L309 - Skin inflammation or irritation of unknown type

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 that you have dermatitis, which is a general term for inflammation of the skin that causes redness, swelling, itching, or other irritation. The 'unspecified' part means that your healthcare provider has identified that you have dermatitis but hasn't determined the specific type or cause. Dermatitis can result from allergies, irritants, infections, or other factors, and this code is used when the exact nature hasn't been identified or specified in your medical record.

Additional Information

This is a general diagnostic code used when dermatitis is present but the specific type has not been determined or documented. Further evaluation may be needed to identify the exact cause and appropriate treatment.

Category

Dermatological Conditions

Medical Specialty

Dermatology, Primary Care

Expected Costs

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

What's Required Before This

  • Clinical examination showing signs of skin inflammation

What to Expect After

  • May require follow-up to determine specific type of dermatitis
  • Potential allergy testing if allergic dermatitis suspected
  • Treatment based on symptoms and suspected causes

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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