2024 ICD-10-CM Diagnosis Code I70.90

Approximate Synonyms

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

• Abnormal diffuse intimal thickening of artery
• Acute occlusion of artery
• Arteriosclerosis obliterans
• Arteriosclerotic vascular disease
• Arteriovascular degeneration
• Asymptomatic chronic arterial occlusive disease
• Asymptomatic occlusion of artery
• Atheroma of artery
• Atherosclerosis of artery
• Atherosclerosis, deafness, diabetes, epilepsy, nephropathy syndrome
• Atherosclerotic occlusive disease
• Atherosclerotic plaque disruption with thrombosis of artery
• Calciphylaxis
• Condition of arterial wall - finding
• Endarteritis
• Endarteritis
• Endarteritis
• Endarteritis deformans
• Endarteritis obliterans
• Hardened arteries
• Ischemic ulcer of lower leg due to atherosclerotic disease
• Multifocal atherosclerosis
• Non-uremic calcific arteriolopathy
• Senile arteriosclerosis
• Senile arteritis
• Senile endarteritis
• Vascular degeneration

Clinical Information

• Atherosclerosis-. a thickening and loss of elasticity of the walls of arteries that occurs with formation of atherosclerotic plaques within the arterial intima.
• Coronary Artery Disease-. pathological processes of coronary arteries that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.
• Intracranial Arteriosclerosis-. vascular diseases characterized by thickening and hardening of the walls of arteries inside the skull. there are three subtypes: (1) atherosclerosis with fatty deposits in the arterial intima; (2) monckeberg's sclerosis with calcium deposits in the media and (3) arteriolosclerosis involving the small caliber arteries. clinical signs include headache; confusion; transient blindness (amaurosis fugax); speech impairment; and hemiparesis.
• Calciphylaxis-. condition of induced systemic hypersensitivity in which tissues respond to appropriate challenging agents with a sudden local calcification.
• Endarteritis-. inflammation of the inner endothelial lining (tunica intima) of an artery.
• Arteriosclerosis Obliterans-. common occlusive arterial disease which is caused by atherosclerosis. it is characterized by lesions in the innermost layer (arterial intima) of arteries including the aorta and its branches to the extremities. risk factors include smoking, hyperlipidemia, and hypertension.
• Tunica Intima-. the innermost layer of an artery or vein, made up of one layer of endothelial cells and supported by an internal elastic lamina.
• Calciphylaxis-. a rare syndrome characterized by vascular calcification and skin necrosis. it seen in patients with end stage renal disease.
• Endarteritis-. inflammation of the arterial intima.

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:

• Adult diagnoses - The Medicare Code Editor detects inconsistencies in adult cases by checking a patient's age and any diagnosis on the patient's record. The adult code edits apply to patients age range is 15–124 years inclusive (e.g., senile delirium, mature cataract).

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.

MS-DRG	MS-DRG Title	MCD	Relative Weight
299	PERIPHERAL VASCULAR DISORDERS WITH MCC	05	1.5762
300	PERIPHERAL VASCULAR DISORDERS WITH CC	05	1.067
301	PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC	05	0.7098

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 I70.90 to ICD-9-CM Code

• ICD-9-CM Code: 440.9 - Atherosclerosis NOS
  Conversion Flag: 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.

Patient Education

Atherosclerosis

Atherosclerosis is a disease in which plaque builds up inside your arteries. Plaque is a sticky substance made up of fat, cholesterol, calcium, and other substances found in the blood. Over time, plaque hardens and narrows your arteries. That limits the flow of oxygen-rich blood to your body.

Atherosclerosis can lead to serious problems, including:

• Coronary artery disease. These arteries supply blood to your heart. When they are blocked, you can suffer angina or a heart attack.
• Carotid artery disease. These arteries supply blood to your brain. When they are blocked you can suffer a stroke.
• Peripheral arterial disease. These arteries are in your arms, legs and pelvis. When they are blocked, you can suffer from numbness, pain and sometimes infections.

Atherosclerosis usually doesn't cause symptoms until it severely narrows or totally blocks an artery. Many people don't know they have it until they have a medical emergency.

A physical exam, imaging, and other diagnostic tests can tell if you have it. Medicines can slow the progress of plaque buildup. Your doctor may also recommend procedures such as angioplasty to open the arteries, or surgery on the coronary or carotid arteries. Lifestyle changes can also help. These include following a healthy diet, getting regular exercise, maintaining a healthy weight, quitting smoking, and managing stress.

NIH: National Heart, Lung, and Blood Institute

[Learn More in MedlinePlus]

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.