Search Database ICD-O-3 Code Lists

Name

Lymphoid leukemia, NOS

ICD-O-3 Morphology

9820/3: Lymphoid, leukemia, NOS
Effective 2001 and later

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

Lymphoid leukemia, NOS is not included in the WHO 5th edition of Hematolymphoid Tumors. (See Appendix B in the Hematopoietic Manual, Table B23)

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.

Module Rule

None

Alternate Names

Aleukemic lymphatic leukemia [OBS]
Aleukemic lymphocytic leukemia [OBS]
Aleukemic lymphoid leukemia [OBS]
Lymphatic leukemia, NOS [OBS]
Lymphosarcoma cell leukemia [OBS]
Subacute lymphatic leukemia [OBS]
Subacute lymphocytic leukemia [OBS]
Subacute lymphoid leukemia [OBS]

Definition

Non-specific general term for lymphoid leukemia (unknown if acute or chronic), for which cell typing (B or T) has not been done or information not available.

Definitive Diagnostic Methods

Clinical diagnosis
Histologic confirmation

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-10 Codes (Cause of Death codes only)

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, 3rd edition (including revisions). Geneva: World Health Organization, 2001, 2011, 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
Glossary