Table 2.

Prevalence of procedure related complications (ICD-9-CM codes 996 to 999) among discharges undergoing total hip arthroplasty from 1990–2004

Procedure related complications (ICD-9 996–999)
	1990–1994		1995–1999		2000–2004		1990–2004
Complications	N	%	N	%	N	%	N	%
Complications affecting specific body systems (ICD-9 997)
Central nervous systema	140	0.02	1,752	0.24	2,025	0.21	3,917	0.17
Cardiaca	5,108	0.85	7,276	0.99	9,036	0.95	21,420	0.94
Peripheral vasculara	1,991	0.33	339	0.05	1,354	0.14	3,684	0.16
Respiratorya	8,652	1.43	8,807	1.20	9,274	0.97	26,733	1.17
Gastrointestinala	7,107	1.18	7,521	1.03	7,157	0.75	21,785	0.95
Genitourinarya	9,612	1.59	6,345	0.87	8,877	0.93	24,834	1.09
Other (organ specific)a	584	0.10	2,804	0.38	1,177	0.12	4,565	0.20
Other complications of procedure (ICD-9 998)
Postoperative shock a	449	0.07	49	0.01	524	0.06	1022	0.05
Hematoma/seromaa	8,304	1.38	12,494	1.71	13,700	1.44	34,498	1.51
Accidental puncture/lacerationa	156	0.03	549	0.08	551	0.06	1,256	0.06
Disruption operative wounda	192	0.03	0	0.00	684	0.07	876	0.04
Postoperative infectiona	4,160	0.69	4,739	0.65	1,884	0.20	10,783	0.47
Other complications of procedurea	20,598	3.41	16,113	2.20	16,242	1.70	52,953	2.31
Complications of medical care (ICD-9 999)
Complications of medical carea	2,694	0.45	702	0.10	1,604	0.17	5,000	0.22
Prevalence of selected adverse diagnosis in patients undergoing total hip arthroplasty
Diagnosis	N	%	N	%	N	%	N	%
Acute posthemorrhagic anemiab	127,813	21.18	194,150	26.53	170,291	17.87	492,254	21.51
Psychosisb	7,032	1.17	5,937	0.81	12,844	1.35	25,813	1.13
Thrombotic eventsb	3,588	0.60	1,941	0.27	3,082	0.32	8,611	0.38
Pulmonary insufficiency after trauma and surgery/ARDSb	175	0.03	737	0.10	1,905	0.20	2,817	0.12
Pulmonary embolismb	2,787	0.46	2,193	0.30	2,481	0.26	7,461	0.33
Patients with any procedure related complicationa	91,953	15.24	85,661	11.70	89,089	9.35	266,703	11.654

^a Significant difference between all periods of interest (POI)

^b Significant difference between all time periods