Path fx in neopltc dis, unsp shldr, subs for fx w nonunion

This code signifies a fracture of an unspecified shoulder bone that occurred due to an underlying neoplastic (cancerous) process, and the fracture has failed to heal properly. The "K" seventh character indicates that this is a subsequent encounter for the fracture, and nonunion is present, meaning the bone ends have not united and healing has ceased.

Apply this code when a patient with a known malignancy presents for ongoing treatment or evaluation of a shoulder fracture that is directly attributed to the cancer, and documentation confirms nonunion. This is appropriate for follow-up visits after initial treatment where the fracture has not healed. Documentation should clearly state the pathological nature of the fracture and the presence of nonunion.

• Always sequence the underlying neoplasm code first, followed by this code.
• Ensure documentation explicitly states "nonunion" for the fracture; otherwise, a different seventh character may be appropriate.
• Verify the specific shoulder bone is not documented; if it is, a more specific code (e.g., M84.511K) should be used.