C86.5 Angioimmunoblastic T-cell lymphoma

The ICD-10-CM code for Angioimmunoblastic T-cell lymphoma is C86.5 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

2: Neoplasms (C00-D49)

Section

C81-C96: Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

Category C86

22 codes (14 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to C86.5:

• Lymphadenopathy (generalized) › angioimmunoblastic, with dysproteinemia (AILD)
• Lymphoma (of) (malignant) › angioimmunoblastic T-cell

Inclusion Terms

• Angioimmunoblastic lymphadenopathy with dysproteinemia (AILD)

U.S. Hospital Utilization

• An estimated 1,745 U.S. inpatient stays in 2023 included C86.5 among the documented diagnoses.
• 580 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)