ICD-9-CM Volume 2 Index entries containing back-references to
556:
- Colitis (acute) (catarrhal) (croupous) (cystica superficialis) (exudative) (hemorrhagic) (noninfectious) (phlegmonous) (presumed noninfectious) 558.9
- ulcerative (chronic) (idiopathic) (nonspecific) 556.9