Post sublux of proximal end of tibia, unsp knee, sequela

This code describes a posterior displacement of the proximal tibia relative to the femur, which is a partial dislocation of the knee joint. It specifically indicates that this subluxation is a long-term consequence or complication of an initial injury or condition, rather than an acute event. The "unspecified knee" component means the laterality (left or right) is not documented.

This code is appropriate for documenting a chronic or residual posterior subluxation of the proximal tibia in the knee where the specific knee (left or right) is not specified in the medical record. It should be used when the provider explicitly states the condition is a sequela, indicating it's a lasting effect of a previous injury or disease. This might be seen in follow-up visits for old knee trauma or chronic instability.

• Always seek clarification from the provider if the laterality of the affected knee is not documented to assign a more specific code.
• Ensure the documentation clearly supports the "sequela" designation; otherwise, an acute subluxation code may be more appropriate.
• Code any associated pain, functional limitations, or other related conditions separately.