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ICD-10-CM 2027 diagnosis code

I08Multiple valve diseases

Not billable — use a more specific code

I08 is a header code, so it can't be reported by itself. Choose one of the 6 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 I08

I08 is the ICD-10-CM diagnosis code for multiple 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 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: I08.0 (valves), I08.1 (valves), I08.2 (valves), I08.3 (valves), I08.8 (diseases) and I08.9 (unspecified).

Don't report I08 together with the conditions in its Excludes1 note: endocarditis, valve unspecified (I38) and rheumatic valve disease NOS (I09.1).

The conditions in its Excludes2 note aren't part of I08, but may be coded alongside it if the patient has both: multiple valve disease specified as nonrheumatic (I34.-, I35.-, I36.-, I37.-, I38.-, Q22.-, Q23.-, Q24.8-).

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 I08

Coding notes

IncludesFurther defines the content of the category
  • multiple valve diseases specified as rheumatic or unspecified
Excludes1Not coded here — never report together with this code
  • endocarditis, valve unspecified (I38)
  • rheumatic valve disease NOS (I09.1)
Excludes2Not included here — may be reported together if both conditions exist

Notes that apply from higher levels

Instructions written at a parent level also apply to I08.

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

Codes whose notes reference I08

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about I08

Is I08 billable?

No. I08 is a header code. Report one of its more specific subcodes instead.