S52.042K
ICD-10-CMDisplaced fracture of coronoid process of left ulna, subsequent encounter for closed fracture with nonunion
This code describes a situation where the coronoid process, a small bony projection on the ulna (forearm bone), has fractured and the broken pieces are no longer in their correct anatomical alignment. This specific code is used when the patient is receiving follow-up care for this fracture, which was initially treated without surgery (closed fracture), and the bone fragments have failed to heal together properly (nonunion).
Use this code for patients presenting for ongoing management of a previously diagnosed and treated displaced coronoid process fracture of the left ulna. This applies when imaging or clinical assessment confirms that the fracture has not united after an appropriate healing period, and the initial treatment was non-surgical. This code would be appropriate for subsequent office visits, imaging studies, or discussions regarding further treatment options for the nonunion.
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