Elevated white blood cell count, unspecified

This code indicates a finding of an abnormally high number of leukocytes in the blood, without further specification of the type of white blood cell or the underlying cause. It signifies a general increase in the body's immune response or an inflammatory process.

This code is appropriate when laboratory results show an elevated white blood cell count (leukocytosis) but the specific type of leukocyte (e.g., neutrophils, lymphocytes) is not documented, or the provider has not yet determined the etiology. It is often used as an initial finding before a definitive diagnosis is established.

• Avoid using this code if a more specific type of leukocytosis (e.g., neutrophilia, lymphocytosis) is documented.
• Always seek clarification from the provider if the cause of the elevated WBC is known but not documented.
• This code should be sequenced as a secondary diagnosis when the underlying condition causing the leukocytosis is identified and documented.