Hyperthyroidism
ICD-10-CM diagnosis code · also known as overactive thyroid, thyrotoxicosis
E05.90BillableThyrotoxicosis, unspecified without thyrotoxic crisis or stormView code details →What this means for your family
Hyperthyroidism means an overactive thyroid is speeding the body up — racing heart, weight loss, anxiety, trouble sleeping. E05.90 is the unspecified form. It's very treatable once the cause is found, and symptoms usually settle with the right plan.
Your first steps
- →Ask what's causing it (Graves' disease, nodules, thyroiditis) — treatment depends on the cause.
- →Get your thyroid lab numbers and a follow-up schedule in writing.
- →Note symptoms like heart racing or tremor so the team can track improvement.
Questions to ask your care team
- ?What's causing my hyperthyroidism, and what are my treatment options?
- ?How often do we recheck thyroid levels?
- ?Which symptoms mean I should call sooner?
Sources: MedlinePlus (NIH/NLM)
For informational purposes only — not medical advice. Talk to your care team about your situation.
How Eleplan helps with hyperthyroidism
- Track thyroid labs and medications in one plan — Ellie shows the trend over time.
- Forward results to your plan inbox for plain-language summaries.
- Keep every endocrinology follow-up on the shared calendar.
Frequently asked questions
What is the ICD-10 code for hyperthyroidism?
The ICD-10-CM code for hyperthyroidism is E05.90 (Thyrotoxicosis, unspecified without thyrotoxic crisis or storm).
Is E05.90 a billable code?
Yes — E05.90 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement.
What else is hyperthyroidism called?
Hyperthyroidism is also known as overactive thyroid, thyrotoxicosis.
Look up another condition or ICD-10 code