Iodine-deficiency related multinodular (endemic) goiter

This code represents an enlarged thyroid gland characterized by multiple nodules, resulting from insufficient dietary iodine. This condition is endemic when it occurs in a specific geographic region where iodine deficiency is prevalent. The goiter develops as the thyroid attempts to compensate for inadequate hormone production due to lack of iodine.

Use this code when documentation clearly indicates a multinodular goiter directly attributed to iodine deficiency, particularly in patients from regions known for iodine scarcity. Supporting documentation should include clinical findings of thyroid enlargement, imaging reports confirming multinodularity, and a history or laboratory evidence of iodine deficiency.

• Differentiate from other types of goiter (e.g., simple goiter, toxic multinodular goiter) which have distinct codes.
• Ensure the documentation explicitly links the multinodular goiter to iodine deficiency; otherwise, a more general goiter code may be appropriate.
• Consider co-reporting with codes for iodine deficiency if separately documented and treated.