S42.456K
ICD-10-CMNondisplaced fracture of lateral condyle of unspecified humerus, subsequent encounter for fracture with nonunion
This code signifies a fracture of the outer bony prominence of the lower humerus (upper arm bone) that has not shifted from its normal position. The fracture is in a stage where it is failing to heal properly, and the patient is presenting for ongoing treatment related to this nonunion. The specific side of the body (left or right) is not documented.
Apply this code when a patient is receiving follow-up care for a non-displaced lateral condyle fracture of an unspecified humerus, and the medical documentation explicitly states that the fracture is experiencing nonunion. This would include scenarios such as continued evaluation, cast changes, or preparations for surgical intervention due to the nonunion.
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