ICD-10 Code D70.9 – Neutropenia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D70.9 – Neutropenia, unspecified
What it is
D70.9 identifies neutropenia when the record does not specify the cause, type, or severity. Use it for a documented low neutrophil count or a diagnosis of neutropenia without further detail.
Clinical signs
Clinical features vary; refer to documentation. Patients may be asymptomatic or present with recurrent infections, fever, sore throat, or mouth ulcers when neutropenia is clinically significant.
When to use this code
Use D70.9 when the provider documents neutropenia but does not identify a specific etiology such as drug-induced, congenital, or cyclic neutropenia. It also fits when the chart confirms neutropenia and no further classification is available. If the cause is stated, code the more specific option.
Do not use for
Do not use this code for neutropenia with a documented underlying cause, including chemotherapy-related or congenital forms. Do not assign it if the record only mentions leukopenia or another abnormal blood count without neutropenia.
Coding tip
Check the assessment, problem list, and lab interpretation for a more specific neutropenia diagnosis before defaulting to D70.9.