The Healthcare Cost and Utilization Project (HCUP-3) is a Federal-State-industry partnership to assemble health care data for use in health services research and health policy analysis. The information presented here is based on data from the HCUP-3 Nationwide Inpatient Sample (NIS) Release 3, which contains all discharge records from a 20-percent sample of U.S. community hospitals from 17 States. Unlike other commonly used databases, the HCUP-3 database includes all payers.
The NIS sample of hospitals is a stratified probability sample of community hospitals, with sampling probabilities proportional to the number of U.S. community hospitals in each stratum. Strata were defined based on five characteristics: region (Northeast, South, Midwest, West); location (urban, rural); teaching status; ownership/control (government, non-Federal; private, not-for-profit; private, investor-owned) and bed size (small, medium, large, varying by location and teaching status). The frame is limited to community hospitals, as defined by the American Hospital Association Annual Survey of Hospitals, from States participating in HCUP-3.
Sampling weights were used to obtain national estimates for the measures presented here—discharges, average length of stay, and average total charges. Comparisons between the NIS and the National Hospital Discharge Survey demonstrated that the number of discharges and lengths of stay were essentially the same when considered on a national or regional basis. Comparisons between the NIS and the Medicare Provider Analysis and Review (MEDPAR) data for enrollees not covered by health maintenance organizations demonstrated that the number of discharges was essentially the same.
DCCHPR: Clinical Classifications for Health Policy Research (CCHPR) was developed at AHCPR as a way to classify diagnoses and procedures into clinically meaningful categories for use in aggregate statistical reporting. Unlike DRGs (diagnosis-related groups) and severity-of-illness classifications, CCHPR classifies single diagnoses (DCCHPR) and single procedures (PCCHPR) into clinically similar groups without attempting to control for intensity of resource use. For this guide, the DCCHPR Version 2 was used to classify principal diagnoses into 260 diagnosis categories. All valid diagnoses are classified; E codes (External Causes of Injury and Poisoning) are combined into the last category, 260.
MEAN LOS: Mean length of stay (LOS) is calculated by dividing the sum of inpatient days by the number of patients within the CCHPR category. Inpatient days are calculated by subtracting day of admission from day of discharge, so persons entering and leaving a hospital on the same day have a length of stay of zero. Only 0.2 percent of records in the HCUP-3 NIS had missing LOS. A hot-deck procedure was used to impute LOS for these cases, controlling for diagnosis-related group (DRG) and hospital characteristics (geographic region, ownership, urban/rural location, size, and teaching status).
MEAN TOTAL CHARGE: Mean total charge is calculated by dividing the sum of patient charges by the number of patients within the CCHPR category. Total charges represent the dollar amount charged for the hospitalization rather than the amount paid or the actual costs to provide the care. Physician payments are not included. Although capitation and negotiated discounts have made total charges an imprecise measure of reimbursements, charges still represent one of the only ways to approximate costs of hospital care. Only 2.5 percent of records had missing total charges, with a majority of missing cases concentrated among three States (Kansas, California, and Washington). A hot-deck procedure was used to impute total charges for these cases, controlling for DRG, health maintenance organization (HMO) payer status (important for California and Washington), and hospital characteristics (geographic region, ownership, urban/rural location, size, and teaching status).
