I31 – Other diseases of pericardium
ICD-10-CM 2027 diagnosis code · Other forms of heart disease
ICD-10-CM code
I31
- Code
I31(claims format:I31)- Description
- Other diseases of pericardium
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 9. Diseases of the circulatory system (I00-I99)
- Block
- I30-I5A Other forms of heart disease
Billable codes under I31
I31 is a header code and cannot be used on claims. Choose the most specific code:
- I31.0 – Chronic adhesive pericarditisBillable
- I31.1 – Chronic constrictive pericarditisBillable
- I31.2 – Hemopericardium, not elsewhere classifiedBillable
- I31.3 – Pericardial effusion (noninflammatory)Header (more codes below)
- I31.4 – Cardiac tamponadeBillable
- I31.8 – Other specified diseases of pericardiumBillable
- I31.9 – Disease of pericardium, unspecifiedBillable
Notes for I31
Frequently asked questions
What is ICD-10 code I31?
I31 is the ICD-10-CM code for other diseases of pericardium, in the block I30-I5A (Other forms of heart disease).
Is I31 a billable code?
No. I31 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.