Is ICD-10-CM code E01 billable?

No, E01 (Iodine-deficiency related thyroid disorders and allied conditions) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code E01 belong to?

E01 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E01Non-billable

Iodine-deficiency related thyroid disorders and allied conditions

Endocrine, Nutritional and Metabolic Diseases·Disorders of thyroid gland (E00-E07)·category·FY 2026

Use a more specific code (4 billable)

E01.0Iodine-deficiency related diffuse (endemic) goiter E01.1Iodine-deficiency related multinodular (endemic) goiter E01.2Iodine-deficiency related (endemic) goiter, unspecified E01.8Other iodine-deficiency related thyroid disorders and allied conditions

CH4 Parent Instructions

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

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

Instructional Notes

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

congenital iodine-deficiency syndrome (E00.-)
subclinical iodine-deficiency hypothyroidism (E02)

Clinical Hierarchy

BillableHas subcodes

CH4Endocrine, nutritional and metabolic diseases (E00-E89)

E00-E07Disorders of thyroid gland (E00-E07)

E01Iodine-deficiency related thyroid disorders and allied conditionsNot billable

E01.0Iodine-deficiency related diffuse (endemic) goiterBillable

E01.1Iodine-deficiency related multinodular (endemic) goiterBillable

E01.2Iodine-deficiency related (endemic) goiter, unspecifiedBillable

E01.8Other iodine-deficiency related thyroid disorders and allied conditionsBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.