ICD-9-CM Diagnosis Code 401.9
latest release 2012

Specific, billable ICD-9-CM Medical Code
ICD-9-CM code 401.9 is a specific, billable medical code that can be used to indicate a diagnosis on a reimbursement claim.


Short Description
Hypertension NOS

Medical topics related to ICD-9-CM Code 401.9
High Blood Pressure, Benign
High blood pressure (hypertension) occurs when smaller blood vessels (arterioles) become narrowed, causing blood to exert excessive pressure against
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High Blood Pressure, Malignant
Malignant high blood pressure (malignant hypertension, or hypertensive emergency) is a rapid, unexplained rise in blood pressure that is a medical e
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ICD-9-CM (clinical modification) codes are the US version of the World Health Organization's International Classification of Diseases version 9 used in medical billing and coding to describe diseases, injuries, symptoms and conditions.
ICD-9-CM 401.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT (clinical procedural terminology) codes are largely numeric, they differ in that CPT codes describe medical procedures and services.
ICD-9-CM codes will be replaced by ICD-10-CM codes in October of 2014.

Billable ICD-9-CM Code Billable medical code that can be used on a reimbursement claim.

Non-Billable ICD-9-CM Code Non-Billable medical code

ICD-9-CM Equivalent mapping to ICD-10-CM General Equivalent Mapping (GEM) of ICD-9-CM to ICD-10-CM
ICD-9-CM 401.9 Resource Center