ICD-10 E03.2
Billable / SpecificHypothyroidism due to medicaments and other exogenous substances
About ICD-10-CM E03.2
ICD-10-CM code E03.2 represents Hypothyroidism due to medicaments and other exogenous substances. This is a billable/specific code in the Endocrine, Nutritional, and Metabolic chapter (block E03). The 2026 edition of ICD-10-CM E03.2 became effective on October 1, 2025.
Use Additional Code
When coding E03.2, also report these additional codes when applicable.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Coding Notes
Code First
- poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)
Medicare LCD Coverage for E03.2
Local Coverage Determinations (LCDs) from CMS MACs that list E03.2 as a covered diagnosis.
Showing top 10 of 53 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing E03.2.
1 Cigna
2 Medicare
CPT Codes Commonly Billed with E03.2
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 01782 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 01999 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 01829 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 00400 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 01922 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 00731 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 00635 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 00322 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 00921 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
- 01991 CMS LCD: Billing and Coding: Monitored Anesthesia Care CMS LCD
Convert E03.2 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 |
|---|---|---|
| E03.2 | 2442 | 10000 |
| E03.2 | 2443 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To E03.2
Other codes in section E00-E07 (Disorders of thyroid gland).
ICD-10 E03.2, Billing FAQ
Is ICD-10 code E03.2 billable? +
Yes, E03.2 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with E03.2? +
Procedures frequently paired with E03.2 include: 01782, 01999, 01829, 00400, 01922.
What ICD-9 codes does E03.2 map to? +
Per CMS GEMs, E03.2 maps to ICD-9 codes: 2442, 2443. 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 July 16, 2026.
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