Hypertensive crisis (I16) ICD-10-CM
The I16 code range covers hypertensive crisis with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
Codes in the I16 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the I16 range.
Hypertensive Crisis
A severe, acute increase in BLOOD PRESSURE that may result in STROKE or MYOCARDIAL ISCHEMIA.
Hypertensive Urgency
Hypertensive crisis without end-organ damage.
About the I16 Code Range
A hypertensive crisis is a sudden, severe rise in blood pressure that may cause stroke or reduced blood flow to the heart muscle.
Within I16, I16.0 identifies hypertensive urgency, I16.1 identifies hypertensive emergency, and I16.9 identifies an unspecified hypertensive crisis.
Questions About This Page
How many billable codes are in the I16 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the I16 range classify?
The range classifies hypertensive crisis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
