Injury of unspecified iliac vein, sequela

This code signifies a long-term or late-effect complication resulting from a past injury to an unspecified iliac vein. This could include conditions like chronic venous insufficiency, post-thrombotic syndrome, or persistent pain directly attributable to the original trauma, where the specific iliac vein (e.g., common, external, internal) was not documented.

Apply this code when documenting a condition that is a direct consequence of an old, resolved injury to an iliac vein, and the specific vein involved was never identified. This is appropriate for follow-up encounters where the sequela of the original injury is being treated or evaluated, and the acute injury itself is no longer present.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., I87.0 for post-thrombotic syndrome).
• Ensure documentation clearly links the current condition to a past iliac vein injury.
• Only use when the specific iliac vein (common, external, internal) was not specified in the original injury documentation.