2025
ICD-10-CM
Diagnosis
Code

I1A.0 Resistant hypertension

  • Billable
  • 2024–2025

I1A.0 is a billable/specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Resistant hypertension.

Inclusion term

  • 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.-)

Versions

  1. 2025

    No changes

  2. 2024

    New code