Mech loosening of internal left hip prosth joint, sequela

This code signifies a long-term complication where a previously implanted prosthetic joint in the patient's left hip has become mechanically unstable or detached from its fixation. This loosening can lead to pain, instability, and impaired function, often requiring further intervention.

Apply this code when documentation clearly indicates mechanical loosening of a left hip prosthetic joint that is a residual effect or complication of an acute injury or condition. This is appropriate for follow-up encounters for ongoing management or evaluation of this chronic issue.

• Ensure the documentation specifies "mechanical" loosening and not other types of loosening (e.g., infectious).
• Verify the laterality is explicitly stated as "left hip."
• The "S" seventh character indicates a sequela, meaning it's a late effect of the initial problem. Do not use for acute loosening.