E05: Thyrotoxicosis [hyperthyroidism]
Codes under E05 (Thyrotoxicosis [hyperthyroidism]). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| E05.0 | Thyrotoxicosis with diffuse goiter | — |
| E05.0 | Thyrotoxicosis with diffuse goiter | — |
| E05.00 | Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm | ✓ |
| E05.00 | Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm | ✓ |
| E05.01 | Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm | ✓ |
| E05.01 | Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm | ✓ |
| E05.1 | Thyrotoxicosis with toxic single thyroid nodule | — |
| E05.1 | Thyrotoxicosis with toxic single thyroid nodule | — |
| E05.2 | Thyrotoxicosis with toxic multinodular goiter | — |
| E05.2 | Thyrotoxicosis with toxic multinodular goiter | — |
| E05.3 | Thyrotoxicosis from ectopic thyroid tissue | — |
| E05.3 | Thyrotoxicosis from ectopic thyroid tissue | — |
| E05.4 | Thyrotoxicosis factitia | — |
| E05.4 | Thyrotoxicosis factitia | — |
| E05.8 | Other thyrotoxicosis | — |
| E05.8 | Other thyrotoxicosis | — |
| E05.9 | Thyrotoxicosis, unspecified | — |
| E05.9 | Thyrotoxicosis, unspecified | — |
| E05.10 | Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm | ✓ |
| E05.10 | Thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis or storm | ✓ |
| E05.11 | Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm | ✓ |
| E05.11 | Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis or storm | ✓ |
| E05.20 | Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm | ✓ |
| E05.20 | Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis or storm | ✓ |
| E05.21 | Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm | ✓ |
| E05.21 | Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm | ✓ |
| E05.30 | Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis or storm | ✓ |
| E05.30 | Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis or storm | ✓ |
| E05.31 | Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis or storm | ✓ |
| E05.31 | Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis or storm | ✓ |
| E05.40 | Thyrotoxicosis factitia without thyrotoxic crisis or storm | ✓ |
| E05.40 | Thyrotoxicosis factitia without thyrotoxic crisis or storm | ✓ |
| E05.41 | Thyrotoxicosis factitia with thyrotoxic crisis or storm | ✓ |
| E05.41 | Thyrotoxicosis factitia with thyrotoxic crisis or storm | ✓ |
| E05.80 | Other thyrotoxicosis without thyrotoxic crisis or storm | ✓ |
| E05.80 | Other thyrotoxicosis without thyrotoxic crisis or storm | ✓ |
| E05.81 | Other thyrotoxicosis with thyrotoxic crisis or storm | ✓ |
| E05.81 | Other thyrotoxicosis with thyrotoxic crisis or storm | ✓ |
| E05.90 | Thyrotoxicosis, unspecified without thyrotoxic crisis or storm | ✓ |
| E05.90 | Thyrotoxicosis, unspecified without thyrotoxic crisis or storm | ✓ |
| E05.91 | Thyrotoxicosis, unspecified with thyrotoxic crisis or storm | ✓ |
| E05.91 | Thyrotoxicosis, unspecified with thyrotoxic crisis or storm | ✓ |
Frequently asked questions
What is ICD-10-CM code E05?
E05 is an ICD-10-CM category covering Thyrotoxicosis [hyperthyroidism]. It contains 42 more specific diagnosis codes, 28 of which are billable.
Is E05 a billable code?
No — E05 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example E05.0 — Thyrotoxicosis with diffuse goiter). 28 of the 42 codes under E05 are billable.
What codes fall under E05?
E05 includes E05.0, E05.0, E05.00, E05.00, E05.01, plus 37 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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