I31
⚠ Non-billable
Other diseases of pericardium
ICD-10-CM · FY2026 · Diseases of the Circulatory System
Code
I31
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Circulatory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code I31?
ICD-10-CM code I31 represents Other diseases of pericardium. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.
Is I31 billable?
No. I31 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is I31 in?
I31 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.
Related codes in the I31 category
I31.0
Chronic adhesive pericarditis
Billable
I31.1
Chronic constrictive pericarditis
Billable
I31.2
Hemopericardium, not elsewhere classified
Billable
I31.3
Pericardial effusion (noninflammatory)
Non-billable
I31.4
Cardiac tamponade
Billable
I31.8
Other specified diseases of pericardium
Billable
I31.9
Disease of pericardium, unspecified
Billable
I31.31
Malignant pericardial effusion in diseases classified elsewhere
Billable
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