ICD 10 Coding for Crohn's Disease AAPC Knowledge Center Comparison between ICD 10 and IPCCC for the classification of Download Table ICD 10 CM Coding Guide for Viral Intestinal Infections Stool Colour Chart A quick clinical guide to interpret stool color changes and their possible causes. Stool appearance can give important clues about gastrointestinal healthbut always correlate with history, examination, and 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 Bowel Obstruction ICD 10 Codes, Symptoms & Treatment