icd 10 code for diabetic ischemic optic neuropathy

What is ischemic optic neuropathy?

Anterior ischemic optic neuropathy (AION) is a sudden loss of vision due to an interruption of blood flow to the front (anterior) of the optic nerve, also known as the optic nerve head. The optic nerve's job is to carry visual information from the eye to the brain, which assembles this information into images.

Is ischemic optic neuropathy a stroke?

What Is Eye Stroke? An eye stroke, or anterior ischemic optic neuropathy, is a dangerous and potentially debilitating condition that occurs from a lack of sufficient blood flow to the tissues located in the front part of the optic nerve.

What is arteritic anterior ischemic optic neuropathy?

Arteritic Anterior Ischemic Optic Neuropathy (AAION) is an acute, often painful optic neuropathy that occurs predominantly in elderly patients over age 50 but with increasing incidence each decade thereafter and can cause permanent loss of vision.

What is posterior ischemic optic neuropathy?

Posterior ischemic optic neuropathy (PION) is a potentially devastating condition characterized by acute, painless vision loss in one or both eyes. PION can be classified into three types: arteritic PION caused by giant cell arteritis, non-arteritic PION, and perioperative PION.

Can diabetes cause ischemic optic neuropathy?

Anterior ischemic optic neuropathy (AION) is an acute vascular condition of the optic nerve. Studies suggest that up to 25% of patients with AION have a history of diabetes (36).

Can diabetes cause optic neuropathy?

Diabetic patients have a variety of systemic and ocular health conditions, with the most common ocular complications being diabetic retinopathy (DR) and diabetic macular edema. However, various forms of diabetic optic neuropathy (DON) can also develop, some of which can threaten vision.

What is the difference between NAION and AION?

AAION causes a pallid edema that ultimately resolves leaving significant excavation and atrophy of the disc whereas NAION typically exhibits normal or hyperemic edema that resolves leaving relatively preserved disc substance.

How can you tell the difference between AION and optic neuritis?

In addition with anterior ischemic optic neuropathy, the optic nerve is always swollen; with optic neuritis most patients have retrobulbar optic neuritis, but about one-third can have swelling of the optic disc.

What does arteritic mean?

(ar'ter-ī'tis), Inflammation or infection involving an artery or arteries. [L. arteria, artery, + G. - itis, inflammation]

What is the difference between AION and PION?

Pathogenetically AION and PION are very different diseases. AION represents an acute ischaemic disorder of the ONH supplied by the posterior ciliary artery (PCA), while PION has no specific location in the posterior part of the optic nerve and does not represent an ischaemic disorder of any definite artery.

What causes non arteritic ischemic optic neuropathy?

The exact mechanism causing reduced blood flow to the optic nerve in NAION is not proven, but it is known that this condition occurs more often when a patient has conditions such as diabetes, high blood pressure, and sleep apnea. Smoking may also elevate the risk of developing NAION.

Is ischemic optic neuropathy an emergency?

In the management of AION, the first crucial step with patients aged 50 and over is to identify immediately whether it is arteritic or not because A-AION is an ophthalmic emergency and requires urgent treatment with high-dose steroid therapy to prevent any further visual loss in one or both eyes.

Is NAION a stroke?

Conclusions: Patients with NAION have an increased risk of ischemic stroke. Physicians should refer all patients with NAION for systemic survey of vasculopathy and control of modifiable risk factors to prevent irreversible neurological sequelae.

Is ischemic optic neuropathy an emergency?

In the management of AION, the first crucial step with patients aged 50 and over is to identify immediately whether it is arteritic or not because A-AION is an ophthalmic emergency and requires urgent treatment with high-dose steroid therapy to prevent any further visual loss in one or both eyes.

What are the signs of a stroke in your eye?

The hallmark signs of eye stroke are sudden and painless vision loss or changes in vision -- like blurriness, floaters, a darkened area in your field of vision, decreased visual contrast, and light sensitivity -- in one eye. Although these symptoms usually come on quickly, they can appear gradually.

Is an eye stroke the same as a stroke?

Eye strokes are related to but different from cerebral or brain strokes – the so-called normal strokes we think of when someone says stroke. Eye strokes are similar in that they result from reduced blood flow, Browne explains. In addition, cerebral strokes "can also result from rupture and bleeding from an artery."

What is optic nerve injury?

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)

When will the ICD-10-CM H47.01 be released?

The 2022 edition of ICD-10-CM H47.01 became effective on October 1, 2021.