Other fracture of shaft of unspecified ulna, sequela

This code signifies a long-term complication or late effect arising from a previous "other" type of fracture to the shaft of the ulna, where the specific side (left or right) is not documented. It indicates that the initial injury has resolved, but the patient is now experiencing a residual condition directly attributable to that fracture.

Apply this code when a patient presents with a chronic issue, such as persistent pain, deformity, nonunion, malunion, or functional limitation, that is a direct consequence of an old, unspecified ulnar shaft fracture. This is appropriate for follow-up encounters addressing these lasting effects, rather than the initial acute injury.

• Always sequence this code after the code for the specific sequela (e.g., M84.3x for nonunion).
• Ensure documentation clearly links the current condition to a previously sustained ulnar shaft fracture.
• Avoid using this code for acute or subacute fractures; it is exclusively for late effects.