Thyroid Disease ICD-10-CM Codes

Thyroid Disease ICD-10-CM Codes

Learn about thyroid disease ICD codes for billing and coding. Get valuable clinical information for your practice in this guide.

By Emma Hainsworth on Jul 16, 2025.

Fact Checked by RJ Gumban.

Use Code

What thyroid disease ICD codes can I use?

Here are thyroid disease ICD-10 codes you can utilize for your patients:

  • E05.00 - Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm

This code is used for patients with thyrotoxicosis accompanied by diffuse goiter but without complications like thyrotoxic crisis or storm.

  • E05.01 - Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm

Similar to Item 1, this code indicates the presence of thyrotoxicosis with diffuse goiter along with thyrotoxic crisis or storm.

  • E05.10 - Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm

This code is assigned to patients confirmed to have thyrotoxicosis along with a toxic single thyroid nodule but without complications like thyrotoxic crisis or storm.

  • E05.11 - Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm

Similar to Item 3, this code indicates the presence of thyrotoxicosis with a toxic single thyroid nodule along with thyrotoxic crisis or storm.

  • E03.9 - Hypothyroidism, unspecified

This code is used for patients diagnosed with hypothyroidism, where the specific cause or type is not specified. Note that other hypothyroidism ICD-10 codes are available, so if the specific type has been determined, it is advisable to use a more specific code.

  • E89.0 - Postprocedural hypothyroidism

This code is used for patients who develop hypothyroidism after a certain procedure or intervention.

Are these thyroid disease ICD codes billable?

Yes. All the thyroid disease-related ICD-10 codes we listed above are valid and billable.

Clinical information

  • Thyroid disease is a broad term used by healthcare providers and professionals to describe a medical condition that disrupts the thyroid's ability to produce the necessary amount of hormones for normal bodily functions.
  • When the thyroid produces an excess of hormones, it is known as hyperthyroidism or thyrotoxicosis. These conditions can lead to accelerated energy expenditure, increased fatigue, and heightened anxiety or nervousness, even in the absence of a cause for concern.
  • It's important to note that thyroid nodules, which are typically benign, can develop as a result of excessive thyroid hormone production.
  • Conversely, if the thyroid produces an insufficient amount of hormones, it is referred to as hypothyroidism. This type of thyroid disease often leads to fatigue, sensitivity to cold temperatures, and a slowed metabolism, making weight gain more likely.
  • In severe cases, it can even result in a coma.

Synonyms include:

  • Thyrotoxicosis due to Graves' disease
  • Thyrotoxic crisis
  • Hyperthyroidism
  • Hypothyroid myopathy
  • Hypothyroid obesity
  • Hypothyroidism
  • Hypothyroidism due to infiltrative disease

Related ICDs

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