S52.516K
ICD-10-CMNondisplaced fracture of unspecified radial styloid process, subsequent encounter for closed fracture with nonunion
This code describes a fracture of the radial styloid process that is not displaced, meaning the bone fragments remain in their normal anatomical alignment. The "subsequent encounter" indicates that the patient is receiving follow-up care for this fracture, and "nonunion" specifies that the bone has failed to heal completely after a typical healing period, despite the fracture being closed (skin intact).
Use this code for patients presenting for ongoing management of a previously diagnosed, nondisplaced radial styloid fracture that has not healed. This applies when the skin over the fracture site was not broken, and the current visit is for complications related to the nonunion, such as pain, limited range of motion, or planning for further intervention.
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