2008 ICD-9-CM Diagnosis Code 401.9
Unspecified essential hypertension
- hypertension occurring without preexisting renal disease or known organic cause.
- Short description: HYPERTENSION NOS.
- ICD-9-CM 401.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
- You are viewing the 2008 version of ICD-9-CM 401.9.
- More recent version(s) of ICD-9-CM 401.9: 2009 2010 2011 2012 2013.
401.9 Alternative Terminology
Convert 401.9 to ICD-10-CM 
ICD-9-CM Volume 2 Index entries containing back-references to 401.9:
pressure
decreased, due to shock following injury 
