ICD-10-CM 2027 diagnosis code

I06Rheumatic aortic valve diseases

Not billable — use a more specific code

I06 is a header code, so it can't be reported by itself. Choose one of the 5 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 I06

I06 is the ICD-10-CM diagnosis code for rheumatic aortic valve diseases. It belongs to block I05-I09 (chronic rheumatic heart diseases) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: I06.0 (stenosis), I06.1 (insufficiency), I06.2 (insufficiency), I06.8 (diseases) and I06.9 (unspecified).

The conditions in its Excludes2 note aren't part of I06, but may be coded alongside it if the patient has both: aortic valve disease not specified as rheumatic (I35.-) and aortic valve disease with mitral and/or tricuspid valve involvement (I08.-).

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 I06

Coding notes

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

aortic valve disease not specified as rheumatic (I35.-)
aortic valve disease with mitral and/or tricuspid valve involvement (I08.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to I06.

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

Codes whose notes reference I06

I27.22Code also
I35Excludes2

Code history

2016
2017
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2020
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 I06

Is I06 billable?: No. I06 is a header code. Report one of its more specific subcodes instead.