Lateral subluxation of right patella, sequela

This code signifies a chronic or long-term complication resulting from a prior lateral displacement of the right kneecap that did not fully dislocate. It indicates persistent issues or conditions directly attributable to an old injury where the patella partially slipped out of its normal groove.

Apply this code when documenting a patient presenting with ongoing symptoms or conditions (e.g., chronic pain, instability, arthritis) on the right side, directly linked to a previously sustained lateral patellar subluxation. This is appropriate for follow-up encounters addressing the residual effects of the original injury, not the initial acute event.

• Ensure documentation clearly states the condition is a sequela of a previous subluxation, not an acute event.
• Always code the specific sequela (e.g., M17.11 for right knee osteoarthritis) first, followed by this sequela code.
• Verify the laterality is correctly documented as "right."