2007 ICD-9-CM Procedure 99.63 Closed chest cardiac massage Rhythmic compression of the heart by pressure applied manually over the sternum (closed heart massage) or directly to the heart through an opening in the chest wall (open heart massage). It is done to reinstate and maintain circulation. (Dorland, 28th ed) 99.63 is a specific code that can be used to specify a procedure 99.63 contains 3 index entries View the full Volume 3 99.* hierarchy 99.63 also known as: Cardiac massage NOS Manual external cardiac massage Index entries containing 99.63: Cardiac massage (external) (closed chest) 99.63 open chest 37.91 Massage cardiac (external) (manual) (closed) 99.63 open 37.91 Resuscitation cardiac 99.60 external massage 99.63 open chest 37.91