Table 1.

Coding myelodysplastic syndrome using the International Classification of Diseases for Oncology, 3rd Edition (ICD-O-3).

MDS	Abbreviation	ICD-O-3
Refractory anemia	RA	9980
Refractory neutropenia	RN	9991
Refractory thrombocytopenia	RT	9992
Refractory anemia with ring sideroblasts	RARS	9982
Refractory cytopenia with multilineage dysplasia	RCMD	9985
Refractory anemia with excess blasts	RAEB	9983
Refractory anemia with excess blasts in transformation	RAEB-t	9984
Myelodysplastic associated with isolated del 5q	5q-	9986
Myelodysplastic/Myeloproliferative neoplasm, unclassifiable	MDS/MPN	9975
Therapy-related myelodysplastic syndrome	t-MDS	9987
Myelodysplastic syndrome, NOS§	MDS-NOS	9989

^§Not otherwise specified.