All ICD10 Codes

I31.31

Billable
ChapterI00–I99
Ranksubcategory
Official Description

Malignant pericardial effusion in diseases classified elsewhere

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).

Instructional Notes

Code First
General instructions are available for the parent sections:
View CH9 NotesView I31 NotesView I31.3 Notes

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)
I30-I5AOther forms of heart disease (I30-I5A)
I31Other diseases of pericardium
I31.3Pericardial effusion (noninflammatory)
I31.31Malignant pericardial effusion in diseases classified elsewhere

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I31.31:

subcategoryI31.3
Pericardial effusion (noninflammatory)
View context instructions
categoryI31
Other diseases of pericardium
View context instructions
chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I31.31. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths
Effusion1 unique routes
pericardium, pericardial (noninflammatory)
malignant, in disease classified elsewhere→I31.31

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 314
Other Circulatory System Diagnoses with MCC
DRG 315
Other Circulatory System Diagnoses with CC
DRG 316
Other Circulatory System Diagnoses without CC/MCC

Cross Reference

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