ICD-10 E06.5
Billable / SpecificOther chronic thyroiditis
About ICD-10-CM E06.5
ICD-10-CM code E06.5 represents Other chronic thyroiditis. This is a billable/specific code in the Endocrine, Nutritional, and Metabolic chapter (block E06). The 2026 edition of ICD-10-CM E06.5 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under E06.5. Per CMS ICD-10-CM Tabular 2026.
- Chronic fibrous thyroiditis
- Chronic thyroiditis NOS
- Ligneous thyroiditis
- Riedel thyroiditis
Medicare LCD Coverage for E06.5
Local Coverage Determinations (LCDs) from CMS MACs that list E06.5 as a covered diagnosis.
Showing top 10 of 30 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing E06.5.
2 Medicare
CPT Codes Commonly Billed with E06.5
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert E06.5 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| E06.5 | 2453 | 10000 |
| E06.5 | 2458 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To E06.5
Other codes in section E00-E07 (Disorders of thyroid gland).
ICD-10 E06.5, Billing FAQ
Is ICD-10 code E06.5 billable? +
Yes, E06.5 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to E06.5? +
ICD-10 E06.5 includes: Chronic fibrous thyroiditis; Chronic thyroiditis NOS; Ligneous thyroiditis, and 1 more clinical synonyms.
What ICD-9 codes does E06.5 map to? +
Per CMS GEMs, E06.5 maps to ICD-9 codes: 2453, 2458. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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