Stress fracture, unsp humerus, subs for fx w malunion

This code signifies a stress fracture of an unspecified humerus that has healed incorrectly, resulting in a malunion. It indicates that the patient is receiving follow-up care for this previously diagnosed and treated fracture complication.

Use this code for patients presenting for ongoing management or treatment of a stress fracture of the humerus that has healed in an anatomically incorrect position. Documentation should clearly state "malunion" and specify the humerus as the affected bone, even if the laterality is not specified.

• Ensure documentation explicitly states "malunion" and "stress fracture" of the humerus.
• This "P" seventh character indicates a subsequent encounter for a fracture with malunion; do not use for initial treatment or routine healing.
• If the laterality (left or right) of the humerus is specified, a more specific code should be used.