Question: If a patient suffers from age-related osteoporosis with a current pathological arm fracture, what ICD-10 code should I choose for the patient? Iowa Subscriber Answer: It depends on what part of the arm is fractured, and which side the fracture is on — if you can find out that information. First: Check if the fracture was in the patient’s humerus or forearm — or both. Also, check the notes to see if the fracture was on the right or left side. Then: Use one of the following codes, or combination of codes, to represent the fracture: X marks the (7th) spot: Note the seventh character “X” in each of the above codes; this is a placeholder that you’ll fill in with the appropriate character from the list at the head of the M80 (Osteoporosis with current pathological fracture) code set: