial treatment phase.

Apply this code for patients presenting with a documented nonunion of a stress fracture of the humerus (when the specific side is not documented) who are undergoing ongoing care for this complication. Documentation should clearly state "nonunion" and indicate that the encounter is for subsequent management of the fracture.

• Ensure documentation specifies "stress fracture" and "nonunion" for accurate code assignment.
• Verify the encounter is for subsequent care of the nonunion, not initial treatment or routine follow-up after healing.
• Do not use this code if the humerus side (left or right) is specified; a more specific code exists for those scenarios.