2007 ICD-9-CM Procedure 37.9 Other operations on heart and pericardium 37.9 is a non-specific code that should not be used to specify a procedure 37.9 contains 1 index entry View the full Volume 3 37.* hierarchy Index entries containing 37.9: Defibrillation, electric (external) (internal) 99.62 automatic cardioverter/defibrillator - see category 37.9