Is I77 a billable ICD-10-CM code?

No. I77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does I77 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).

I77

I77 — Other disorders of arteries and arterioles

Non-billable headerICD-10-CM

I77 is a non-billable header ICD-10-CM code for other disorders of arteries and arterioles. It cannot be billed on its own: choose one of the more specific child codes below.

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.

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

Other codes that can never be billed with I77

These codes carry an Excludes1 note pointing at I77. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I77 alone.

Q27.3Arteriovenous malformation (peripheral)

Risk adjustment

I77 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead I77

10 child codes. Green means billable.

Questions about I77

Is I77 a billable ICD-10-CM code?: No. I77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I77 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).