B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma and classic Hodgkin lymphoma

ICD-O-3 Morphology

9596/3: Composite Hodgkin and non-Hodgkin, NOS
Effective 2001 and later


for cases diagnosed 2001 and later

Primary Site(s)

Lymph nodes (C770-C779) are the usual primary sites; however, involvement in other sites is possible. If you have confirmation that the only involved site is something other than the lymph nodes, than code to that primary site. See Module 7.

Abstractor Notes

Prior to 2010, the term for this code was composite Hodgkin and non-Hodgkin lymphoma. In the 2008 WHO, the term used to describe this same disease is B-cell lymphoma, unclassifiable, with features indeterminate between diffuse large B-cell lymphoma and classical Hodgkin lymphoma. The change in terminology reflects current clinical knowledge that the non-Hodgkin portion of this lymphoma has proven to be a B-cell immunophenotype.

The most common presentation is with a large anterior mediastinal mass, with or without involvement of supraclavicular lymph nodes. There may be spread to the lung by direct extension, as well as spread to liver, spleen, and bone marrow. Non-lymphoid organs are rarely involved.

Diagnostic Confirmation

This histology can be determined by positive histology (including peripheral blood) with or without genetics and/or immunophenotyping. Review the Definitive Diagnostic Methods, Immunophenotyping and Genetics Data sections below, and the instructions in the Hematopoietic Manual for further guidance on assigning Diagnostic confirmation.


Not Applicable

Module Rule

M5 Module 6: PH 14

Alternate Names

Composite lymphoma
Gray zone lymphoma
Grey zone lymphoma
Hodgkin-like anaplastic large cell lymphoma [OBS]
Large B-cell lymphoma with Hodgkin features
Mediastinal grey-zone lymphoma


B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma (DLBCL) and classic Hodgkin lymphoma (CHL) is a B-cell-lineage lymphoma that demonstrates overlapping clinical, morphological, and/or immunophenotypic features between CHL and DLBCL. These lymphomas are most commonly associated with mediastinal disease, but similar cases have been reported in peripheral lymph node groups as the primary site. Mediastinal cases are often referred to as mediastinal grey-zone lymphoma (MGZL) and non-mediastinal cases are grey-zone lymphoma (GZL).

Definitive Diagnostic Methods

Histologic confirmation

Genetics Data

PDCD1LG2 (also called PDL2) loci at 9p24.1
MYC gains
9p24.1 gains/amplifications


ALK- (no expression/negative)
BCL6+ (expression/positive)
BOB1+ (expression/positive)
CD3+ (expression/positive)
CD4+ (expression/positive)
CD10- (no expression/negative)
CD15+ (expression/positive)
CD20+ (expression/positive)
CD30+ (expression/positive)
CD45+ (expression/positive)
CD79a+ (expression/positive)
OCT2+ (expression/positive)
PAX5+ (expression/positive)


Hematologic Transplant and/or Endocrine Procedures
Hormone therapy

Transformations to

There are no known transformations

Transformations from

There are no known transformations

Corresponding ICD-9 Codes

200.7 Large cell lymphoma

Corresponding ICD-10 Codes

C83.3 Non-Hodgkin lymphoma large cell (diffuse)

Corresponding ICD-10-CM Codes (U.S. only)

C83.3 Diffuse large B-cell lymphoma (effective October 01, 2015)

Signs and Symptoms

Drenching night sweats
Fever (for no known reason)
Large mediastinal mass
Pain in the chest, abdomen, or bones (for no known reason)
Painless swelling in the lymph nodes
Respiratory distress
Skin rash or itchy skin
Superior vena cava syndrome
Weight loss (for no known reason)

Diagnostic Exams

Blood chemistry studies
CT (CAT) scan
Cytogenetic analysis
Flow cytometry
Laparoscopy (rarely performed)
Laparotomy (rarely performed)
Lymph node biopsy
PET (positron emission tomography) scan

Progression and Transformation


Epidemiology and Mortality

Age: 20-40 years most common (13-70 years range)
Sex: male predominance


Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Stein H, Thiele J (Eds):
WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues (Revised 4th edition)
IARC: Lyon 2017
Section: Mature B-cell neoplasms
Pages: 342-344

International Classification of Diseases for Oncology, Third Edition, Second Revision. Geneva: World Health Organization, 2020.
Section: ICD-O-3.2 (2020) Morphological Codes

National Cancer Institute
Section: General Information About Adult Non-Hodgkin Lymphoma (NHL)