I77.75

I77.75: Dissection of other precerebral arteries

Billable / specific codeICD-10-CM

I77.75 is a billable, specific ICD-10-CM code for dissection of other precerebral arteries. It is valid for submission on a claim.

Check I77.75 with the rest of the claim: free scrubber

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

aneurysm of carotid artery (I72.0)
aneurysm of other precerebral arteries (I72.5)
aneurysm of vertebral artery (I72.6)
dissection of carotid artery (I77.71)
dissection of vertebral artery (I77.74)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Dissection of basilar artery (trunk)

Excludes2 inherited from the categories above I77.75

Not part of this code, but both may be coded when both are present.

Written on I77.7: Other arterial dissection

dissection of aorta (I71.0-)
dissection of coronary artery (I25.42)

Written on I77: Other disorders of arteries and arterioles

collagen (vascular) diseases (M30-M36)
hypersensitivity angiitis (M31.0)
pulmonary artery (I28.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I77.75 is named in 10 Medicare coverage policies: 10 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A56612Billing and Coding: CT of the Head
A56631Billing and Coding: Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography
A56722Billing and Coding: Intraoperative Neurophysiological Testing