Decoding Thyroid Eye Disease: Understanding The ICD-10 Codes

What is Thyroid Eye Disease ICD-10?

Thyroid Eye Disease, also known as Graves’ Ophthalmopathy or Thyroid-Associated Orbitopathy, is an autoimmune condition that affects the muscles and tissues around the eyes. It is commonly associated with an overactive thyroid gland (hyperthyroidism) caused by Graves’ disease.

Code Information

Endocrine, Nutritional, and Metabolic Diseases: (ICD--CM Chapter
Endocrine, Nutritional, and Metabolic Diseases: (ICD–CM Chapter

The ICD-10 code for Thyroid Eye Disease is H05.20. This code is used to classify the condition in medical records and for billing purposes. It falls under the broader category of Diseases of the Orbit, and the specific code H05.20 indicates the unilateral involvement of the orbit.

Diagnostic Related Groups (MS-DRG)

ICD--CM Diagnosis Code E
ICD–CM Diagnosis Code E

Thyroid Eye Disease is classified under MS-DRG 124 – Other Disorders of the Eye with MCC (Major Complications or Comorbidities). This means that the condition is considered to have a high severity level and may require extensive medical treatment.

Convert to ICD-9 Code

In the previous coding system, Thyroid Eye Disease was classified under ICD-9 code 242.0. However, with the transition to ICD-10, the code H05.20 is now used to specify the condition.

Code History

The ICD-10 code for Thyroid Eye Disease, H05.20, was introduced in 2015 as part of the implementation of the new coding system. It replaced the older ICD-9 code 242.0 to provide more detailed and accurate classification of the condition.

Approximate Synonyms

Other terms used to describe Thyroid Eye Disease include Graves’ Ophthalmopathy, Thyroid-Associated Orbitopathy, and Thyroid Eye Disorder. These synonyms are used interchangeably in medical literature and documentation.

Clinical Information

Thyroid Eye Disease is characterized by inflammation and swelling of the tissues around the eyes, leading to symptoms such as bulging eyes (exophthalmos), double vision, and eye pain. The condition can also cause redness, irritation, and difficulty closing the eyelids.


The exact cause of Thyroid Eye Disease is not fully understood, but it is believed to be related to an autoimmune reaction against the tissues in the orbit. It is often associated with Graves’ disease, a condition where the immune system mistakenly attacks the thyroid gland.


Common symptoms of Thyroid Eye Disease include bulging eyes, eye pain, double vision, redness, swelling, and difficulty moving the eyes. In severe cases, the condition can lead to vision loss and permanent damage to the optic nerve.


Diagnosing Thyroid Eye Disease typically involves a physical examination of the eyes, including measurements of eye protrusion and visual acuity tests. Blood tests may also be conducted to assess thyroid function and check for specific antibodies associated with autoimmune diseases.


Treatment for Thyroid Eye Disease aims to manage symptoms, reduce inflammation, and improve eye function. Options may include medications to control thyroid levels, corticosteroids to reduce swelling, and surgical interventions such as orbital decompression or eye muscle surgery.


Thyroid Eye Disease is a complex condition that requires careful management and treatment to prevent complications and preserve vision. By understanding the ICD-10 code, diagnostic criteria, and treatment options, healthcare providers can effectively address the needs of patients with this challenging condition.


Q: Is Thyroid Eye Disease the same as Graves’ disease?

A: Thyroid Eye Disease is often associated with Graves’ disease, but they are separate conditions with distinct symptoms and treatment approaches.

Q: Can Thyroid Eye Disease lead to permanent vision loss?

A: In severe cases, Thyroid Eye Disease can cause vision impairment and damage to the optic nerve if not properly managed.

Q: What are the risk factors for developing Thyroid Eye Disease?

A: Risk factors include a history of autoimmune disorders, family history of thyroid disease, and smoking.

Q: How is Thyroid Eye Disease treated?

A: Treatment may involve medications, surgery, or other interventions to manage symptoms and prevent complications.

Q: Is Thyroid Eye Disease curable?

A: While there is no cure for Thyroid Eye Disease, proper

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