AHA Coding Clinic® for ICD-9 - 2013 Issue 2; Ask the Editor

Pseudoarthrosis Following Spinal Fusion

A 78-year-old gentleman underwent L4-5 interbody fusion with pedicle screws 2 years ago. He did well for a while but then began having increasing pain across his lower back. A computed tomography (CT) myelogram showed lack of fusion at L4-5. The patient’s diagnosis is listed as L4-5 pseudoarthrosis. What is the correct diagnosis code assignment for L4-5 pseudoarthrosis status post L4-5 interbody spinal fusion? ...

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