2007 ICD-9-CM Procedure 37.27 Cardiac mapping 37.27 is a specific code that can be used to specify a procedure 37.27 contains 2 index entries View the full Volume 3 37.* hierarchy Code also any concomitant procedure 37.27 excludes: electrocardiogram (89.52) His bundle recording (37.29) Index entries containing 37.27: Cardiac mapping 37.27 Mapping cardiac (electrophysiologic) 37.27 doppler (flow) 88.72