Disp fx of unspecified ulna styloid process, sequela

This code signifies a long-term complication or late effect resulting from a previously displaced fracture of the styloid process of the ulna, where the specific side (left or right) is not documented. The styloid process is a small, pointed projection at the end of the ulna bone in the forearm, near the wrist. Sequelae can include chronic pain, nonunion, malunion, or functional impairment.

Apply this code when documenting a patient presenting for treatment of a condition directly attributable to a past displaced fracture of the ulnar styloid, and the initial injury occurred some time ago. This is appropriate for follow-up visits addressing residual issues like chronic instability, degenerative changes, or persistent pain from the original fracture.

• Always use an additional code to specify the nature of the sequela (e.g., M25.53- for chronic pain, M84.28- for nonunion).
• Ensure documentation clearly links the current condition to the previous ulnar styloid fracture.
• This "S" seventh character indicates sequela and should only be used for conditions that are residual effects after the acute phase of the injury has passed.