Other forms of acute pericarditis

This code signifies an acute inflammation of the pericardium that does not fit the criteria for specific types like infectious, idiopathic, or effusive pericarditis. It encompasses less common or unspecified acute pericardial inflammatory processes.

Use this code when documentation specifies acute pericarditis but does not provide enough detail to classify it as a more specific type (e.g., viral, bacterial, or post-myocardial infarction). It is appropriate for cases where the etiology is unknown or falls outside the categories of I30.0-I30.1 and I30.9.

• Ensure documentation clearly states "acute pericarditis" and lacks further specificity for other I30 subcategories.
• Do not use this code if a more specific type of acute pericarditis (e.g., viral, infectious, or post-MI) is documented; choose the appropriate subcategory.
• Consider sequencing this code after a code for the underlying cause if known and documented (e.g., a systemic inflammatory disease).