Nondisp fx of ant column of l acetab, subs for fx w nonunion

This code signifies a fracture of the anterior column of the left acetabulum (the socket of the hip joint) that is not displaced. The "nonunion" aspect indicates that the fracture has failed to heal properly after a previous attempt.

This code is appropriate for follow-up encounters where a patient is being treated for a previously diagnosed nondisplaced anterior column acetabular fracture on the left side that has not united. This includes situations where further interventions, such as bone grafting or revision surgery, are being considered or performed due to the nonunion.

• Ensure documentation clearly states "nonunion" and specifies the left acetabulum's anterior column.
• This code is for subsequent encounters; an initial encounter for the same fracture would use a different seventh character.
• Verify laterality (left) is explicitly documented to avoid coding errors.