C85.1
Header — not billableUnspecified B-cell lymphoma
The ICD-10 code for unspecified b-cell lymphoma is C85.1.
C85.1 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 11 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under C85.1
- C85.10Unspecified B-cell lymphoma, unspecified site
- C85.11Unspecified B-cell lymphoma, lymph nodes of head, face, and neck
- C85.12Unspecified B-cell lymphoma, intrathoracic lymph nodes
- C85.13Unspecified B-cell lymphoma, intra-abdominal lymph nodes
- C85.14Unspecified B-cell lymphoma, lymph nodes of axilla and upper limb
- C85.15Unspecified B-cell lymphoma, lymph nodes of inguinal region and lower limb
- C85.16Unspecified B-cell lymphoma, intrapelvic lymph nodes
- C85.17Unspecified B-cell lymphoma, spleen
- C85.18Unspecified B-cell lymphoma, lymph nodes of multiple sites
- C85.19Unspecified B-cell lymphoma, extranodal and solid organ sites
- C85.1AUnspecified B-cell lymphoma, in remission
Related codes in this category
- C85.2Mediastinal (thymic) large B-cell lymphomanon-billable header
- C85.8Other specified types of non-Hodgkin lymphomanon-billable header
- C85.9Non-Hodgkin lymphoma, unspecifiednon-billable header
- C85.1Unspecified B-cell lymphomanon-billable header