Medial dislocation of proximal end of tibia, unsp knee, init

This diagnosis describes a specific injury where the upper portion of the shin bone (tibia) has shifted medially (inward) out of its normal alignment with the thigh bone (femur) at the knee joint. This indicates a complete separation of the joint surfaces, specifically on the inner aspect of the knee, without specifying which knee is affected.

Use this code for a patient presenting with an acute, traumatic medial dislocation of the proximal tibia where the specific knee (left or right) is not documented. This code is appropriate for the initial treatment encounter for this injury, such as in an emergency department or initial orthopedic consultation.

• Ensure documentation clearly specifies "medial" dislocation of the proximal tibia.
• Only use the "A" seventh character for the initial encounter for active treatment of the dislocation.
• If the specific knee (left or right) is documented, a more specific code from the S83.13- series should be used.