What is the ICD-10 code for malignant pericardial effusion?

The ICD-10 code for malignant pericardial effusion is I31.31, used when the effusion is confirmed as malignant and secondary to a neoplasm.

How is cardiac tamponade coded in ICD-10?

Cardiac tamponade is coded as I31.4 in ICD-10, used when pericardial effusion results in hemodynamic compromise.

ICD-10 Coding for Pericardial Effusion(I31.31, C78.2, I31.0)

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Explore ICD-10 coding for pericardial effusion, including malignant and noninflammatory types, with detailed documentation requirements and coding tips.

Also known as:

Fluid around the heartPericardial fluid accumulation

Related ICD-10 Code Ranges

Complete code families applicable to Pericardial Effusion

I00-I99Primary Range

Diseases of the circulatory system

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
I31.31	Malignant pericardial effusion	Use when the effusion is confirmed as malignant, secondary to a neoplasm.	Cytology/pathology report stating 'malignant cells'
I31.39	Other noninflammatory pericardial effusion	Use for non-malignant, non-inflammatory effusions.	CRP <10 mg/L absence of fever non-purulent fluid
I31.4	Cardiac tamponade	Use when effusion results in cardiac tamponade.	Echo showing ≥10mm effusion + right atrial collapse

Primary ICD-10-CM Codes

Malignant pericardial effusion in diseases classified elsewhere

I31.31Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Other noninflammatory pericardial effusionI31.39

Malignant pericardial effusionI31.31

Documentation & Coding Risks

Avoid these common issues when documenting Pericardial Effusion.

Lack of specificity in effusion documentation

Impact

Clinical: May lead to inappropriate treatment decisions., Regulatory: Non-compliance with coding guidelines., Financial: Potential for claim denials.

Mitigation

Ensure detailed documentation of effusion type and cause.

Using I31.3 without specifying malignant or other types

Impact

Reimbursement: May lead to claim denials or incorrect DRG assignment., Compliance: Non-compliance with ICD-10 specificity requirements., Data Quality: Inaccurate clinical data representation.

Mitigation

Require specificity: Document ‘malignant’ or ‘other noninflammatory’ effusion.

Incorrect sequencing of malignant effusion

Impact

Failure to sequence primary neoplasm code before I31.31.

Mitigation

Educate coding staff on proper sequencing rules.

Frequently Asked Questions

Primary Code

I31.31

Malignant pericardial effusion in diseases classified elsewhere

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