Nondisp fx of pisiform, unsp wrist, subs for fx w nonunion

This code describes a situation where a patient has a fracture of the pisiform bone in an unspecified wrist that is not displaced. The fracture has failed to heal properly, resulting in a nonunion, and the patient is presenting for follow-up care related to this ongoing issue.

Use this code for a patient who has previously been diagnosed with a nondisplaced pisiform fracture of an unspecified wrist and is now being seen for management of a confirmed nonunion. This applies to subsequent visits after the initial treatment of the fracture, where the focus is on addressing the delayed or failed healing process.

• Ensure documentation clearly specifies "nonunion" and that the fracture is "nondisplaced."
• Verify that the encounter is for follow-up care of the nonunion, not the initial treatment or routine healing.
• Confirm that the specific wrist (left or right) is not documented; otherwise, a more specific code should be used.