I10
✓ Billable
Essential (primary) hypertension
ICD-10-CM · FY2026 · Diseases of the Circulatory System
Code
I10
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Circulatory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
📖 In-depth coding guide
ICD-10 Code I10 — Essential Hypertension Guide →
Official coding notes
From CMS's ICD-10-CM Tabular List.
Includes
- high blood pressure
- hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
Excludes1 — never code together
- hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Excludes2 — not included here, but may code together
- essential (primary) hypertension involving vessels of brain (I60-I69)
- essential (primary) hypertension involving vessels of eye (H35.0-)
Frequently asked questions
What is ICD-10 code I10?
ICD-10-CM code I10 represents Essential (primary) hypertension. It is a billable diagnosis code in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.
Is I10 billable?
Yes. I10 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is I10 in?
I10 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.
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