2027 ICD-10-CM Diagnosis Code E06Thyroiditis

ICD-10-CM Codes›E00–E89›E00-E07›E06

ICD-10-CM E06
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

E06 is a non-billable ICD-10-CM category code for thyroiditis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E06.0, E06.1, E06.2, and E06.3.

Code Identity

ICD-10-CM Code
E06
Billable Status
No — Non-Billable Category
Code Describes
Thyroiditis
Short Description
Thyroiditis
Same as the full description in the CMS dataset.
Chapter
E00-E07
Disorders of thyroid gland

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE00-E07Disorders of thyroid gland
CategoryE06Thyroiditis
This CodeE06Thyroiditis

Specific Coding for ThyroiditisOverview

Non-specific codes like E06 require more characters. Use one of these billable codes instead:

  • Use E06.0 for Acute thyroiditis

  • Use E06.1 for Subacute thyroiditis

  • Use E06.2 for Chronic thyroiditis with transient thyrotoxicosis

  • Use E06.3 for Autoimmune thyroiditis

  • Use E06.4 for Drug-induced thyroiditis

  • Use E06.5 for Other chronic thyroiditis

  • Use E06.9 for Thyroiditis, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to E06: its own notes plus those printed at Chapter 4. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On E06 itself
  • postpartum thyroiditis (O90.5)
From Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseases applies to 973 codes
  • transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Notes

General instructions on how these codes are used.

From Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseases applies to 973 codes
  • All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name E06, its category, or a range that includes it.

Applicable To 1

These notes mention E06.

  • Z83.4 Family history of other endocrine, nutritional and metabolic diseases
    Conditions classifiable to E00-E07, E15-E88 names E00-E07, which includes this code

Code First 1

These codes say to code first a condition named in the note, and E06 is one of the conditions named.

  • G63 Polyneuropathy in diseases classified elsewhere
    endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34) names E00-E07, which includes this code

Clinical InformationClinical

  • Thyroiditis

    inflammatory diseases of the thyroid gland. thyroiditis can be classified into acute (thyroiditis, suppurative), subacute (granulomatous and lymphocytic), chronic fibrous (riedel's), chronic lymphocytic (hashimoto disease), transient (postpartum thyroiditis), and other autoimmune thyroiditis subtypes.

Patient EducationClinical

Thyroid Diseases

Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect your breathing, heart rate, weight, digestion, and moods.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About E06Overview

What is the ICD-10 code for thyroiditis?

E06 is the ICD-10-CM category for thyroiditis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is E06 (Thyroiditis) a billable code?

No. This is a category header that groups the codes for thyroiditis, and headers cannot be submitted on claims. Claims for thyroiditis need a more specific code from this category, such as E06.0, E06.1, and E06.2.

Can E06 be reported with O90.5?

Not as a rule. The Excludes1 note on E06 lists "postpartum thyroiditis (O90.5)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).