S42.426K
ICD-10-CMNondisplaced comminuted supracondylar fracture without intercondylar fracture of unspecified humerus, subsequent encounter for fracture with nonunion
This code describes a supracondylar fracture of the humerus that is broken into multiple pieces (comminuted) but remains in its anatomical position (nondisplaced), without involvement of the intercondylar region. The "K" suffix indicates that this is a subsequent encounter for a fracture that has failed to heal properly (nonunion).
This code is used when a patient presents for follow-up care, treatment, or evaluation of a previously diagnosed nondisplaced comminuted supracondylar fracture of the humerus, and the fracture has not united. This would include scenarios such as surgical intervention for nonunion, casting changes, or imaging to assess the persistent nonunion.
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