ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesC82.91

C82.91

Billable

Follicular lymphoma, unspecified, lymph nodes of head, face, and neck

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 C82.91 is a billable code used to indicate a diagnosis of follicular lymphoma, unspecified, lymph nodes of head, face, and neck.

Key Diagnostic Point:

Follicular lymphoma is a type of non-Hodgkin lymphoma characterized by the proliferation of follicle center (germinal center) B-cells. It is typically indolent but can transform into a more aggressive form. The unspecified designation indicates that the specific subtype or characteristics of the lymphoma have not been detailed. This code specifically pertains to cases where the lymph nodes involved are located in the head, face, and neck regions. Patients may present with painless lymphadenopathy, and the disease can be associated with B-symptoms such as fever, night sweats, and weight loss. Diagnosis is often confirmed through biopsy and histological examination, which reveals follicular architecture. Staging is crucial for treatment planning and involves imaging studies to assess the extent of disease spread. Treatment options may include watchful waiting, chemotherapy, immunotherapy, or radiation therapy, depending on the stage and symptoms. Regular follow-up is essential to monitor for disease progression or transformation.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and symptoms among patients
  • Need for precise documentation of lymph node involvement
  • Differentiation from other types of lymphomas
  • Potential for transformation to aggressive lymphoma

Audit Risk Factors

  • Inadequate documentation of lymph node locations
  • Failure to document B-symptoms
  • Misclassification of lymphoma subtype
  • Inconsistent staging information

Specialty Focus

Medical Specialties

Hematology/Oncology

Documentation Requirements

Detailed clinical notes on symptoms, staging, and treatment plans.

Common Clinical Scenarios

Patients presenting with lymphadenopathy, B-symptoms, or requiring treatment for follicular lymphoma.

Billing Considerations

Ensure accurate staging and documentation of treatment response.

Pathology

Documentation Requirements

Histopathological reports confirming diagnosis and subtype.

Common Clinical Scenarios

Biopsy specimens from lymph nodes showing follicular lymphoma characteristics.

Billing Considerations

Clear documentation of histological findings is crucial for accurate coding.

Coding Guidelines

Inclusion Criteria

Use C82.91 When
  • Follow ICD
  • CM guidelines for coding neoplasms, ensuring accurate documentation of the site and type of lymphoma
  • Include staging information when available

Exclusion Criteria

Do NOT use C82.91 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

85025CPT Code

Complete blood count (CBC) with differential

Clinical Scenario

Used to monitor blood counts in patients undergoing treatment for lymphoma.

Documentation Requirements

Document the reason for the CBC and any relevant findings.

Specialty Considerations

Hematology specialists should ensure comprehensive lab results are included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of lymphomas, improving data accuracy and treatment tracking. C82.91 provides a clear designation for unspecified follicular lymphoma, aiding in epidemiological studies and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of lymphomas, improving data accuracy and treatment tracking. C82.91 provides a clear designation for unspecified follicular lymphoma, aiding in epidemiological studies and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of lymphomas, improving data accuracy and treatment tracking. C82.91 provides a clear designation for unspecified follicular lymphoma, aiding in epidemiological studies and treatment outcomes.

Resources

Clinical References

  • •
    National Comprehensive Cancer Network (NCCN) Guidelines

Coding & Billing References

  • •
    National Comprehensive Cancer Network (NCCN) Guidelines

Frequently Asked Questions

What are the common symptoms of follicular lymphoma?

Common symptoms include painless swelling of lymph nodes, fever, night sweats, and unexplained weight loss, known as B-symptoms.