Chapter 4

E00–E89: Endocrine, Nutritional and Metabolic Diseases

Endocrine, Nutritional and Metabolic Diseases diagnostic classification updated for 2026.

Chapter Instructions

Excludes1(Not coded here. Use a different code.)

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

All Codes Billable Only

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Internal Codes

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E00|
Congenital iodine-deficiency syndrome
E00.0|
Congenital iodine-deficiency syndrome, neurological type
E00.1|
Congenital iodine-deficiency syndrome, myxedematous type
E00.2|
Congenital iodine-deficiency syndrome, mixed type
E00.9|
Congenital iodine-deficiency syndrome, unspecified
E01|
Iodine-deficiency related thyroid disorders and allied conditions
E01.0|
Iodine-deficiency related diffuse (endemic) goiter
E01.1|
Iodine-deficiency related multinodular (endemic) goiter
E01.2|
Iodine-deficiency related (endemic) goiter, unspecified
E01.8|
Other iodine-deficiency related thyroid disorders and allied conditions
E02|
Subclinical iodine-deficiency hypothyroidism
E03|
Other hypothyroidism
E03.0|
Congenital hypothyroidism with diffuse goiter
E03.1|
Congenital hypothyroidism without goiter
E03.2|
Hypothyroidism due to medicaments and other exogenous substances
E03.3|
Postinfectious hypothyroidism
E03.4|
Atrophy of thyroid (acquired)
E03.5|
Myxedema coma
E03.8|
Other specified hypothyroidism
E03.9|
Hypothyroidism, unspecified
E04|
Other nontoxic goiter
E04.0|
Nontoxic diffuse goiter
E04.1|
Nontoxic single thyroid nodule
E04.2|
Nontoxic multinodular goiter
E04.8|
Other specified nontoxic goiter
E04.9|
Nontoxic goiter, unspecified
E05|
Thyrotoxicosis [hyperthyroidism]
E05.0|
Thyrotoxicosis with diffuse goiter
E05.00|
Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm
E05.01|
Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm
E05.1|
Thyrotoxicosis with toxic single thyroid nodule
E05.10|
Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm
E05.11|
Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm
E05.2|
Thyrotoxicosis with toxic multinodular goiter
E05.20|
Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm
E05.21|
Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm
E05.3|
Thyrotoxicosis from ectopic thyroid tissue
E05.30|
Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis or storm
E05.31|
Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis or storm
E05.4|
Thyrotoxicosis factitia
E05.40|
Thyrotoxicosis factitia without thyrotoxic crisis or storm
E05.41|
Thyrotoxicosis factitia with thyrotoxic crisis or storm
E05.8|
Other thyrotoxicosis
E05.80|
Other thyrotoxicosis without thyrotoxic crisis or storm
E05.81|
Other thyrotoxicosis with thyrotoxic crisis or storm
E05.9|
Thyrotoxicosis, unspecified
E05.90|
Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
E05.91|
Thyrotoxicosis, unspecified with thyrotoxic crisis or storm
E06|
Thyroiditis
E06.0|
Acute thyroiditis

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