G90A - Idiopathic peripheral autonomic neuropathy - nerve damage affecting automatic body functions

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 refers to a condition where the peripheral autonomic nervous system is damaged, but the cause is unknown (idiopathic). The autonomic nervous system controls automatic body functions like heart rate, blood pressure, digestion, and temperature regulation. When these nerves are damaged, it can affect how your body automatically manages these vital functions. Symptoms might include problems with blood pressure regulation (especially when standing up), digestive issues, temperature control problems, or heart rate irregularities. Since it's 'idiopathic,' doctors haven't been able to identify a specific underlying cause for the nerve damage.

Additional Information

This is a chronic condition that typically requires ongoing management. Treatment focuses on managing symptoms and maintaining quality of life since the underlying cause is unknown. Patients may need to work with multiple specialists depending on which body systems are affected.

Category

Neurological Disorders

Medical Specialty

Neurology

Expected Costs

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

What's Required Before This

  • Comprehensive neurological evaluation
  • Autonomic function testing
  • Rule out secondary causes

What to Expect After

  • Regular monitoring of autonomic functions
  • Symptom management
  • Lifestyle modifications
  • Possible medication management

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.

Want This Level of Detail on All Your Claims?

Get detailed explanations for every medical code on your Medicare bills. Currently supporting Medicare only.