I1A.0

Billable

Resistant hypertension

I1A.0 is the ICD-10-CM code for Resistant hypertension. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
I00-I99
Parent
I1A
Edition
FY2026

I00-I99 Diseases of the circulatory system

Includes

  • Apparent treatment resistant hypertension
  • Treatment resistant hypertension
  • True resistant hypertension

Code first

  • specific type of existing hypertension, if known, such as:
  • essential hypertension (I10)
  • secondary hypertension (I15.-)

Frequently asked questions

What is ICD-10 code I1A.0?
I1A.0 is the ICD-10-CM code for "Resistant hypertension". It falls under I00-I99 Diseases of the circulatory system.
Is I1A.0 a billable code?
Yes — I1A.0 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.