S52.046N
ICD-10-CMNondisplaced fracture of coronoid process of unspecified ulna, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
This code signifies a fracture of the coronoid process of the ulna that is not displaced, meaning the bone fragments are still in their normal anatomical alignment. This specific encounter is for ongoing treatment of a previously open fracture (where the skin was broken) classified as type IIIA, IIIB, or IIIC, and the fracture has failed to heal properly (nonunion).
Apply this code when documenting follow-up care for a patient with a coronoid process fracture that was initially an open fracture of a severe type and is now complicated by nonunion. This would include situations like continued wound care, assessment for surgical intervention to promote healing, or management of complications related to the nonunion.
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