<Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (December 2011) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Melena </Th> </Tr> <Tr> <Th_colspan="2"> Classification and external resources </Th> </Tr> <Tr> <Th> Specialty </Th> <Td> General surgery, gastroenterology </Td> </Tr> <Tr> <Th> ICD - 10 </Th> <Td> K92. 1 </Td> </Tr> <Tr> <Th> ICD - 9 - CM </Th> <Td> 578.1 </Td> </Tr> <Tr> <Th> MedlinePlus </Th> <Td> 003130 </Td> </Tr> <Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Melena </Th> </Tr> <Tr> <Th_colspan="2"> Classification and external resources </Th> </Tr>

Minimum amount of gi bleed to cause melena