D72.1Eosinophilia

D72.1 is the ICD-10-CM diagnosis code for eosinophilia. It belongs to category D72 (other disorders of white blood cells), block D70-D77 (other disorders of blood and blood-forming organs) and chapter 3 (diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within D72 (other disorders of white blood cells), D72.1 is specifically for eosinophilia. Related codes cover genetic anomalies of leukocytes (D72.0), other specified disorders of white blood cells (D72.8) and disorder of white blood cells, unspecified (D72.9).

To report this condition, pick the subcode that matches the documentation: D72.10 (unspecified), D72.11 ([HES]), D72.12 (syndrome), D72.18 (in diseases classified elsewhere) and D72.19 (eosinophilia).

The conditions in its Excludes2 note aren't part of D72.1, but may be coded alongside it if the patient has both: Löffler's syndrome (J82.89) and pulmonary eosinophilia (J82.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2021 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 288.3 (eosinophilia).