Lateral dislocation of unspecified patella, sequela

This code indicates a past lateral displacement of the kneecap that has resulted in a persistent problem or condition. It signifies that the original dislocation has healed, but the patient is now experiencing a long-term consequence directly attributable to that prior injury.

Apply this code when documenting a patient presenting with a chronic issue, such as recurrent instability, chronic pain, or degenerative changes, that is a direct result of a previously sustained lateral patellar dislocation. This is used after the acute phase of the initial injury has passed and the patient is being treated for the lasting effects.

• Ensure documentation clearly links the current condition to a prior lateral patellar dislocation.
• This "S" seventh character indicates a sequela, meaning the patient is being treated for the residual effects of a healed injury.
• Do not use this code for an acute or initial dislocation; those require an "A" (initial encounter) or "D" (subsequent encounter) seventh character.