Nondisp fx of trapezm, unsp wrist, subs for fx w delay heal

This code signifies a nondisplaced fracture of the trapezium bone in the wrist that is currently undergoing treatment for delayed healing. It indicates that the initial injury has been managed, but the bone is not healing at the expected rate.

Apply this code for patients presenting for follow-up care of a trapezium fracture where imaging or clinical assessment confirms delayed union. This would typically be used after the initial acute treatment phase, when the patient is still under active management for the fracture's healing progression.

• Ensure documentation clearly specifies "nondisplaced" and identifies the trapezium bone.
• Verify the encounter is for "subsequent care" and explicitly mentions "delayed healing."
• Do not use for initial fracture treatment or for fractures that are healing normally.