Table 2.

Leading Diagnoses in the Ambulatory Setting for Gastrointestinal, Liver and Pancreatic Disorders in the United States, 2010

Rank	Diagnosis	Estimated Visits				ICD-9-CM Codes
		Office Visits	Emergency Department	Hospital Outpatient Department	Total
1	Abdominal pain	9,232,817	6,475,136	970,318	16,678,271	789.00
2	Gastroesophageal reflux and reflux esophagitis	6,222,275	294,942	549,992	7,067,209	530.11,530.81
3	Hemorrhoids	3,592,943	20,128	226,505	3,939,576	455
4	Constipation	2,905,705	530,827	280,129	3,716,661	564.0
5	Nausea and vomiting	1,404,564	1,969,949	215,701	3,590,214	787.0
6	Abdominal wall and inguinal hernia	2,852,677	204,375	422,937	3,479,989	550, 553.0, 553.1, 553.2, 553.9
7	Malignant neoplasm of the colon or rectum	2,420,463	2,420	386,783	2,809,666	153, 154
8	Diverticular disease	2,275,438	262,910	195,771	2,734,119	562.1
9	Diarrhea	1,943,572	533,181	197,071	2,673,824	787.91
10	Gastritis and dyspepsia	1,902,993	472,165	234,836	2,609,994	535, 536.8
11	Irritable bowel syndrome	2,290,460	24,121	89,170	2,403,751	564.1
12	Crohn’s disease	1,722,664	44,641	121,256	1,888,561	555
13	Cholelithiasis	872,040	355,504	119,166	1,346,710	574
14	Dysphagia	1,021,034	38,264	113,664	1,172,962	787.2
15	Rectal bleeding	648,827	176,160	61,772	886,759	569.3
16	Benign neoplasm of colon and rectum	726,675		144,775	871,450	211.3, 211.4
17	Pancreatitis	409,862	320,418	91,492	821,772	577, 577.1
18	Ulcerative colitis	633,445	17,166	72,763	723,374	556
19	Hepatitis C infection	563,442	19,496	90,334	673,272	070.41, 070.44, 070.51, 070.54, 070.7
20	Appendicitis	317,374	195,150	128,524	641,048	540, 541, 542
21	Hepatitis, unspecified	554,749	3,212	9,573	567,534	573.3
22	Chronic liver disease and cirrhosis	438,914	30,084	78,957	547,955	571
23	Barrett’s esophagus	369,739		47,083	416,822	530.85
24	Celiac disease	23,521		4,472	27,993	579.0

Source: National Ambulatory Medical Care Survey and National Hospital Ambulatory Medical Care Survey (http://www.cdc.gov/nchs/ahcd.htm)