For information about the HCUP-3 databases, contact:
Healthcare Cost and
Utilization Project (HCUP-3)
Phone: 866-290-HCUP (4287) toll-free
E-mail:
hcup@ahrq.gov
Table of Contents
[Note: Subject areas correspond to
chapters of the International Classification of Diseases, 9th Revision, Clinical
Modification (ICD-9-CM)]
DCCHPR categories Subject areas
1 - 10 1 Infectious and Parasitic Diseases
11 - 47 2 Neoplasms
48 - 58 3 Endocrine, Nutritional, and Metabolic Diseases and
Immunity Disorders
59 - 64 4 Diseases of the Blood and Blood-Forming Organs
65 - 75 5 Mental Disorders
76 - 95 6 Diseases of the Nervous System and Sense Organs
96 - 121 7 Diseases of the Circulatory System
122 - 134 8 Diseases of the Respiratory System
135 - 155 9 Diseases of the Digestive System
156 - 175 10 Diseases of the Genitourinary System
176 - 196 11 Complications of Pregnancy, Childbirth, and the Perperium
197 - 200 12 Diseases of the Skin and Subcutaneous Tissue
201 - 212 13 Diseases of the Musculoskeletal System and Connective
Tissue
213 - 217 14 Congenital Anomalies
218 - 224 15 Certain Conditions Originating in the Perinatal Period
225 - 244 16 Injury and Poisoning
245 - 259 17 Other Conditions
260 18 External Causes of Injury and Poisoning (E Codes)
Statistics From the Nationwide Inpatient Sample for 1994 Hospital Inpatient Stays
DCCHPR - Total % of total Mean total principal diagnoses discharges discharges Mean LOS charges
Total 34,622,215 100.00 5.55 10,275
1 Tuberculosis 20,102 0.06 16.76 25,589
2 Septicemia 352,700 1.02 9.44 16,964
(except in labor)
3 Bacterial infection, 17,094 0.05 8.76 17,891
unspecified site
4 Mycoses 22,069 0.06 12.75 24,935
5 HIV infection 41,950 0.12 10.38 19,730
6 Hepatitis 23,800 0.07 6.11 12,628
7 Viral infections 124,594 0.36 4.43 7,096
8 Other infections, 18,614 0.05 6.99 12,272
including parasitic
9 Sexually transmitted 8,799 0.03 6.61 9,068
infections (not HIV or
hepatitis)
10 Immunizations and 1,267 0.00 5.28 6,690
screening for infectious
diseases
11 Cancer of head and 35,248 0.10 10.26 24,820
neck
12 Cancer of esophagus 12,829 0.04 13.24 29,808
13 Cancer of stomach 25,976 0.08 12.87 28,822
14 Cancer of colon 114,555 0.33 11.13 22,790
15 Cancer of rectum 47,258 0.14 10.52 21,700
and anus
16 Cancer of liver and 10,622 0.03 8.84 18,782
intrahepatic bile duct
17 Cancer of pancreas 31,511 0.09 11.29 22,135
18 Cancer of other GI 16,875 0.05 12.27 26,908
organs, peritoneum
19 Cancer of bronchus, 150,719 0.44 9.80 19,183
lung
20 Cancer, other 3,000 0.01 9.17 18,660
respiratory and
intrathoracic
21 Cancer of bone and 12,044 0.03 8.49 23,231
connective tissue
22 Melanomas of skin 5,161 0.01 4.46 10,295
23 Other non-epithelial 7,230 0.02 5.11 11,990
cancer of skin
24 Cancer of breast 149,723 0.43 3.27 8,882
25 Cancer of uterus 37,619 0.11 5.26 11,641
26 Cancer of cervix 34,931 0.10 4.35 10,801
27 Cancer of ovary 24,634 0.07 8.80 20,154
28 Cancer of other 6,834 0.02 6.46 14,586
female genital organs
29 Cancer of prostate 115,282 0.33 5.35 12,052
30 Cancer of testis 2,230 0.01 5.31 15,822
31 Cancer of other 919 0.00 5.57 11,821
male genital organs
32 Cancer of bladder 57,780 0.17 5.64 12,496
33 Cancer of kidney 27,633 0.08 8.18 18,557
and renal pelvis
34 Cancer of other 3,264 0.01 7.73 17,515
urinary organs
35 Cancer of brain and 31,413 0.09 8.97 22,063
nervous system
36 Cancer of thyroid 15,585 0.05 3.07 8,588
37 Hodgkin's disease 6,718 0.02 9.38 27,343
38 Non-Hodgkin's 48,600 0.14 11.23 26,727
lymphoma
39 Leukemias 37,954 0.11 15.83 50,893
