E01 – Iodine-deficiency related thyroid disorders and allied conditions

ICD-10-CM 2027 diagnosis code · Disorders of thyroid gland

Non-billable header

ICD-10-CM code E01
Code
E01 (claims format: E01)
Description
Iodine-deficiency related thyroid disorders and allied conditions
Short description
Iodine-deficiency related thyroid disorders and allied cond
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
4. Endocrine, nutritional and metabolic diseases (E00-E89)
Block
E00-E07 Disorders of thyroid gland

Billable codes under E01

E01 is a header code and cannot be used on claims. Choose the most specific code:

Notes for E01

Excludes1 (not coded here):
  • congenital iodine-deficiency syndrome (E00.-)
  • subclinical iodine-deficiency hypothyroidism (E02)

Frequently asked questions

What is ICD-10 code E01?

E01 is the ICD-10-CM code for iodine-deficiency related thyroid disorders and allied conditions, in the block E00-E07 (Disorders of thyroid gland).

Is E01 a billable code?

No. E01 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.