E06.1 – Subacute thyroiditis

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

Billable code

ICD-10-CM code E06.1

Code: E06.1 (claims format: E061)
Description: Subacute thyroiditis
Billable: Yes – valid for HIPAA-covered transactions
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
Parent codes: E06

Notes for E06.1

Applicable to:

de Quervain thyroiditis
Giant-cell thyroiditis
Granulomatous thyroiditis
Nonsuppurative thyroiditis
Viral thyroiditis

Excludes1 (not coded here):

autoimmune thyroiditis (E06.3)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

E06 – Thyroiditis

Excludes1 (not coded here):

postpartum thyroiditis (O90.5)

Index terms for E06.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in E06

E06.0 – Acute thyroiditisBillable
E06.2 – Chronic thyroiditis with transient thyrotoxicosisBillable
E06.3 – Autoimmune thyroiditisBillable
E06.4 – Drug-induced thyroiditisBillable
E06.5 – Other chronic thyroiditisBillable
E06.9 – Thyroiditis, unspecifiedBillable

Frequently asked questions

What is ICD-10 code E06.1?

E06.1 is the ICD-10-CM code for subacute thyroiditis, in the block E00-E07 (Disorders of thyroid gland).

Is E06.1 a billable code?

Yes. E06.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does E06.1 belong to?

It belongs to category E06 – Thyroiditis.

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.