ICD-10-CM · Chapter 9 · I00-I99
I10 Essential (primary) hypertension
Includes
- high blood pressure
- hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
Excludes 1 (cannot be coded together)
- hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Excludes 2 (not included here)
- essential (primary) hypertension involving vessels of brain (I60-I69)
- essential (primary) hypertension involving vessels of eye (H35.0-)
This category is a complete, billable diagnosis code.
No additional specificity is required — submit I10 directly on claims and documentation without a subcode extension.
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category I10:
- Hypertension — Hipertensión
Last reviewed: September 2026