Non-Billable / Non-Specific Code
ICD-10-CM I31 is the diagnosis code for Other diseases of pericardium. This code falls under the section "Other forms of heart disease" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as I31. They are mutually exclusive:
Understanding where I31 sits in the ICD-10-CM classification helps ensure proper coding:
No, I31 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
I31 is the ICD-10-CM diagnosis code for "Other diseases of pericardium". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
I31 is located in Section I30-I5A — "Other forms of heart disease" within Chapter 9 of the ICD-10-CM Tabular List.
I31 has 7 sub-code(s) that provide more specific detail: I31.0, I31.1, I31.2, I31.3, I31.4 and more.
Use I31 when the patients documented diagnosis matches "Other diseases of pericardium" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other diseases of pericardium is I31.
No, I31 is non-billable. Use a more specific sub-code for primary diagnosis billing.
I31 is in Chapter 9 of the ICD-10-CM Tabular List.
Type 1 Excludes for I31 include: diseases of pericardium specified as rheumatic (I09.2); postcardiotomy syndrome (I97.0); traumatic injury to pericardium (S26.-).
Yes, I31 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.