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ICD Hub / Endocrine, nutritional or metabolic diseases (E00–E89) / 5A00.11 - Iodine-deficiency-related multinodular goitre
ICD-11

ICD-11 Codes
for 5A00.11 - Iodine-deficiency-related multinodular goitre
Teodor Jurukovski January 1, 1970
Fact checked by: Teodor Jurukovski
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Iodine-deficiency-related multinodular goitre, identified by the ICD-11 code 5A00.11, is a condition characterized by the enlargement of the thyroid gland accompanied by the development of multiple nodules. This specific classification highlights that the primary underlying cause is a chronic insufficiency of iodine in the diet. In regions where iodine intake is consistently low, this condition is often referred to as endemic multinodular goitre. It represents a significant adaptation of the thyroid gland to insufficient iodine, leading to structural changes.

Causes and Risk Factors for Goitre

The principal etiological factor for Iodine-deficiency-related multinodular goitre (ICD-11 code 5A00.11) is a persistent lack of adequate iodine in a person's diet. When the body does not receive enough iodine, the thyroid gland attempts to compensate by increasing its cellular mass and developing nodules in an effort to enhance hormone production. Prolonged stimulation by Thyroid Stimulating Hormone (TSH) is a key mechanism in this process, contributing to both the diffuse enlargement and subsequent nodularity of the gland over time. While iodine deficiency is the defining cause for this code, genetic predispositions can also influence an individual's susceptibility to developing goitre.

Recognizing the Symptoms of Multinodular Goitre

Individuals with Iodine-deficiency-related multinodular goitre may present with a noticeable swelling or lump located at the front of the neck. Other common symptoms can include a sensation of tightness in the throat, hoarseness, and difficulties with swallowing or breathing, particularly if the goitre grows large enough to exert pressure on adjacent anatomical structures like the trachea or oesophagus. It is important to note that many patients with this condition maintain normal thyroid hormone levels, a state known as euthyroidism, despite the visible enlargement and nodularity of the thyroid gland. The diagnostic process for Iodine-deficiency-related multinodular goitre typically begins with a thorough physical examination to assess the size of the thyroid gland and palpate for the presence and characteristics of nodules. Thyroid blood tests are essential to measure levels of TSH, T4, and T3, which help determine thyroid function. Imaging studies, most commonly a thyroid ultrasound, are crucial for accurately evaluating the size, number, and morphology of the nodules. Depending on the findings, further investigations such as a thyroid uptake scan or a fine-needle aspiration biopsy may be considered to assess nodule function and rule out malignancy.

Synonyms and Alternative Terms

Iodine-deficiency-related multinodular goitre is known by several other terms, often reflecting its cause or prevalence. It is frequently referred to as endemic multinodular goitre, especially when occurring in geographical areas with widespread iodine deficiency. Other descriptive synonyms include iodine-deficient multinodular thyroid or simply multinodular goitre when the link to iodine deficiency has been established as the primary cause. These terms are used interchangeably in clinical and research contexts.

Documentation and Coding for ICD-11 Code 5A00.11

Accurate medical documentation and precise coding are vital for effective patient care, billing, and statistical reporting. For Iodine-deficiency-related multinodular goitre, the official ICD-11 code is 5A00.11. Healthcare providers should ensure their clinical notes clearly specify the diagnosis and its association with iodine deficiency. Using the ICD-11 code for Iodine-deficiency-related multinodular goitre ensures that the condition is correctly identified for billing purposes and contributes to comprehensive patient health records. This ICD-11 code is billable and reportable.

Frequently asked questions

What is the ICD-11 classification for Iodine-deficiency-related multinodular goitre?
The ICD-11 classification for Iodine-deficiency-related multinodular goitre is 5A00.11. This code is located within Chapter 5: Endocrine, nutritional or metabolic diseases.
How is Iodine-deficiency-related multinodular goitre defined within ICD-11?
ICD-11 classifies Iodine-deficiency-related multinodular goitre under the code 5A00.11. This category describes conditions of aberrant thyroid function resulting from iodine deficiency that manifest as a multinodular goitre.
When should the ICD-11 code 5A00.11 be used instead of a more general code?
The ICD-11 code 5A00.11 is used for Iodine-deficiency-related multinodular goitre. This specific code is applied when the condition is documented as a multinodular goitre caused by iodine deficiency. For unspecified iodine-deficiency-related thyroid disorders, the code 5A00.1Z is used.
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