40 Multiple myeloma 16,276 0.05 12.03 22,289
41 Cancer, other primary 11,550 0.03 7.98 19,714
42 Secondary 263,312 0.76 8.95 16,609
malignancies
43 Malignant neoplasm 8,909 0.03 9.00 15,252
without specification
of site
44 Neoplasms of 39,063 0.11 6.78 15,549
unspecified nature
or uncertain behavior
45 Maintenance 349,358 1.01 3.73 9,600
chemotherapy,
radiotherapy
46 Benign neoplasm of 203,364 0.59 3.38 8,270
uterus
47 Other benign 148,385 0.43 5.02 13,032
neoplasm
48 Thyroid disorders 35,678 0.10 3.65 8,185
49 Diabetes mellitus 10,484 0.03 5.50 4,626
without complication
50 Diabetes mellitus 422,146 1.22 7.04 10,935
with complications
51 Other endocrine 39,516 0.11 6.04 9,834
disorders
52 Nutritional 15,541 0.04 11.13 13,816
deficiencies
53 Hyperlipidemia 533 0.00 4.87 6,722
54 Gout and other 8,347 0.02 5.50 7,066
crystal arthropathies
55 Fluid and electrolyte 456,183 1.32 6.58 7,165
disorders
56 Cystic fibrosis 5,101 0.01 10.07 22,078
57 Immunity disorders 976 0.00 9.97 22,481
58 Other nutritional, 51,600 0.15 6.55 11,958
endocrine, and
metabolic disorders
59 Anemia 100,748 0.29 5.34 9,828
60 Acute posthemorrhagic 10,245 0.03 4.50 7,119
anemia
61 Sickle cell anemia 75,537 0.22 6.17 8,656
62 Coagulation and 42,571 0.12 5.67 13,133
hemorrhagic disorders
63 Disease of white 41,757 0.12 6.25 13,291
blood cells
64 Other hematologic 7,786 0.02 7.87 17,064
conditions
65 Mental retardation 686 0.00 18.24 15,142
66 Alcohol-related 305,085 0.88 6.42 5,240
mental disorders
67 Substance-related 214,774 0.62 6.74 4,883
mental disorders
68 Senility and organic 126,202 0.36 13.22 10,519
mental disorders
69 Affective disorders 522,849 1.51 11.65 9,685
70 Schizophrenia and 246,977 0.71 15.63 12,359
related disorders
71 Other psychoses 61,950 0.18 11.11 9,650
72 Anxiety, somatoform, 66,918 0.19 8.87 8,049
dissociative, and
personality disorders
73 Preadult disorders 17,776 0.05 13.35 10,670
74 Other mental conditions 148,446 0.43 7.09 6,012
75 Personal history of 423 0.00 2.73 2,425
mental disorder,
mental and behavioral
problems, observation
and screening for
mental condition
76 Meningitis (except 44,315 0.13 6.58 12,223
that caused by
tuberculosis or
sexually transmitted
infections)
77 Encephalitis (except 10,912 0.03 12.01 25,142
that caused by
tuberculosis or
sexually transmitted
diseases)
78 Other CNS infection 6,024 0.02 16.30 35,665
and poliomyelitis
79 Parkinson's disease 14,896 0.04 8.57 9,096
80 Multiple sclerosis 21,081 0.06 7.83 8,432
81 Other hereditary and 32,070 0.09 8.33 14,799
degenerative nervous
system conditions
82 Paralysis 19,893 0.06 17.63 18,493
83 Epilepsy, convulsions 231,901 0.67 4.73 8,007
84 Headache, including 49,763 0.14 3.60 5,242
migraine
85 Coma, stupor, and 14,396 0.04 10.87 17,972
brain damage
86 Cataract 9,561 0.03 1.57 4,292
87 Retinal detachments, 32,868 0.09 1.82 5,973
defects, vascular
occlusion, and
retinopathy
88 Glaucoma 10,735 0.03 2.18 4,274
89 Blindness and vision 2,121 0.01 3.32 5,369
defects
90 Inflammation, 23,621 0.07 4.37 6,709
infection of eye
(except that caused
by tuberculosis and
sexually transmitted
diseases)
91 Other eye disorders 21,946 0.06 2.61 6,198
92 Otitis media and 29,529 0.09 3.05 5,493
related conditions
93 Conditions associated 64,424 0.19 3.29 4,705
with dizziness or vertigo
94 Other ear and sense 11,218 0.03 3.61 7,259
organ disorders
95 Other nervous system 103,073 0.30 7.05 12,725
disorders
96 Heart valve disorders 82,502 0.24 10.09 42,258
97 Peri-, endo-, and 83,034 0.24 8.60 18,723
