2024 ICD-10-CM Diagnosis Code I99.8

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• Abnormality of hepatic vein
• Acquired arteriovenous malformation
• Acquired arteriovenous malformation of vascular structure of gastrointestinal tract
• Acute ischemic pancreatitis
• Acute lower limb ischemia
• Acute vascular insufficiency
• Acute visceral ischemia
• Alteration in tissue perfusion
• Arterial ischemia
• Arteriovenous fistula occlusion
• Arteriovenous fistula rupture
• Arteriovenous graft occlusion
• Arteriovenous shunt occlusion
• Bacterial cardiovascular infection
• Calcinosis following arterial/venous infarct
• Cardiovascular fistula due to endocarditis
• Cardiovascular morbidity
• Cardiovascular system hereditary disorder
• Chronic disease of cardiovascular system
• Chronic vascular insufficiency
• Contusion of skin due to vascular fragility
• Critical ischemia of foot
• Critical lower limb ischemia
• Cushing phenomenon
• Dehiscence of aortic valve annulus as complication of procedure
• Dermatosis resulting from small vessel insufficiency
• Dermatosis resulting from vascular insufficiency
• Dilated blood vessels in skin
• Disorder of arteriovenous shunt
• Disorder of oxygen transport
• Disorder of portal venous system
• Disruption of aortic valve annulus
• Ductus arteriosus dependent systemic circulation
• Entrapment of blood vessel
• Flap ischemia
• Fragile blood vessel
• Fungal cardiovascular infection
• Gaucher disease with ophthalmoplegia and cardiovascular calcification
• Gaucher's disease
• Graft failure due to prolonged ischemia
• Hereditary cutaneous vascular syndrome
• Hereditary dysplasia of blood vessel
• Hypostasis
• Impairment of peripheral tissue perfusion
• Inadequate flow to support prescribed dialysis blood flow
• Increased capillary fragility
• Ineffective tissue perfusion
• Ischemia
• Ischemia of bilateral lower limbs
• Ischemia of bilateral upper limbs
• Ischemia of left upper limb
• Ischemia of right lower extremity
• Ischemia of right upper limb
• Ischemia of stoma
• Ischemic finger
• Ischemic foot
• Ischemic hand
• Ischemic pancreatitis
• Ischemic reperfusion injury
• Ischemic toe
• Limb ischemia
• Lower limb ischemia
• Lower limb ischemia
• Lower limb ischemia
• Mass of cardiovascular structure
• Obstruction of surgically constructed systemic venous pathway as complication of procedure
• Occlusion of microvasculature of skin caused by platelet plug
• Pain of bilateral lower limbs co-occurrent and due to ischemia
• Pain of bilateral upper limbs co-occurrent and due to ischemia
• Pain of left lower limb co-occurrent and due to ischemia
• Pain of left lower limb co-occurrent and due to ischemia
• Pain of left upper limb co-occurrent and due to ischemia
• Pain of right lower limb co-occurrent and due to ischemia
• Pain of right lower limb co-occurrent and due to ischemia
• Peripheral ischemia
• Purpura due to increased intravascular pressure
• Retinal arteriovenous dilatation
• Right upper limb pain co-occurrent and due to ischemia
• Subacute neuronopathic Gaucher's disease
• Thrombophilia due to vascular anomaly
• Transient ischemia
• Upper limb ischemia
• Upper limb ischemia
• Upper limb ischemia
• Vascular calcification
• Vascular graft calcification
• Vascular graft occlusion
• Vascular insufficiency
• Venous collateral circulation
• Viral cardiovascular infection
• Visceral ischemia

Clinical Information

• Vascular Calcification

  deposition of calcium into the blood vessel structures. excessive calcification of the vessels is associated with atherosclerotic plaques formation particularly after myocardial infarction (see monckeberg medial calcific sclerosis) and chronic kidney diseases which in turn increase vascular stiffness.

• Brain Ischemia

  localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. this frequently occurs in conjunction with brain hypoxia (hypoxia, brain). prolonged ischemia is associated with brain infarction.

