Myelodysplastic syndromes


D37-D48neoplasms of unspecified behavior (D49.-)
Excludes 2
D46drug-induced aplastic anemia (D61.1)
Use Additional Code
D46code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
D37-D48Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made.

Related Codes

Refractory cytopenia with multilineage dysplasia and ring sideroblasts
Myelodysplastic syndrome with isolated del(5q) chromosomal abnormality
Refractory anemia, unspecified
Other myelodysplastic syndromes
Myelodysplastic syndrome, unspecified
Myelodysplastic syndromes
Refractory anemia without ring sideroblasts, so stated
Refractory anemia with ring sideroblasts
Refractory anemia with excess of blasts [RAEB]
Refractory anemia with excess of blasts, unspecified