Subluxation of distal end of unspecified ulna, subs encntr

This diagnosis code indicates a partial dislocation of the distal (far) end of the ulna bone, where it meets the wrist, but the specific side (left or right) is not documented. This is a follow-up encounter for a patient receiving active treatment for this injury.

Apply this code when a patient presents for ongoing care, such as cast changes, physical therapy, or follow-up imaging, for a previously diagnosed subluxation of the unspecified distal ulna. This code is appropriate for subsequent visits after the initial treatment has begun but before the injury is fully healed.

• Ensure documentation specifies "unspecified" side if laterality is not clear.
• Confirm the encounter type is "subsequent" (D) and not initial (A) or sequela (S).
• Verify the injury is a subluxation, not a complete dislocation.