ICD-10-CM
ICD-10 code for High blood pressure: I10
The closest CDC title for "High blood pressure" is I10, Essential (primary) hypertension. I10 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under I10, then other CDC titles that name essential (primary) hypertension
A header groups codes and is not billed. A billable code is one you can report.
Excludes1
Excludes1 means these codes are not reported together.
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
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Questions
What is the ICD-10 code for High blood pressure?
The closest CDC title for "High blood pressure" is I10, Essential (primary) hypertension. I10 is a billable code.
Is I10 billable?
Yes. I10 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to I10?
The CDC tabular list gives 1 Excludes1 note (not coded together), 2 Excludes2 notes (may be coded together when both are documented) for I10 and the categories above it. They are listed on this page.
What chapter is I10 in?
Chapter 9. Diseases of the circulatory system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.