ICD-10-CM I1A is the diagnosis code for Other hypertension. This code falls under the section "Hypertensive diseases" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where I1A sits in the ICD-10-CM classification helps ensure proper coding:
No, I1A is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
I1A is the ICD-10-CM diagnosis code for "Other hypertension". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
I1A is located in Section I10-I1A — "Hypertensive diseases" within Chapter 9 of the ICD-10-CM Tabular List.
I1A has 1 sub-code(s) that provide more specific detail: I1A.0.
Use I1A when the patients documented diagnosis matches "Other hypertension" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other hypertension is I1A.
No, I1A is non-billable. Use a more specific sub-code for primary diagnosis billing.
I1A is in Chapter 9 of the ICD-10-CM Tabular List.
Yes, I1A is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.