Presence of left artificial knee joint

This diagnosis code indicates that a patient has undergone a total or partial knee replacement procedure on their left leg. It signifies the permanent presence of a prosthetic device replacing all or part of the natural knee joint. This is a status code, reflecting the current anatomical state rather than an acute condition.

This code is appropriate for patients who have a history of left knee arthroplasty and the artificial joint is currently in place. It should be used as a secondary diagnosis when the presence of the artificial joint is relevant to the patient's current care, such as for follow-up appointments, medication management, or when evaluating for complications related to the prosthesis.

• Always assign this code as a secondary diagnosis, never as a primary.
• Do not use this code if the artificial joint has been removed.
• Pair with codes for any associated complications (e.g., infection, mechanical loosening) if applicable.