R590 - Enlarged lymph nodes in a specific area of the body

International Classification of Diseases

Last updated: 6/19/2026

What is a ICD-10 Code?

ICD-10 (International Classification of Diseases, 10th Revision) codes are used to classify and code all diagnoses, symptoms, and procedures recorded in association with hospital care. These codes provide a standardized way to track health conditions and their treatment outcomes.

Detailed Description

This code indicates that lymph nodes (small, bean-shaped structures that are part of your immune system) have become enlarged or swollen in a localized area of your body. Lymph nodes can become enlarged for various reasons, including infections, immune responses, or other medical conditions. The enlargement is confined to a specific region rather than being widespread throughout the body.

Additional Information

Enlarged lymph nodes are a common finding and can occur due to many benign causes. Your healthcare provider will determine if further evaluation is needed based on your specific situation.

Category

General symptoms and signs

Medical Specialty

Primary Care/Internal Medicine

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • Physical examination
  • Medical history review

What to Expect After

  • Monitor for changes in size
  • Follow-up examination as directed by healthcare provider
  • Additional testing if symptoms persist or worsen

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

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