What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).
đź“‹Clinical overview
This ICD-10 code is commonly used when documentation describes thyroiditis or another inflammatory thyroid disorder. The most accurate code depends on whether the record identifies acute, subacute, autoimmune, drug-induced, chronic, or unspecified thyroid inflammation.
When is it used?
- May be used when a clinician documents thyroiditis in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
đź©şClinical context
When commonly used
- Primary-care, endocrinology, urgent-care, and inpatient workflows where thyroid pain, thyroid enlargement, inflammation, or abnormal thyroid-function testing is part of the active assessment.
- Coding workflows where the chart identifies the inflammatory pattern, mechanism, medication relationship, or transient thyrotoxic phase that changes final code specificity.
Common management context
- Evaluation often includes thyroid-function testing, inflammatory-marker review, thyroid antibody testing, symptom assessment for neck pain or thyrotoxic or hypothyroid features, and endocrine follow-up planning.
- Documentation usually becomes more specific when the chart identifies acute versus subacute versus autoimmune versus drug-induced thyroiditis, or clarifies another chronic inflammatory pattern.
- Specialist context already linked on this page includes Endocrinologist, General Physician.
🔍Key distinctions
Important notes
- This ICD-10 family captures inflammatory thyroid disease rather than noninflammatory hypothyroidism, thyrotoxicosis, thyroid nodules, or other endocrine thyroid conditions.
- Inflammatory pattern detail, such as acute, subacute, autoimmune, drug-induced, chronic with transient thyrotoxicosis, other chronic, or unspecified thyroiditis, drives final code specificity inside this family.
- This parent page groups multiple thyroiditis patterns, so the final billable code usually depends on whether the chart identifies acute, subacute, autoimmune, drug-induced, chronic, or unspecified thyroid inflammation more specifically.
- Documentation that describes thyroiditis is coded differently from hypothyroidism, thyrotoxicosis, thyroid nodule disease, or other thyroid disorders without documented inflammatory context.
Important exclusions
- postpartum thyroiditis (O90.5)
Related codes to consider
E06.0Acute thyroiditis
Related thyroiditis ICD-10 code; documentation often becomes more specific when the chart identifies acute versus subacute versus autoimmune versus drug-induced inflammation, or clarifies another chronic thyroiditis pattern.
E06.1Subacute thyroiditis
Related thyroiditis ICD-10 code; documentation often becomes more specific when the chart identifies acute versus subacute versus autoimmune versus drug-induced inflammation, or clarifies another chronic thyroiditis pattern.
E06.2Chronic thyroiditis with transient thyrotoxicosis
Related thyroiditis ICD-10 code; documentation often becomes more specific when the chart identifies acute versus subacute versus autoimmune versus drug-induced inflammation, or clarifies another chronic thyroiditis pattern.
E06.3Autoimmune thyroiditis
Related thyroiditis ICD-10 code; documentation often becomes more specific when the chart identifies acute versus subacute versus autoimmune versus drug-induced inflammation, or clarifies another chronic thyroiditis pattern.
Code hierarchy
chapter
4Endocrine, nutritional and metabolic diseases (E00-E89)
block
E00-E07Disorders of thyroid gland
currentE00-E07
Official coding notes
Excludes1 (do not code together)
- postpartum thyroiditis (O90.5)
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
EndocrinologistGeneral Physician
Related codes
Sibling codes
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
E06
Replacement codes
E06.0 — Acute thyroiditisE06.1 — Subacute thyroiditisE06.2 — Chronic thyroiditis with transient thyrotoxicosisE06.3 — Autoimmune thyroiditisE06.4 — Drug-induced thyroiditisE06.5 — Other chronic thyroiditisE06.9 — Thyroiditis, unspecified
Common synonyms
Thyroiditis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.