ICD-10-CM 2027 diagnosis code
I30Acute pericarditis
I30 is a header code, so it can't be reported by itself. Choose one of the 4 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 I30
I30 is the ICD-10-CM diagnosis code for acute pericarditis. It belongs to block I30-I5A (other forms of heart disease) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: I30.0 (pericarditis), I30.1 (pericarditis), I30.8 (pericarditis) and I30.9 (unspecified).
Don't report I30 together with the conditions in its Excludes1 note: Dressler's syndrome (I24.1), rheumatic pericarditis (acute) (I01.0) and viral pericarditis due to Coxsackie virus (B33.23).
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 I30
Coding notes
- acute mediastinopericarditis
- acute myopericarditis
- acute pericardial effusion
- acute pleuropericarditis
- acute pneumopericarditis
Notes that apply from higher levels
Instructions written at a parent level also apply to I30.
Broader instructions also apply from Chapter 9: Diseases of the circulatory system.
Codes whose notes reference I30
- I01.0Excludes1
Code history
- 2016
- 2017
- 2018
- 2019
- 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 I30
Is I30 billable?
- No. I30 is a header code. Report one of its more specific subcodes instead.