S42.445P
ICD-10-CMNondisplaced fracture (avulsion) of medial epicondyle of left humerus, subsequent encounter for fracture with malunion
This code signifies a malunion of a previously sustained avulsion fracture of the medial epicondyle in the left humerus. An avulsion fracture occurs when a small piece of bone is pulled away by a tendon or ligament. Malunion indicates that the fracture has healed, but in an unsatisfactory or deformed position.
Apply this code for patients presenting with a healed, but anatomically misaligned, avulsion fracture of the left medial epicondyle. This is used during subsequent encounters for ongoing management or evaluation of the malunion, not for the initial injury or active treatment of the acute fracture. It is appropriate when the fracture is no longer acute but has healed with a deformity.
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