E05.81 – Other thyrotoxicosis with thyrotoxic crisis or storm
ICD-10-CM 2027 diagnosis code · Disorders of thyroid gland
ICD-10-CM code
E05.81
- Code
E05.81(claims format:E0581)- Description
- Other thyrotoxicosis with thyrotoxic crisis or storm
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 4. Endocrine, nutritional and metabolic diseases (E00-E89)
- Block
- E00-E07 Disorders of thyroid gland
- Parent codes
- E05 › E05.8
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
E05 – Thyrotoxicosis [hyperthyroidism]
Excludes1 (not coded here):
E05.8 – Other thyrotoxicosis
Applicable to:
- Overproduction of thyroid-stimulating hormone
Index terms for E05.81
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in E05.8
Frequently asked questions
What is ICD-10 code E05.81?
E05.81 is the ICD-10-CM code for other thyrotoxicosis with thyrotoxic crisis or storm, in the block E00-E07 (Disorders of thyroid gland).
Is E05.81 a billable code?
Yes. E05.81 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does E05.81 belong to?
It belongs to category E05 – Thyrotoxicosis [hyperthyroidism].
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.