Anterior sublux of proximal end of tibia, left knee, sequela

This code signifies a chronic or residual condition resulting from a prior anterior subluxation of the upper part of the shin bone in the left knee. It indicates that the tibia is still partially displaced forward relative to the femur, and this is a long-term consequence of an initial injury, rather than an acute event.

Apply this code when documentation clearly states a left knee anterior tibial subluxation as a sequela, meaning it's a late effect or complication of an earlier injury. This is appropriate for patients presenting with ongoing symptoms or instability directly attributable to a past subluxation, after the initial healing phase has passed.

• Ensure documentation explicitly states "sequela" or "late effect" for the subluxation.
• Verify the laterality is specified as "left knee."
• Do not use for acute or initial presentations of subluxation; those require acute injury codes.