D46 ICD-10-CM Code: Myelodysplastic syndromes
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
D46Myelodysplastic syndromes
ICD-10-CM diagnosis code · United States clinical modification
Where D46 sits
- 1
Chapter 2
Neoplasms (C00-D49)
- 2
Section
Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)
- 3
Category D46
Myelodysplastic syndromes
- 4
Code D46
Myelodysplastic syndromes
Codes under D46
D46 is a non-billable category. Choose the child code that best matches the documented diagnosis.
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 syndromesNotes for this code
Inclusion terms
No inclusion terms are listed for D46.
Code first
No “code first” instruction is listed for D46.
Use additional code
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for D46.
Excludes2
Conditions not included here that may be reported separately when present.
- drug-induced aplastic anemia (D61.1)
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code D46 mean?
D46 is the FY 2027 U.S. ICD-10-CM code for “Myelodysplastic syndromes.”
Is D46 a billable or specific ICD-10-CM code?
No. D46 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is D46 located in ICD-10-CM?
D46 is listed in Chapter 2, Neoplasms (C00-D49), within Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48) (D37–D48), under category D46, Myelodysplastic syndromes.
What coding notes are listed for D46?
No inclusion terms are listed for D46 in this reference record. No code-first instruction is listed. Additional-code instructions: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5). No Excludes1 note is listed. Excludes2 notes: drug-induced aplastic anemia (D61.1).