• Chronic Limb-Threatening Ischemia

  a severe form of peripheral artery disease in which a hypoperfusion of the blood through an organ or tissue is caused by occlusion of peripheral arterial vessels. it is associated with the presence of chronic ischemic rest pain, ulceration or gangrene.

• Cold Ischemia

  the chilling of a tissue or organ during decreased blood perfusion or in the absence of blood supply. cold ischemia time during organ transplantation begins when the organ is cooled with a cold perfusion solution after organ procurement surgery, and ends after the tissue reaches physiological temperature during implantation procedures.

• Hypoxia-Ischemia, Brain

  a disorder characterized by a reduction of oxygen in the blood combined with reduced blood flow (ischemia) to the brain from a localized obstruction of a cerebral artery or from systemic hypoperfusion. prolonged hypoxia-ischemia is associated with ischemic attack, transient; brain infarction; brain edema; coma; and other conditions.

• Ischemia

  a hypoperfusion of the blood through an organ or tissue caused by a pathologic constriction or obstruction of its blood vessels, or an absence of blood circulation.

• Ischemic Attack, Transient

  brief reversible episodes of focal, nonconvulsive ischemic dysfunction of the brain having a duration of less than 24 hours, and usually less than one hour, caused by transient thrombotic or embolic blood vessel occlusion or stenosis. events may be classified by arterial distribution, temporal pattern, or etiology (e.g., embolic vs. thrombotic). (from adams et al., principles of neurology, 6th ed, pp814-6)

• Mesenteric Ischemia

  ischemic tissue injury produced by insufficient perfusion of intestinal tissue by the mesenteric circulation (i.e., celiac artery; superior mesenteric artery; infererior mesenteric artery; and mesenteric veins). it can progress from ischemia; edema; and gangrene of the bowel wall to peritonitis and cardiovascular collapse.

• Myocardial Ischemia

  a disorder of cardiac function caused by insufficient blood flow to the muscle tissue of the heart. the decreased blood flow may be due to narrowing of the coronary arteries (coronary artery disease), to obstruction by a thrombus (coronary thrombosis), or less commonly, to diffuse narrowing of arterioles and other small vessels within the heart. severe interruption of the blood supply to the myocardial tissue may result in necrosis of cardiac muscle (myocardial infarction).

• Optic Neuropathy, Ischemic

  ischemic injury to the optic nerve which usually affects the optic disk (optic neuropathy, anterior ischemic) and less frequently the retrobulbar portion of the nerve (optic neuropathy, posterior ischemic). the injury results from occlusion of arterial blood supply which may result from temporal arteritis; atherosclerosis; collagen diseases; embolism; diabetes mellitus; and other conditions. the disease primarily occurs in the sixth decade or later and presents with the sudden onset of painless and usually severe monocular visual loss. anterior ischemic optic neuropathy also features optic disk edema with microhemorrhages. the optic disk appears normal in posterior ischemic optic neuropathy. (glaser, neuro-ophthalmology, 2nd ed, p135)

• Reperfusion Injury

  adverse functional, metabolic, or structural changes in tissues that result from the restoration of blood flow to the tissue (reperfusion) following ischemia.

• Spinal Cord Ischemia

  reduced blood flow to the spinal cord which is supplied by the anterior spinal artery and the paired posterior spinal arteries. this condition may be associated with arteriosclerosis, trauma, emboli, diseases of the aorta, and other disorders. prolonged ischemia may lead to infarction of spinal cord tissue.

• Vertebrobasilar Insufficiency

  localized or diffuse reduction in blood flow through the vertebrobasilar arterial system, which supplies the brain stem; cerebellum; occipital lobe; medial temporal lobe; and thalamus. characteristic clinical features include syncope; lightheadedness; visual disturbances; and vertigo. brain stem infarctions or other brain infarction may be associated.

• Warm Ischemia

  a tissue or organ remaining at physiological temperature during decreased blood perfusion or in the absence of blood supply. during organ transplantation it begins when the organ reaches physiological temperature before the completion of surgical anastomosis and ends with reestablishment of the blood circulation through the tissue.

• Vascular Calcification

  deposition of calcium in vascular structures.

I99.8 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert I99.8 to ICD-9-CM

• ICD-9-CM Code: 459.89 - Circulatory disease NEC
  Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.