Pathological fracture, left ulna, init encntr for fracture

This code signifies a fracture of the left ulna that occurred due to an underlying disease process, rather than trauma. It indicates that the patient is receiving active treatment for this specific fracture.

Apply this code when documentation clearly states a pathological fracture of the left ulna, such as a fracture resulting from osteoporosis, bone tumor, or metabolic bone disease. This code is appropriate for the initial phase of treatment, including surgical repair, casting, or other definitive care.

• Ensure documentation specifies "pathological fracture" and the exact bone (ulna) and side (left).
• Do not use this code for traumatic fractures; those require codes from the S52 category.
• Always sequence the underlying disease causing the pathological fracture (e.g., osteoporosis, neoplasm) before this code.