Posterior disloc of proximal end of tibia, unsp knee, subs

This diagnosis code indicates a posterior displacement of the upper portion of the shin bone relative to the femur, affecting an unspecified knee joint. This specific code is used when the patient is receiving follow-up care for this injury after the initial treatment phase.

This code is appropriate for encounters where a patient is returning for ongoing management, rehabilitation, or evaluation of a previously diagnosed posterior tibial dislocation. This includes visits for physical therapy, follow-up imaging, or assessment of healing and stability.

• Ensure documentation clearly specifies "posterior" dislocation and "subsequent encounter."
• Verify the laterality (left or right knee) if known; if not, "unspecified" is appropriate.
• Do not use for the initial treatment of the dislocation; that requires an "initial encounter" code.