ICD-10 Code D72.818 – Other decreased white blood cell count (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D72.818 – Other decreased white blood cell count
What it is
D72.818 identifies a documented decrease in white blood cells that does not fit a more specific leukopenia category. Use it when the record describes other decreased white blood cell count and no narrower diagnosis is stated.
Clinical signs
Clinical features vary; refer to documentation. Patients may be asymptomatic or have findings related to low white blood cells, such as increased infection concern or abnormal complete blood count results.
When to use this code
Use this code when the provider documents decreased white blood cell count but does not specify a different leukopenia type or cause. It is appropriate for problem lists, assessment notes, or lab-based diagnoses when the wording supports an unspecified “other” decrease.
Confirm the note does not identify neutropenia, agranulocytosis, or another more specific condition. If the record only shows a lab abnormality without a documented diagnosis, check documentation before assigning the code.
Do not use for
Do not use this code for neutropenia, agranulocytosis, or other specific white blood cell disorders when documented. Also avoid it when the chart does not clearly support a clinical diagnosis.
Coding tip
Code the most specific white blood cell disorder documented; if specificity is missing, query or check documentation before defaulting to D72.818.