ICD-10-CM · Chapter 9 · I00–I99
I10
Essential (primary) hypertension
Diseases of the circulatory system
Quick facts
- Code
- I10
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 9 — Diseases of the circulatory system
- Category
- I10
- Specificity
- 3 characters
How coders use this code
ICD-10-CM I10 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of essential (primary) hypertension. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
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