Subluxation of distal end of unspecified ulna, sequela

This code signifies a chronic or late-effect condition involving a partial dislocation of the distal (far) end of the ulna, where the specific side (left or right) is not documented. This subluxation indicates that the joint surfaces are still in partial contact but are misaligned.

Apply this code when documentation indicates a past injury or condition that resulted in a persistent or long-term subluxation of the distal ulna, and the patient is now presenting for treatment of a complication or residual effect of that subluxation. This is appropriate for follow-up care after the acute phase of the injury has passed.

• Always ensure the documentation clearly specifies a "sequela" or "late effect" to justify the 7th character 'S'.
• If the laterality (left or right) of the ulna is known, a more specific code should be used.
• Code also any associated conditions or complications resulting from this chronic subluxation.