Hypothyroidism ICD-10-CM Codes

Understand the ICD-10 codes used for hypothyroidism, their relevance in medical billing, and how they represent various forms of this thyroid condition.

By Chloe Smith on Feb 29, 2024.

Fact Checked by Ericka Pingol.

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Hypothyroidism ICD-10-CM Codes

What ICD-10 Codes are Used for Hypothyroidism 

Hypothyroidism, a medical condition characterized by an underactive thyroid gland, affects numerous individuals worldwide. The thyroid gland plays a crucial role in our body, influencing the function of the body's most important organs, including the heart, brain, liver, and kidneys. When it doesn't produce enough thyroid hormones, symptoms such as fatigue, weight gain, depression, and a slowed heart rate can manifest. Accurate documentation and coding of diseases like hypothyroidism are pivotal for appropriate patient care, management, and billing. This is where ICD-10-CM (International Classification of Diseases, 10th Revision, Clinical Modification) codes come into play.

Here are some commonly used ICD-10 codes for Hypothyroidism with their corresponding clinical descriptions:

  1. E03.9 - Hypothyroidism, Unspecified: This code is utilized when the hypothyroidism is primary but lacks a specific documented cause.
  2. E03.3 - Postinfectious Hypothyroidism: This code applies when hypothyroidism occurs following an infection that impacts the thyroid gland.
  3. E03.4 - Atrophy of Thyroid (Acquired): This code is designated for hypothyroidism resulting from a decrease in size or wasting away of the thyroid gland.
  4. E03.5 - Myxedema Coma: A severe, life-threatening complication of hypothyroidism marked by mental status changes and hypothermia, uses this code.
  5. E03.8 - Other Specified Hypothyroidism: This code is employed when the hypothyroidism results from a specified cause not listed above.
  6. E07.9 - Disorder of Thyroid, Unspecified: If there is a thyroid disorder, but its type isn't specified, this code is used.

A deeper dive into Hypothyroidism ICD Codes reveals their critical role in ensuring an accurate diagnosis and treatment and facilitating efficient medical billing and coding procedures. Applying these codes guarantees appropriate reimbursement for provided medical services while maintaining a precise and consistent record of the patient's medical history. 

Which Hypothyroidism ICD codes are Billable

In the realm of medical billing and coding, "billable" codes are those that can be used to specify a medical diagnosis for reimbursement purposes. Here are some billable ICD-10 codes for Hypothyroidism:

  1. E03.9 - Hypothyroidism, Unspecified: This billable code is used to diagnose unspecified hypothyroidism.
  2. E03.3 - Postinfectious Hypothyroidism: This is also a billable code used for healthcare diagnosis reimbursement when hypothyroidism occurs after an infection.
  3. E03.4 - Atrophy of Thyroid (Acquired): This billable code is used for hypothyroidism caused by the shrinking or wasting away of the thyroid gland.
  4. E03.5 - Myxedema Coma: This is a billable code used for the severe and life-threatening complication of hypothyroidism known as myxedema coma.
  5. E03.8 - Other Specified Hypothyroidism: This billable code is used when the hypothyroidism is due to a specified cause not listed above.
  6. E07.9 - Disorder of Thyroid, Unspecified: This is a billable code used when there is a thyroid disorder, but it isn't specified as to what type.

While these codes are generally billable, the specifics may vary based on different insurance companies' policies and guidelines. Always consult a certified medical coder or the relevant insurance provider for the most accurate information.

Clinical Information

  • Hypothyroidism is a medical disorder characterized by the inadequate production of thyroid hormones by the thyroid gland.
  • The hormones thyroxine (T4) and triiodothyronine (T3) regulate the body's metabolic rate, impacting nearly every organ system.
  • Symptoms of hypothyroidism can vary widely among individuals, often depending on the severity of the hormone deficiency.
  • Common symptoms include persistent fatigue, unexplained weight gain, increased sensitivity to colds, depression, dry and itchy skin, and constipation.
  • As the condition progresses, symptoms may become more severe, potentially leading to a decreased sense of taste and smell, puffiness around the eyes, slowed speech, hair thinning or loss, and a decreased heart rate.
  • Myxedema coma is a severe form of hypothyroidism characterized by low body temperature and unconsciousness, requiring immediate medical intervention.
  • Causes of hypothyroidism include autoimmune diseases like Hashimoto's thyroiditis, surgical removal of the thyroid gland, radiation treatment to the neck area, certain medications, and severe iodine deficiency.
  • Diagnosis typically involves a physical examination, a detailed review of the patient's medical history, and blood tests measuring thyroid-stimulating hormone (TSH) levels and sometimes thyroxine (T4).
  • Treatment generally involves daily oral intake of synthetic thyroid hormone levothyroxine, which helps normalize hormonal levels and reverse symptoms of hypothyroidism.
  • Regular follow-up appointments with a healthcare provider are necessary to monitor the patient's response to treatment and adjust the medication dosage.
  • Hypothyroidism is a chronic condition that requires lifelong management. However, individuals can lead normal, healthy lives with consistent treatment and appropriate medical care.
  • Lifestyle modifications, such as a balanced diet and regular exercise, can aid in managing the condition and improving the quality of life.

Synonyms Include

  • Underactive thyroid
  • Low thyroid
  • Thyroid insufficiency
  • Thyroid hormone deficiency
  • Thyroid hypofunction
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Commonly asked questions

When to use a Hypothyroidism ICD code?

A hypothyroidism ICD code is used in medical billing and coding to classify diagnoses related to hypothyroidism. It's used when a healthcare professional diagnoses a patient with hypothyroidism.

Are Hypothyroidism diagnoses billable?

Yes, hypothyroidism diagnoses are billable. The specific ICD code for hypothyroidism is used to bill insurance companies for the condition's diagnosis, treatment, and management.

What are the common treatments for Hypothyroidism Diagnosis Codes?

The common treatment for hypothyroidism is hormone replacement therapy, typically using levothyroxine. This treatment aims to restore the balance of thyroid hormones in the body. The specific treatment plan may vary based on the patient's age, overall health, and the severity of the condition.

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