DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

E06 Thyroiditis

  • Header · not billable

E06 is not billable. The category heads 7 billable codes in FY2027: the 7 codes directly below it.

Index → code

  • Thyroiditis → E06.9
  • Lymphadenoid goiter → E06.3
  • Ligneous thyroiditis → E06.5

Where it sits

  1. Chapter 4 Endocrine, nutritional and metabolic diseases (E00-E89)
  2. E00-E07 Disorders of thyroid gland (E00-E07)
  3. E06 Thyroiditis
Billable codes
7
Subdivisions
7
CC / MCC codes
1 / 0
HCC V28 codes
0
New FY2027
0
Index entries
48

Codes in E06

  1. E06.0
    Acute thyroiditis
    BillableCC
    Inclusion terms 3, Use additional code 1

    Inclusion terms

    • Abscess of thyroid
    • Pyogenic thyroiditis
    • Suppurative thyroiditis

    Use additional code

    • code (B95-B97) to identify infectious agent. B95 B97
  2. E06.1
    Subacute thyroiditis
    Billable
    Inclusion terms 5, Excludes1 1

    Inclusion terms

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

    Excludes1

    • autoimmune thyroiditis (E06.3) E06.3
  3. E06.2
    Chronic thyroiditis with transient thyrotoxicosis
    Billable
    Excludes1 1

    Excludes1

    • autoimmune thyroiditis (E06.3) E06.3
  4. E06.3
    Autoimmune thyroiditis
    Billable
    Inclusion terms 5

    Inclusion terms

    • Hashimoto's thyroiditis
    • Hashitoxicosis (transient)
    • Lymphadenoid goiter
    • Lymphocytic thyroiditis
    • Struma lymphomatosa
  5. E06.4
    Drug-induced thyroiditis
    Billable
    Use additional code 1

    Use additional code

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) T36 T50
  6. E06.5
    Other chronic thyroiditis
    Billable
    Inclusion terms 4

    Inclusion terms

    • Chronic fibrous thyroiditis
    • Chronic thyroiditis NOS
    • Ligneous thyroiditis
    • Riedel thyroiditis
  7. E06.9
    Thyroiditis, unspecified
    Billable

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At E06

Excludes1

  • postpartum thyroiditis (O90.5) O90.5

Notes that also apply

Chapter 4 instructions (Notes 1, Excludes1 1): printed on the chapter 4 page.

Index entries

  • Hashimoto's disease or thyroiditis → E06.3
  • Hashitoxicosis (transient) → E06.3
  • Lymphadenoid goiter → E06.3
  • Ligneous thyroiditis → E06.5
  • Thyroiditis → E06.9
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)thyroid (gland) → E06.0
  • Suppuration, suppurativethyroid (gland) → E06.0
  • Thyroiditisacute (nonsuppurative) (pyogenic) (suppurative) → E06.0
  • Thyroiditispyogenic → E06.0
  • Thyroiditissuppurative → E06.0
  • De Quervain'sthyroiditis (subacute granulomatous thyroiditis) → E06.1
  • Quervain's diseasethyroid → E06.1
  • Thyroiditisde Quervain's → E06.1
  • Thyroiditisgiant-cell (follicular) → E06.1
  • Thyroiditisgranulomatous (de Quervain) (subacute) → E06.1
  • Thyroiditisnonsuppurative → E06.1
  • Thyroiditispseudotuberculous → E06.1
  • Thyroiditissubacute (granulomatous) → E06.1
  • Thyroiditisviral → E06.1
  • Thyrotoxicosis (recurrent)transient with chronic thyroiditis → E06.2
  • Autoimmunethyroiditis → E06.3
  • Disease, diseasedHashimoto's (struma lymphomatosa) → E06.3
  • Goiter (plunging) (substernal)lymphadenoid → E06.3
  • StrumaHashimoto → E06.3
  • Strumalymphomatosa → E06.3
  • Thyroiditisautoimmune → E06.3
  • ThyroiditisHashimoto's (struma lymphomatosa) → E06.3
  • Thyroiditislymphocytic (chronic) → E06.3
  • Thyroiditislymphoid → E06.3
  • Thyroiditislymphomatous → E06.3
  • Thyroiditisdrug-induced → E06.4
  • Thyroiditisiatrogenic → E06.4
  • Thyroiditisradiation → E06.4
  • Riedel'sstruma, thyroiditis or disease → E06.5
  • StrumaRiedel's → E06.5
  • Thyroiditischronic (nonspecific) (sclerosing) → E06.5
  • Thyroiditisfibrous (chronic) → E06.5
  • Thyroiditisligneous → E06.5
  • ThyroiditisRiedel's → E06.5
  • Thyroiditiswoody → E06.5

8 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

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