D46: Myelodysplastic syndromes
Codes under D46 (Myelodysplastic syndromes). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| D46.0 | Refractory anemia without ring sideroblasts, so stated | ✓ |
| D46.0 | Refractory anemia without ring sideroblasts, so stated | ✓ |
| D46.1 | Refractory anemia with ring sideroblasts | ✓ |
| D46.1 | Refractory anemia with ring sideroblasts | ✓ |
| D46.2 | Refractory anemia with excess of blasts [RAEB] | — |
| D46.2 | Refractory anemia with excess of blasts [RAEB] | — |
| D46.4 | Refractory anemia, unspecified | ✓ |
| D46.4 | Refractory anemia, unspecified | ✓ |
| D46.9 | Myelodysplastic syndrome, unspecified | ✓ |
| D46.9 | Myelodysplastic syndrome, unspecified | ✓ |
| D46.20 | Refractory anemia with excess of blasts, unspecified | ✓ |
| D46.20 | Refractory anemia with excess of blasts, unspecified | ✓ |
| D46.21 | Refractory anemia with excess of blasts 1 | ✓ |
| D46.21 | Refractory anemia with excess of blasts 1 | ✓ |
| D46.22 | Refractory anemia with excess of blasts 2 | ✓ |
| D46.22 | Refractory anemia with excess of blasts 2 | ✓ |
| D46.A | Refractory cytopenia with multilineage dysplasia | ✓ |
| D46.A | Refractory cytopenia with multilineage dysplasia | ✓ |
| D46.B | Refractory cytopenia with multilineage dysplasia and ring sideroblasts | ✓ |
| D46.B | Refractory cytopenia with multilineage dysplasia and ring sideroblasts | ✓ |
| D46.C | Myelodysplastic syndrome with isolated del(5q) chromosomal abnormality | ✓ |
| D46.C | Myelodysplastic syndrome with isolated del(5q) chromosomal abnormality | ✓ |
| D46.Z | Other myelodysplastic syndromes | ✓ |
| D46.Z | Other myelodysplastic syndromes | ✓ |
Frequently asked questions
What is ICD-10-CM code D46?
D46 is an ICD-10-CM category covering Myelodysplastic syndromes. It contains 24 more specific diagnosis codes, 22 of which are billable.
Is D46 a billable code?
No — D46 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example D46.0 — Refractory anemia without ring sideroblasts, so stated). 22 of the 24 codes under D46 are billable.
What codes fall under D46?
D46 includes D46.0, D46.0, D46.1, D46.1, D46.2, plus 19 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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