Table 1.
ICD-10 codes used in the study
| Diagnosis | ICD-10 code |
|---|---|
| Iodine deficiency-related thyroid disorders and allied conditions | E01 |
| Iodine deficiency-related diffuse (endemic) goiter | E01.0 |
| Iodine deficiency-related multinodular (endemic) goiter | E01.1 |
| Iodine deficiency-related (endemic) goiter, unspecified | E01.2 |
| Other iodine deficiency-related thyroid disorders | E01.8 |
| Other hypothyroidism | E03 |
| Other nontoxic goiter | E04 |
| Nontoxic diffuse goiter | E04.0 |
| Nontoxic single thyroid nodule | E04.1 |
| Nontoxic multinodular goiter | E04.2 |
| Other or unspecified specified nontoxic goiter | E04.8, E04.9 |
| Thyrotoxicosis [hyperthyroidism] | E05 |
| Thyrotoxicosis with diffuse goiter | E05.0 |
| Thyrotoxicosis with toxic single thyroid nodule | E05.1 |
| Thyrotoxicosis with toxic multinodular goiter | E05.2 |
| Thyrotoxicosis factitia | E05.4 |
| Other or unspecified thyrotoxicosis | E05.8, E05.9 |
| Thyroiditis | E06 |
| Autoimmune thyroiditis | E06.3 |
| Other disorders of thyroid | E07 |
| Benign neoplasm of thyroid gland | D34 |