Unsp fracture of left ischium, subs for fx w nonunion

This code describes a situation where a patient has a fracture of the left ischium, but the specific type of fracture is not documented. Importantly, this encounter is for ongoing treatment of the fracture, and it has been determined that the bone is not healing properly (nonunion).

Use this code when a patient presents for follow-up care of a previously diagnosed, unspecified left ischial fracture that has failed to unite. This typically applies to encounters where non-surgical or surgical interventions are being performed to address the nonunion.

• Ensure documentation clearly states "nonunion" and specifies the left ischium.
• Verify that this is a subsequent encounter for the fracture, not the initial treatment.
• If the specific type of ischial fracture is known, a more specific code should be used.