ICD-10-CM 2027 diagnosis code

I77Other disorders of arteries and arterioles

Not billable — use a more specific code

I77 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I77

I77 is the ICD-10-CM diagnosis code for other disorders of arteries and arterioles. It belongs to block I70-I79 (diseases of arteries, arterioles and capillaries) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: I77.0 (acquired), I77.1 (artery), I77.2 (artery), I77.3 (dysplasia), I77.4 (syndrome), I77.5 (artery), I77.6 (unspecified), I77.7 (dissection) and 2 more.

The conditions in its Excludes2 note aren't part of I77, but may be coded alongside it if the patient has both: collagen (vascular) diseases (M30-M36), hypersensitivity angiitis (M31.0) and pulmonary artery (I28.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under I77

Coding notes

Excludes2Not included here — may be reported together if both conditions exist

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

Notes that apply from higher levels

Instructions written at a parent level also apply to I77.

Broader instructions also apply from Chapter 9: Diseases of the circulatory system.

Code history

2016
2017
2018
2019
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2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about I77

Is I77 billable?: No. I77 is a header code. Report one of its more specific subcodes instead.