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ICD-10 Code C83.3: Diffuse large B-cell lymphoma

C83.3 is an ICD-10 diagnosis entry used to group records related to Diffuse large B-cell lymphoma. 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. 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).

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 diffuse 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
C83Non-follicular lymphoma
currentC83

Official coding notes

Inclusion terms
  • Anaplastic diffuse large B-cell lymphoma
  • CD30-positive diffuse large B-cell lymphoma
  • Centroblastic diffuse large B-cell lymphoma
  • Diffuse large B-cell lymphoma, subtype not specified
  • Immunoblastic diffuse large B-cell lymphoma
  • Plasmablastic diffuse large B-cell lymphoma
  • T-cell rich diffuse large B-cell lymphoma
Excludes1 (do not code together)
  • mediastinal (thymic) large B-cell lymphoma (C85.2-)
  • mature T/NK-cell lymphomas (C84.-)

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

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
C83.3
Replacement codes
C83.30 — Diffuse large B-cell lymphoma, unspecified siteC83.31 — Diffuse large B-cell lymphoma, lymph nodes of head, face, and neckC83.32 — Diffuse large B-cell lymphoma, intrathoracic lymph nodesC83.33 — Diffuse large B-cell lymphoma, intra-abdominal lymph nodesC83.34 — Diffuse large B-cell lymphoma, lymph nodes of axilla and upper limbC83.35 — Diffuse large B-cell lymphoma, lymph nodes of inguinal region and lower limbC83.36 — Diffuse large B-cell lymphoma, intrapelvic lymph nodesC83.37 — Diffuse large B-cell lymphoma, spleenC83.38 — Diffuse large B-cell lymphoma, lymph nodes of multiple sitesC83.3A — Diffuse large B-cell lymphoma, in remission

Common synonyms

Diffuse large B-cell lymphoma

Frequently asked questions

Code details

CodeC83.3
SystemICD10
Display nameDiffuse large B-cell lymphoma
ChapterNeoplasms (C00-D49)
BlockMalignant neoplasms of lymphoid, hematopoietic and related tissue

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

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.