I16.1
✓ BillableHypertensive emergency
Diseases of the circulatory system (I00-I99)
Clinical Description
ICD-10-CM code I16.1 represents hypertensive emergency. This code falls under the Diseases of the circulatory system (I00-I99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code I16.1?
ICD-10-CM code I16.1 is "Hypertensive emergency". It belongs to the category: Diseases of the circulatory system (I00-I99).
Is I16.1 a billable ICD-10 code?
Yes, I16.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Related Codes in I16
Other codes in the same category that may be relevant for differential coding:
🧪 Validate Combinations
Add I16.1 to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)