Periprosth osteolys of internal prosth l knee jt, sequela

This code signifies the long-term consequence of bone degradation around an implanted prosthetic knee joint on the left side, specifically due to the body's reaction to wear particles from the implant. This osteolysis can lead to loosening of the prosthesis and may necessitate revision surgery.

Apply this code when documenting a patient presenting with symptoms or imaging findings consistent with bone loss around a left knee replacement, where this osteolysis is a chronic or residual effect of the initial prosthetic failure or complication. It is appropriate for follow-up encounters after the acute phase of osteolysis has passed, or for conditions that are the direct result of the osteolysis.

• Always ensure laterality (left knee) is accurately documented in the patient's record.
• This "S" code indicates a sequela; use it for conditions that are the late effects or residual complications of the periprosthetic osteolysis.
• Code any associated complications, such as mechanical loosening or pain, in addition to this code.