ICD-10 E04.1
Billable / SpecificNontoxic single thyroid nodule
About ICD-10-CM E04.1
ICD-10-CM code E04.1 represents Nontoxic single thyroid nodule. This is a billable/specific code in the Endocrine, Nutritional, and Metabolic chapter (block E04). The 2026 edition of ICD-10-CM E04.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under E04.1. Per CMS ICD-10-CM Tabular 2026.
- Colloid nodule (cystic) (thyroid)
- Nontoxic uninodular goiter
- Thyroid (cystic) nodule NOS
Medicare LCD Coverage for E04.1
Local Coverage Determinations (LCDs) from CMS MACs that list E04.1 as a covered diagnosis.
Showing top 10 of 357 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing E04.1.
5 Medicare
1 Aetna
CPT Codes Commonly Billed with E04.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Convert E04.1 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 |
|---|---|---|
| E04.1 | 2410 | 10000 |
| E04.1 | 2462 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To E04.1
Other codes in section E00-E07 (Disorders of thyroid gland).
ICD-10 E04.1, Billing FAQ
Is ICD-10 code E04.1 billable? +
Yes, E04.1 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 E04.1? +
ICD-10 E04.1 includes: Colloid nodule (cystic) (thyroid); Nontoxic uninodular goiter; Thyroid (cystic) nodule NOS.
What CPT codes are commonly billed with E04.1? +
Procedures frequently paired with E04.1 include: 76942, 76536.
What ICD-9 codes does E04.1 map to? +
Per CMS GEMs, E04.1 maps to ICD-9 codes: 2410, 2462. 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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