MCMedicalCodingSoftware
E06.5

E06.5: Other chronic thyroiditis

Billable / specific codeICD-10-CM

E06.5 is a billable, specific ICD-10-CM code for other chronic thyroiditis. It is valid for submission on a claim.

Check E06.5 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Chronic fibrous thyroiditis
  • Chronic thyroiditis NOS
  • Ligneous thyroiditis
  • Riedel thyroiditis

Excludes1 inherited from the categories above E06.5

A category’s note binds every code beneath it.

Written on E06: Thyroiditis

  • postpartum thyroiditis (O90.5)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E06.5 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck
  • A57657Billing and Coding: Sedimentation Rate, Erythrocyte

Alphabetic index entries that lead here

  • Ligneous thyroiditis
  • Riedel's›struma, thyroiditis or disease
  • Struma›Riedel's
  • Thyroiditis›chronic(nonspecific) (sclerosing)
  • Thyroiditis›fibrous(chronic)
  • Thyroiditis›ligneous
  • Thyroiditis›Riedel's
  • Thyroiditis›woody
  • Thyroiditis›chronic›fibrous

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E06

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.