disease has major feature Constipation disease constipation disorder colonic inertia ICD9:564.0 MEDGEN:1101 NCIT:C37930 DOID:2089 MESH:D003248 Dyschezia ICD9:564.00 HP:0002019 Irregular and infrequent or difficult evacuation of the bowels. MONDO:0002203 UMLS:C0009806 SCTID:14760008 icd11.foundation:502284069 constipation ICD10CM:K59.0 bowel dysfunction