K59 — ICD-10-CM Diagnosis Codes

• K59 Other functional intestinal disorders
• K59.0 Constipation
• K59.00 Constipation, unspecified billable
• K59.01 Slow transit constipation billable
• K59.02 Outlet dysfunction constipation billable
• K59.03 Drug induced constipation billable
• K59.04 Chronic idiopathic constipation billable
• K59.09 Other constipation billable
• K59.1 Functional diarrhea billable
• K59.2 Neurogenic bowel, not elsewhere classified billable
• K59.3 Megacolon, not elsewhere classified
• K59.31 Toxic megacolon billable
• K59.39 Other megacolon billable
• K59.4 Anal spasm billable
• K59.8 Other specified functional intestinal disorders
• K59.81 Ogilvie syndrome billable
• K59.89 Other specified functional intestinal disorders billable
• K59.9 Functional intestinal disorder, unspecified billable