Myoglobinuria

This code signifies the presence of myoglobin in the urine, indicating muscle damage or breakdown. Myoglobinuria is a hallmark of rhabdomyolysis, a potentially serious condition where damaged muscle fibers release their contents into the bloodstream.

Use this code when laboratory findings confirm myoglobin in the urine, often in conjunction with elevated creatine kinase (CK) levels. This applies to cases of acute muscle injury, crush syndrome, severe exertion, certain drug toxicities, or metabolic myopathies leading to muscle breakdown. Documentation should clearly state the presence of myoglobinuria.

• Always look for the underlying cause of the myoglobinuria and code it first, if known and documented.
• Do not confuse myoglobinuria with hemoglobinuria; these are distinct conditions with different etiologies.
• Ensure documentation specifies "myoglobinuria" and not just "abnormal urine findings" to support this code.