ICD-10-CM › C00-D49 › C81-C96 › C85.1 Unspecified B-cell lymphoma › C85.1A

Valid for claims with a date of service in the current code year.

Valid FY2025 onwards.

What has happened to this code

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from C85 Other specified and unspecified types of non-Hodgkin lymphoma

Excludes1 - never coded here

• other specified types of T/NK-cell lymphoma (C86.-)
• personal history of non-Hodgkin lymphoma (Z85.72)

Inherited from the C81-C96 section Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

Excludes2 - not included here

• Kaposi's sarcoma of lymph nodes (C46.3)
• secondary and unspecified neoplasm of lymph nodes (C77.-)
• secondary neoplasm of bone marrow (C79.52)
• secondary neoplasm of spleen (C78.89)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

• Lymphomatosis
• Lymphosarcoma
• Lymphoma > non-Hodgkin
• Non-Hodgkin lymphoma NEC
• Lymphoma > B-cell

Codes in the same group

Code	Description	Status
C85.10	Unspecified B-cell lymphoma, unspecified site	Valid
C85.11	Unspecified B-cell lymphoma, lymph nodes of head, face, and neck	Valid
C85.12	Unspecified B-cell lymphoma, intrathoracic lymph nodes	Valid
C85.13	Unspecified B-cell lymphoma, intra-abdominal lymph nodes	Valid
C85.14	Unspecified B-cell lymphoma, lymph nodes of axilla and upper limb	Valid
C85.15	Unspecified B-cell lymphoma, lymph nodes of inguinal region and lower limb	Valid
C85.16	Unspecified B-cell lymphoma, intrapelvic lymph nodes	Valid
C85.17	Unspecified B-cell lymphoma, spleen	Valid
C85.18	Unspecified B-cell lymphoma, lymph nodes of multiple sites	Valid
C85.19	Unspecified B-cell lymphoma, extranodal and solid organ sites	Valid