E06.0 Acute thyroiditis

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Abscess of thyroid
• Pyogenic thyroiditis
• Suppurative thyroiditis

Use additional code

• code (B95-B97) to identify infectious agent.

Applies from E06 Thyroiditis

Excludes1 (never code together)

• postpartum thyroiditis (O90.5)

Risk adjustment (HCC)

• RxHCC V08: HCC 44 — Thyroid Disorders

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Approximate ICD-9-CM (GEMs)

• 245.0 Acute thyroiditis

Code annotations containing back-references to E06.0

Back-references to E06

• Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")

Diagnosis Index entries for E06.0

• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › thyroid (gland)
• Suppuration, suppurative › thyroid (gland)
• Thyroiditis › acute (nonsuppurative) (pyogenic) (suppurative)
• Thyroiditis › pyogenic
• Thyroiditis › suppurative

Nearby codes

• E06 Thyroiditis
• E06.0 Acute thyroiditis (this code)
• E06.1 Subacute thyroiditis
• E06.2 Chronic thyroiditis with transient thyrotoxicosis
• E06.3 Autoimmune thyroiditis
• E06.4 Drug-induced thyroiditis
• E06.5 Other chronic thyroiditis