2007 ICD-9-CM Procedure 44.31 High gastric bypass 44.31 is a specific code that can be used to specify a procedure 44.31 contains 6 index entries View the full Volume 3 44.* hierarchy 44.31 also known as: Printen and Mason gastric bypass Index entries containing 44.31: Bypass gastric 44.39 high 44.31 Printen and Mason 44.31 high gastric 44.31 shunt stomach 44.39 high gastric 44.31 Operation Printen and Mason (high gastric bypass) 44.31 Printen and Mason operation (high gastric bypass) 44.31