ICD10
ICD-10 Code C85.2: Mediastinal (thymic) large B-cell lymphoma
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).
When is it used?
- May be used when a clinician documents mediastinal (thymic) large b-cell lymphoma in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
2Neoplasms (C00-D49)
block
C00-C96Malignant neoplasms
block
C81-C96Malignant neoplasms of lymphoid, hematopoietic and related tissue
category
C85Other specified and unspecified types of non-Hodgkin lymphoma
currentC85
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
OncologistGeneral Physician
Related codes
C85.20Mediastinal (thymic) large B-cell lymphoma, unspecified sitecodeC85.21Mediastinal (thymic) large B-cell lymphoma, lymph nodes of head, face, and neckcodeC85.22Mediastinal (thymic) large B-cell lymphoma, intrathoracic lymph nodescodeC85.23Mediastinal (thymic) large B-cell lymphoma, intra-abdominal lymph nodescodeC85.24Mediastinal (thymic) large B-cell lymphoma, lymph nodes of axilla and upper limbcodeC85.25Mediastinal (thymic) large B-cell lymphoma, lymph nodes of inguinal region and lower limbcodeC85.26Mediastinal (thymic) large B-cell lymphoma, intrapelvic lymph nodescodeC85.27Mediastinal (thymic) large B-cell lymphoma, spleencodeC85.28Mediastinal (thymic) large B-cell lymphoma, lymph nodes of multiple sitescodeC85.29Mediastinal (thymic) large B-cell lymphoma, extranodal and solid organ sitescodeC85.2AMediastinal (thymic) large B-cell lymphoma, in remissioncode
Sibling codes
Mapped diagnoses and classifications
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
C85.2
Replacement codes
C85.20 — Mediastinal (thymic) large B-cell lymphoma, unspecified siteC85.21 — Mediastinal (thymic) large B-cell lymphoma, lymph nodes of head, face, and neckC85.22 — Mediastinal (thymic) large B-cell lymphoma, intrathoracic lymph nodesC85.23 — Mediastinal (thymic) large B-cell lymphoma, intra-abdominal lymph nodesC85.24 — Mediastinal (thymic) large B-cell lymphoma, lymph nodes of axilla and upper limbC85.25 — Mediastinal (thymic) large B-cell lymphoma, lymph nodes of inguinal region and lower limbC85.26 — Mediastinal (thymic) large B-cell lymphoma, intrapelvic lymph nodesC85.27 — Mediastinal (thymic) large B-cell lymphoma, spleenC85.28 — Mediastinal (thymic) large B-cell lymphoma, lymph nodes of multiple sitesC85.29 — Mediastinal (thymic) large B-cell lymphoma, extranodal and solid organ sitesC85.2A — Mediastinal (thymic) large B-cell lymphoma, in remission
Common synonyms
Mediastinal (thymic) large B-cell lymphomaMediastinalMediastinal thymic large B-cell lymphoma
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.