Path fx in oth disease, unsp site, subs for fx w nonunion

This code signifies a bone fracture that occurred due to an underlying medical condition, rather than trauma, and is currently experiencing a failure of the bone ends to heal (nonunion). The specific location of the fracture is not documented. This particular encounter is for ongoing treatment of this nonunion.

Apply this code for patients presenting for follow-up care of a pathological fracture that has not healed, where the fracture site is not specified in the medical record. Documentation should clearly indicate a pathological origin of the fracture, the presence of nonunion, and that this is not the initial treatment encounter.

• Always strive for a more specific anatomical site code if available in the documentation.
• Ensure the documentation explicitly states "nonunion" and "pathological fracture" to support this code.
• Sequence this code after the underlying disease causing the pathological fracture, if applicable and still active.