I31

Non-billable

Other diseases of pericardium

I31 is the ICD-10-CM code for Other diseases of pericardium. It is a non-billable category code — use a more specific child code such as I31.0 for billing.

Status
Header (non-billable)
Chapter
I00-I99
Subcodes
7
Edition
FY2026

I00-I99 Diseases of the circulatory system

What this means — in plain language

MedlinePlus · NIH

The pericardium is a membrane, or sac, that surrounds your heart. It holds the heart in place and helps it work properly. Problems with the pericardium include: Pericarditis - an inflammation of the sac. It can be from a virus or other infection, a heart attack, heart surgery, other medical conditions, injuries, and certain medicines. Pericardial effusion - the buildup of fluid in the sac Cardiac tamponade - a…

Read more about Pericardial Disorders at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes1 — not coded here

  • diseases of pericardium specified as rheumatic (I09.2)
  • postcardiotomy syndrome (I97.0)
  • traumatic injury to pericardium (S26.-)

Frequently asked questions

What is ICD-10 code I31?
I31 is the ICD-10-CM code for "Other diseases of pericardium". It falls under I00-I99 Diseases of the circulatory system.
Is I31 a billable code?
No — I31 is a non-billable header code. Use a more specific child code (such as I31.0) for billing.
What are the subcodes of I31?
I31 has 7 more specific child codes, including I31.0, I31.1, I31.2.
What is excluded from I31?
Excludes1 (not coded here): diseases of pericardium specified as rheumatic (I09.2); postcardiotomy syndrome (I97.0); traumatic injury to pericardium (S26.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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