ICD-9 Code 459.9

Unspecified circulatory system disorder

  1. ICD-9 Index
  2. Chapter: 390–459
  3. Section: 451-459
  4. Block: 459 Other disorders of circulatory system
  5. 459.9 - Circulatory disease NOS

Not Valid for Submission

459.9 is a legacy non-billable code used to specify a medical diagnosis of unspecified circulatory system disorder. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 459.9
Short Description:Circulatory disease NOS
Long Description:Unspecified circulatory system disorder

Convert 459.9 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • I87.9 - Disorder of vein, unspecified
  • I99.9 - Unspecified disorder of circulatory system

Code Classification

  • Diseases of the circulatory system (390–459)
    • Diseases of veins and lymphatics, and other diseases of circulatory system (451-459)
      • 459 Other disorders of circulatory system

Information for Medical Professionals

Synonyms

  • Abnormal vascular flow
  • Abnormal vasomotor function
  • Abnormality of left inferior vena cava
  • Abnormality of right inferior vena cava
  • Abnormality of systemic vein
  • Acquired abnormality of brachiocephalic vein
  • Acquired abnormality of inferior vena cava
  • Acquired abnormality of left iliac vein
  • Acquired abnormality of pulmonary venous structure
  • Acquired abnormality of right femoral vein
  • Acquired abnormality of right iliac vein
  • Acquired abnormality of superior vena cava
  • Acquired abnormality of systemic vein
  • Acute renal failure due to ischemia
  • Acute vascular insufficiency
  • Alteration in tissue perfusion
  • Angiodyskinesia
  • Arteriovenous disorder
  • Bad circulation - vasomotor change
  • Blanching of skin of foot on elevation
  • Cerebral amyloid angiopathy
  • Cerebrospinal angiopathy
  • Chronic vascular insufficiency
  • Congenital vascular disorder
  • Congenital vascular malformation
  • Decreased vascular flow
  • Decreased vascular pattern
  • Delayed venous return in limb vein
  • Disorder of blood vessel
  • Disorder of portal venous system
  • Disorder of vein
  • Disorder of vein of lower extremity
  • Extravasation following blood transfusion
  • Graft failure due to prolonged ischemia
  • Hemorrhage of blood vessel
  • Hepatic portal vein tumor invasion
  • Ineffective tissue perfusion
  • Ischemia
  • Ischemia of feet
  • Ischemic finger
  • Ischemic foot
  • Ischemic hand
  • Ischemic toe
  • Limb ischemia
  • Palmar varices
  • Peripheral ischemia
  • Porto-caval shunting vascular flow
  • Porto-splenic shunting vascular flow
  • Pulmonary vein dilatation
  • Sporadic cerebral amyloid angiopathy
  • Thread veins
  • Thromboembolic disorder
  • Vascular disorder of extremity
  • Vascular insufficiency
  • Venous hypertension

Index to Diseases and Injuries

References found for the code 459.9 in the Index of Diseases and Injuries:


ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.

Previous Code: 459.89

Related Codes

Next Code: 460