C85.1 – Unspecified B-cell lymphoma
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lymphoid, hematopoietic and related tissue
- Code
C85.1(claims format:C851)- Description
- Unspecified B-cell lymphoma
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue
- Parent codes
- C85
Billable codes under C85.1
C85.1 is a header code and cannot be used on claims. Choose the most specific code:
- C85.10 – Unspecified B-cell lymphoma, unspecified siteBillable
- C85.11 – Unspecified B-cell lymphoma, lymph nodes of head, face, and neckBillable
- C85.12 – Unspecified B-cell lymphoma, intrathoracic lymph nodesBillable
- C85.13 – Unspecified B-cell lymphoma, intra-abdominal lymph nodesBillable
- C85.14 – Unspecified B-cell lymphoma, lymph nodes of axilla and upper limbBillable
- C85.15 – Unspecified B-cell lymphoma, lymph nodes of inguinal region and lower limbBillable
- C85.16 – Unspecified B-cell lymphoma, intrapelvic lymph nodesBillable
- C85.17 – Unspecified B-cell lymphoma, spleenBillable
- C85.18 – Unspecified B-cell lymphoma, lymph nodes of multiple sitesBillable
- C85.19 – Unspecified B-cell lymphoma, extranodal and solid organ sitesBillable
- C85.1A – Unspecified B-cell lymphoma, in remissionBillable
Notes for C85.1
- If B-cell lineage or involvement is mentioned in conjunction with a specific lymphoma, code to the more specific description.
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
C85 – Other specified and unspecified types of non-Hodgkin lymphoma
Block C81-C96
Index terms for C85.1
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in C85
Frequently asked questions
What is ICD-10 code C85.1?
C85.1 is the ICD-10-CM code for unspecified B-cell lymphoma, in the block C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).
Is C85.1 a billable code?
No. C85.1 is a header code with more specific child codes; report one of the billable codes listed above.
What category does C85.1 belong to?
It belongs to category C85 – Other specified and unspecified types of non-Hodgkin lymphoma.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.