Orthopedic Coding Alert

You Be The Coder:

Remember Code Combo for This Osseous Defect

Question: A patient with acute hematogenous osteomyelitis of the right shoulder develops a major osseous defect. How should I choose a diagnosis code, or codes, for this condition?

Wisconsin Subscriber

Answer: You will need two diagnosis codes to accurately report this condition.

On the claim, report M86.011 (Acute hematogenous osteomyelitis, right shoulder) to represent the patient’s osteomyelitis. Then report M89.711 (Major osseous defect, right shoulder region) to represent the patient’s osseous defect.

Explanation: In the notes for M89.7- (Major osseous defect), ICD-10 instructs “Code first underlying disease, if known, such as:

  • “aseptic necrosis of bone (M87.-)
  • “malignant neoplasm of bone (C40.-)
  • “osteolysis (M89.5-)
  • “osteomyelitis (M86.-)
  • “osteonecrosis (M87.-)
  • “osteoporosis (M80.-, M81.-)
  • periprosthetic osteolysis (T84.05-).”