D72.18 Eosinophilia in diseases classified elsewhere

Billable ICD-10-CM code, FY2026.

Code first

• underlying disease, such as:
• chronic myelomonocytic leukemia (C93.1-)

Applies from D72 Other disorders of white blood cells

Excludes1 (never code together)

• basophilia (D72.824)
• immunity disorders (D80-D89)
• neutropenia (D70)
• preleukemia (syndrome) (D46.9)

Applies from D72.1 Eosinophilia

Excludes2 (not included here)

• Löffler's syndrome (J82.89)
• pulmonary eosinophilia (J82.-)

MS-DRG index

Defines the logic of DRG(s) 814-816 in MDC 16.

Medicare Code Edits (MCE v43.1 (April 2026))

• Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.

Code annotations containing back-references to D72.18

Back-references to D72.18

• Code Also: C93.1 Chronic myelomonocytic leukemia (", if applicable, eosinophilia (D72.18)")
• Code Also: C94.8 Other specified leukemias (", if applicable, eosinophilia (D72.18)")

Back-references to D72.1

• Code Also: D47.02 Systemic mastocytosis ("hypereosinophilic syndrome (D72.1)")
• Type 1 Excludes: D72.82 Elevated white blood cell count ("eosinophilia (D72.1)")

Diagnosis Index entries for D72.18

• Eosinophilia (allergic) (idiopathic) (secondary) › in disease classified elsewhere

Nearby codes

• D72.110 Idiopathic hypereosinophilic syndrome [IHES]
• D72.111 Lymphocytic Variant Hypereosinophilic Syndrome [LHES]
• D72.118 Other hypereosinophilic syndrome
• D72.119 Hypereosinophilic syndrome [HES], unspecified
• D72.12 Drug rash with eosinophilia and systemic symptoms syndrome
• D72.18 Eosinophilia in diseases classified elsewhere (this code)
• D72.19 Other eosinophilia
• D72.8 Other specified disorders of white blood cells
• D72.81 Decreased white blood cell count
• D72.810 Lymphocytopenia
• D72.818 Other decreased white blood cell count