MALENA: Melena is the medical term for black, tarry stools caused by the presence of digested blood. It typically indicates bleeding in the upper gastrointestinal (GI) tract, such as the: Stomach Duodenum Hematochezia vs. melena: What's the difference? UT MD Anderson Coding Bowel Obstruction in ICD 10 CM 2011 ICD 9 CM Diagnosis Disease Index SCAN Health Plan R63.4 ICD 10 Code: Abnormal weight loss Decoding the ICD 10 Code for Sensory Processing Disorder Big Dreamers ABA