A6920 - Lyme disease diagnosis without specific details about the stage or complications

International Classification of Diseases

Last updated: 10/3/2025

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 you have been diagnosed with Lyme disease, but the specific stage or type hasn't been specified in your medical records. Lyme disease is an infection caused by bacteria transmitted through tick bites, most commonly from deer ticks. Symptoms can include fever, headache, fatigue, and a characteristic skin rash that looks like a bull's-eye. If left untreated, the infection can spread to joints, the heart, and the nervous system. The 'unspecified' designation means your healthcare provider has confirmed Lyme disease but hasn't documented whether it's early-stage, late-stage, or which specific complications may be present.

Additional Information

Early detection and treatment with antibiotics is highly effective. Most patients recover completely with appropriate treatment. Home health services may be needed for IV antibiotic administration in more severe cases or for patients who cannot take oral medications.

Category

Infectious Disease

Medical Specialty

Primary Care, Infectious Disease

Expected Costs

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

What's Required Before This

  • Tick exposure history
  • Clinical symptoms
  • Laboratory testing (often ELISA and Western blot)

What to Expect After

  • Antibiotic treatment monitoring
  • Symptom tracking
  • Follow-up appointments to assess treatment response
  • Monitoring for potential complications

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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