2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Hypertensive Disease 401-405 > Essential Hypertension 401.* >  2008 ICD-9-CM Diagnosis 401.9
Unspecified essential hypertension On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.
The 2009 version of ICD-9-CM 401.9 can be accessed here. - 401.9 is a specific code that can be used to specify a diagnosis
- 401.9 contains 11 index entries
- View the ICD-9-CM Volume 1 401.* hierarchy
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Index entries containing 401.9:- Blood
- pressure
- high (see also Hypertension)
 401.9- incidental reading (isolated) (nonspecific), without diagnosis of hypertension 796.2
Disease, diseased - see also Syndrome- Huchard's (continued arterial hypertension) 401.9
- hypertensive (see also Hypertension) 401.9
Elevation- blood pressure (see also Hypertension) 401.9
- reading (incidental) (isolated) (nonspecific), no diagnosis of hypertension 796.2
High- artery (arterial) tension (see also Hypertension) 401.9
- without diagnosis of hypertension 796.2
- blood pressure (see also Hypertension) 401.9
- incidental reading (isolated) (nonspecific), no diagnosis of hypertension 796.2
Huchard's disease (continued arterial hypertension) 401.9
Hyperpiesia (see also Hypertension) 401.9
Hyperpiesis (see also Hypertension) 401.9
Hypertension, hypertensive (arterial) (arteriolar) (crisis) (degeneration) (disease) (essential) (fluctuating) (idiopathic) (intermittent) (labile) (low renin) (orthostatic) (paroxysmal) (primary) (systemic) (uncontrolled) (vascular) 401.0 401.1 401.9- with
- chronic kidney disease
- heart involvement (conditions classifiable to 429.0-429.3, 429.8, 429.9 due to hypertension) (see also Hypertension, heart) 402.00 402.10 402.90
- with kidney involvement see Hypertension, cardiorenal
- renal involvement (only conditions classifiable to 585, 586, 587) (excludes conditions classifiable to 584) (see also Hypertension, kidney) 403.00 403.10 403.90
- with heart involvement see Hypertension, cardiorenal failure (and sclerosis) (see also Hypertension, kidney) 403.01 403.11 403.91
- sclerosis without failure (see also Hypertension, kidney) 403.00 403.10 403.90
- accelerated (see also Hypertension, by type, malignant) 401.0 - -
- antepartum see Hypertension, complicating pregnancy, childbirth, or the puerperium
- cardiorenal (disease) 404.00 404.10 404.90
- cardiovascular disease (arteriosclerotic) (sclerotic) 402.00 402.10 402.90
- cardiovascular renal (disease) (sclerosis) (see also Hypertension, cardiorenal) 404.00 404.10 404.9
- cerebrovascular disease NEC 437.2 437.2 437.2
- complicating pregnancy, childbirth, or the puerperium 642.2 642.0 642.9
- due to
- encephalopathy 437.2 437.2 437.2
- gestational (transient) NEC - - 642.3
- Goldblatt's 440.1 440.1 440.1
- heart (disease) (conditions classifiable to 429.0-429.3, 429.8, 429.9 due to hypertension) 402.00 402.10 402.90
- intracranial, benign - 348.2 -
- intraocular - - 365.04
- kidney 403.00 403.10 403.90
- lesser circulation - - 416.0
- necrotizing 401.0 - -
- ocular - - 365.04
- portal (due to chronic liver disease) - - 572.3
- postoperative 997.91
- psychogenic - - 306.2
- puerperal, postpartum see Hypertension, complicating pregnancy, childbirth, or the puerperium
- pulmonary (artery) - - 416.8
- renal (disease) (see also Hypertension, kidney) 403.00 403.10 403.90
- renovascular NEC 405.01 405.11 405.91
- secondary NEC 405.09 405.19 405.99
- transient - - 796.2
- venous, chronic (asymptomatic) (idiopathic) - - 459.30
- with
- due to
- deep vein thrombosis (see also Syndrome, postphlebitic) - - - 459.10
Tension- arterial, high (see also Hypertension) 401.9
- without diagnosis of hypertension 796.2
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