Unspecified subluxation of left patella, sequela

This code indicates a past, unspecified partial dislocation of the left kneecap that is now causing a residual effect or complication. The original injury has resolved, but its lasting impact on the patient's health is being addressed. The specific nature of the subluxation is not documented.

Apply this code when a patient presents with a current condition or symptom that is a direct consequence of a previously sustained, unspecified subluxation of the left patella. This is appropriate for follow-up encounters addressing chronic pain, instability, or functional limitations stemming from the old injury. It should be used when the acute phase of the subluxation has passed.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic pain, osteoarthritis).
• Ensure documentation clearly links the current condition to the prior patellar subluxation.
• Avoid using this code for acute or current subluxations; those require different codes from the S83.00- range.