Name
Lymphoid leukemia, NOS
Effective
1978 - 1991
Effective
1992 - 2000
Reportable
for cases diagnosed
1978 and later
Primary Site(s)
C421
Primary site must be bone marrow (C421)
Coding Manual:
Hematopoietic Coding Manual (PDF)
Abstractor Notes
This term is seldom used and is not included in the new classification of hematopoietic and lymphoid neoplasms. There are a number of codes for lymphocytic and lymphoblastic leukemias that would be currently used to describe a neoplasm of lymphoid lineage.
Diagnostic Confirmation
This is a histology for which the Definitive Diagnostic Method does not include Genetics Data or Immunophenotyping, thus Diagnostic Confirmation should never be 3. If genetics and/or immunophenotyping are available, re-review to see if a more specific neoplasm can be coded.
Grade
Not Applicable
Module Rule
None
Alternate Names
Lymphocytic leukemia, NOS [OBS]
Subacute lymphocytic leukemia [OBS]
Definition
Definitive Diagnostic Methods
Bone marrow biopsy
Peripheral blood smear
Genetics Data
None
Immunophenotyping
None
Treatments
None
Transformations to
There are no known transformations
Transformations from
There are no known transformations
Same Primaries
Corresponding ICD-9 Codes
204.9 Unspecified lymphoid leukemia
204.2 Subacute lymphoid leukemia
Corresponding ICD-10 Codes
C91.9 Lymphoid leukemia, unspecified
C91.2 Subacute lymphocytic leukemia
Corresponding ICD-10-CM Codes (U.S. only)
C91.9 Lymphoid leukemia, unspecified (effective October 01, 2015)
Signs and Symptoms
None
Diagnostic Exams
None
Progression and Transformation
None
Epidemiology and Mortality
None
Sources
International Classification of Diseases for Oncology, Third Edition, Second Revision. Geneva: World Health Organization, 2020.
Section: ICD-O-3.2 (2020) Morphological Codes
Pages: http://www.iacr.com.fr/index.php?option=com_content&view=category&layout=blog&id=100&Itemid=577
Section: ICD-O-3.2 (2020) Morphological Codes
Pages: http://www.iacr.com.fr/index.php?option=com_content&view=category&layout=blog&id=100&Itemid=577
National Cancer Institute
Section: General Information About Acute Lymphoid Leukemia
Pages: https://www.cancer.gov/types/leukemia/patient/adult-all-treatment-pdq
Section: General Information About Acute Lymphoid Leukemia
Pages: https://www.cancer.gov/types/leukemia/patient/adult-all-treatment-pdq