I15.9Billable

Secondary hypertension, unspecified

Chapter
9. Diseases of the circulatory system
Category
I15
Effective date
October 1, 2026

Related codes in category I15

I15Secondary hypertensionI15.0Renovascular hypertensionYesI15.1Hypertension secondary to other renal disordersYesI15.2Hypertension secondary to endocrine disordersYesI15.8Other secondary hypertensionYes

Frequently asked questions

What is ICD-10 code I15.9?

I15.9 is an ICD-10-CM diagnosis code for Secondary hypertension, unspecified.

Is I15.9 a billable code?

Yes. I15.9 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is I15.9 in?

I15.9 falls under Chapter 9: Diseases of the circulatory system.

When did I15.9 become effective?

I15.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to I15.9?

I15.9 belongs to category I15, which includes 5 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.