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 2026, 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.
About the I16 Code Range
ICD-10 code I16 specifically identifies a hypertensive crisis, a severe rise in blood pressure that requires prompt medical attention. This category includes codes for different types of hypertensive crises, reflecting the urgency and severity of the condition.
The code I16.0 corresponds to hypertensive urgency, a situation where blood pressure is extremely elevated without immediate organ damage, while I16.1 denotes hypertensive emergency, which involves dangerously high blood pressure with signs of organ damage. Both terms, including "hypertensive crisis," are used interchangeably in clinical settings and are crucial for differentiating the severity of hypertension episodes. The code I16.9 covers cases where a hypertensive crisis is diagnosed but the specifics aren’t clearly documented. Understanding these distinctions helps coders and healthcare professionals assign the correct ICD-10 code for conditions related to sudden, critical elevations in blood pressure, ensuring precise medical records and facilitating targeted treatment approaches.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
