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ICD-10-CM 2027 diagnosis code

I09.8Other specified rheumatic heart diseases

Not billable — use a more specific code

I09.8 is a header code, so it can't be reported by itself. Choose one of the 2 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 I09.8

I09.8 is the ICD-10-CM diagnosis code for other specified rheumatic heart diseases. It belongs to category I09 (other rheumatic heart diseases), 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 2 subcodes must be used instead.

Within I09, choose I09.8 (Other specified rheumatic heart diseases) only when documentation doesn't support a more specific option: rheumatic myocarditis (I09.0), rheumatic diseases of endocardium, valve unspecified (I09.1), chronic rheumatic pericarditis (I09.2) and rheumatic heart disease, unspecified (I09.9).

To report this condition, pick the subcode that matches the documentation: I09.81 (failure) and I09.89 (diseases).

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 I09.8

Notes that apply from higher levels

Instructions written at a parent level also apply to I09.8.

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

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 I09.8

Is I09.8 billable?

No. I09.8 is a header code. Report one of its more specific subcodes instead.