ICD-10 Code C94.6 – Myelodysplastic disease, not elsewhere classified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C94.6 – Myelodysplastic disease, not elsewhere classified
What it is
C94.6 identifies myelodysplastic disease when the record does not fit a more specific myelodysplastic syndrome code. Use it for clonal marrow disorders with ineffective blood cell production when documentation is nonspecific.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe cytopenias, abnormal blood cell morphology, or bone marrow dysplasia, but the exact pattern should be documented by the clinician.
When to use this code
Use C94.6 when the provider documents myelodysplastic disease without naming a more specific subtype. It may also apply when the chart confirms a myelodysplastic disorder but does not provide enough detail for a more precise code. If the record names a defined subtype, code that condition instead.
Do not use for
Do not use this code for unspecified anemia, leukemia, or other marrow disorders that are separately documented. If the diagnosis is more specific or unclear, check documentation.
Coding tip
Review the pathology or assessment wording carefully; code C94.6 only when the provider documents myelodysplastic disease and no more specific category is stated.