D46
⚠ Non-billable (Header)Myelodysplastic syndromes
Neoplasms (C00-D49)
⚠️ This is a category header code — not billable. Use a more specific child code below.
📋 Code Instructions
- • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
⚠️ Excludes2
directMay be coded together if both conditions coexist
- • drug-induced aplastic anemia (D61.1)
Child Codes (9)
D46.0Refractory anemia without ring sideroblasts, so statedD46.1Refractory anemia with ring sideroblastsD46.2Refractory anemia with excess of blasts [RAEB]D46.4Refractory anemia, unspecifiedD46.9Myelodysplastic syndrome, unspecifiedD46.ARefractory cytopenia with multilineage dysplasiaD46.BRefractory cytopenia with multilineage dysplasia and ring sideroblastsD46.CMyelodysplastic syndrome with isolated del(5q) chromosomal abnormalityD46.ZOther myelodysplastic syndromes
🧪 Validate Combinations
Add D46 to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
CodeD46
BillableNo — Header code
CategoryNeoplasms (C00-D49)
Excludes10 rule(s)
Excludes21 note(s)
Child codes9
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)