Estimating medical costs of gastroenterological diseases

Table 2 Prevalence and costs of gastroenterological diseases among cohorts (n = 183 976) in 2001 by major disease category, according to principal diagnosis only

CSSacode	Single-level CCS diagnosiscategories	Patients		Total cost
		No.	Mean age (SD)	US $	%
6	Hepatitis	6 356	44.3 (16.1)	547 599	6.5%
12	Cancer of esophagus	67	47.4 (22.3)	193 853	2.3%
13	Cancer of stomach	110	64.0 (15.0)	207 765	2.5%
14	Cancer of colon	230	63.2 (14.3)	308 903	3.6%
15	Cancer of rectum and anus	180	65.9 (12.8)	328 540	3.9%
16	Cancer of liver and	242	60.5 (14.4)	448 114	5.3%
	intrahepatic bile duct
17	Cancer of pancreas	30	67.9 (13.4)	148 490	1.8%
18	Cancer of other	40	67.5 (11.5)	70 893	0.8%
	GI organs, peritoneum
120	Hemorrhoids	2 110	45.6 (17.1)	236 477	2.8%
135	Intestinal infection	7 727	25.3 (22.2)	175 479	2.1%
138	Esophageal disorders	967	46.9 (20.9)	145 264	1.7%
139	Gastroduodenal ulcer	6 214	48.1 (18.5)	898 028	10.6%
	(except hemorrhage)
140	Gastritis and duodenitis	14 112	36.7 (21.9)	348 621	4.1%
141	Other disorders of	7 736	38.7 (23.1)	285 697	3.4%
	stomach and duodenum
142	Appendicitis and other	362	33.1 (18.8)	217 212	2.6%
	appendiceal conditions
143	Abdominal hernia	515	35.6 (27.9)	228 586	2.7%
144	Regional enteritis	1 406	31.4 (22.5)	29 259	0.3%
	and ulcerative colitis
145	Intestinal obstruction	543	39.4 (29.3)	112 282	1.3%
	without hernia
146	Diverticulosis	45	58.2 (20.9)	29 713	0.4%
	and diverticulitis
147	Anal and rectal conditions	366	41.8 (21.4)	87 506	1.0%
148	Peritonitis and	72	49.5 (21.5)	54 941	0.6%
	intestinal abscess
149	Biliary tract disease	1 000	54.2 (17.5)	509 960	6.0%
150	Liver disease,	156	48.5 (12.3)	39 179	0.5%
	alcohol-related
151	Other liver diseases	2 102	47.7 (16.9)	569 503	6.7%
152	Pancreatic disorders	157	50.0 (17.0)	116 327	1.4%
	(not diabetes)
153	Gastrointestinal hemorrhage	1 385	52.4 (20.2)	442 493	5.2%
154	Noninfectious gastroenteritis	17 717	28.9 (21.9)	401 586	4.7%
155	Other gastrointestinal	16 080	36.7 (22.6)	563 336	6.7%
	disorders
214	Digestive congenital	84	31.2 (22.2)	15 785	0.2%
	anomalies
250	Nausea and vomiting	926	25.5 (24.3)	19 924	0.2%
251	Abdominal pain	14 113	34.4 (20.1)	404 085	4.8%
	Others	997	37.6 (23.1)	284 509	3.4%
	Total	67 073	34.8 (21.8)	8469 909	100.0%

^aCSS: Clinical Classifications Software by the Agency for Healthcare Research and Quality (AHRQ), Rockville, MD, USA.