myocarditis,
cardiomyopathy
(except that caused
by tuberculosis and
sexually transmitted
diseases)
98 Essential hypertension 39,314 0.11 3.98 5,619
99 Hypertension with 219,792 0.63 6.83 13,454
complications and
secondary hypertension
100 Acute myocardial 700,141 2.02 6.89 19,620
infarction
101 Coronary 1,382,354 3.99 4.79 16,369
atherosclerosis
102 Nonspecific chest 505,827 1.46 2.33 4,977
pain
103 Pulmonary heart 76,244 0.22 8.40 15,275
disease
104 Other and ill-defined 6,048 0.02 8.09 17,143
heart disease
105 Conduction disorders 61,389 0.18 4.82 17,553
106 Cardiac dysrhythmias 556,956 1.61 4.43 9,772
107 Cardiac arrest and 20,307 0.06 6.54 24,452
ventricular fibrillation
108 Congestive heart 945,307 2.73 6.92 11,227
failure, nonhypertensive
109 Acute cerebrovascular 598,635 1.73 9.05 14,531
disease
110 Occlusion or stenosis 119,083 0.34 4.23 12,203
of precerebral arteries
111 Other and ill-defined 21,876 0.06 7.29 14,467
cerebrovascular disease
112 Transient cerebral 177,904 0.51 4.42 6,451
ischemia
113 Late effects of 1,278 0.00 26.73 25,589
cerebrovascular disease
114 Peripheral and 121,013 0.35 8.07 20,745
visceral atherosclerosis
115 Aortic, peripheral, 80,886 0.23 10.16 36,110
and visceral artery
aneurysms
116 Aortic and peripheral 66,437 0.19 8.69 22,259
arterial embolism
or thrombosis
117 Other circulatory 89,742 0.26 5.28 10,649
disease
118 Phlebitis, throm- 176,752 0.51 7.05 8,451
bophlebitis and
thromboembolism
119 Varicose veins of 20,065 0.06 7.74 9,563
lower extremity
120 Hemorrhoids 27,944 0.08 3.05 5,431
121 Other disease of 13,211 0.04 6.20 11,351
veins and lymphatics
122 Pneumonia (except 1,205,979 3.48 7.54 12,417
that caused by
tuberculosis and
sexually transmitted
diseases)
123 Influenza 14,908 0.04 5.18 6,699
124 Acute and chronic 54,864 0.16 2.05 3,915
tonsillitis
125 Acute bronchitis 209,048 0.60 4.07 5,982
126 Other upper 101,145 0.29 3.04 5,008
respiratory infections
127 Chronic obstructive 468,866 1.35 6.87 10,581
pulmonary disease
and bronchiectasis
128 Asthma 443,006 1.28 4.10 6,658
129 Aspiration pneumonitis, 129,372 0.37 10.73 19,708
food/vomitus
130 Pleurisy, pneumothorax, 94,795 0.27 7.87 13,916
pulmonary collapse
131 Respiratory failure, 156,406 0.45 11.06 27,535
insufficiency, arrest
(adult)
132 Lung disease due 8,483 0.02 6.79 13,384
to external agents
133 Other lower 156,634 0.45 4.63 9,066
respiratory disease
134 Other upper 56,694 0.16 4.09 8,584
respiratory disease
135 Intestinal infection 135,188 0.39 4.38 6,191
136 Disorders of teeth 33,308 0.10 2.67 9,838
and jaw
137 Disease of mouth, 19,004 0.05 4.32 8,065
excluding dental
138 Esophageal disorders 136,485 0.39 4.54 8,661
139 Gastroduodenal ulcer 65,624 0.19 6.91 14,470
(except hemorrhage)
140 Gastritis and 161,326 0.47 4.55 7,297
duodenitis
141 Other disorders of 42,099 0.12 6.19 11,373
stomach and duodenum
142 Appendicitis and 221,653 0.64 4.11 9,367
other appendiceal
conditions
143 Abdominal hernia 176,988 0.51 4.45 10,155
144 Regional enteritis 62,909 0.18 8.13 14,155
and ulcerative colitis
145 Intestinal obstruction 257,447 0.74 7.64 13,478
without hernia
146 Diverticulosis and 217,340 0.63 6.94 12,429
diverticulitis
147 Anal and rectal 43,771 0.13 4.77 8,793
conditions
148 Peritonitis and 20,629 0.06 10.35 22,296
intestinal abscess
149 Biliary tract disease 532,428 1.54 4.63 11,415
150 Liver disease, 60,138 0.17 8.13 16,949
alcohol-related
151 Other liver diseases 77,212 0.22 8.21 19,938
152 Pancreatic disorders 184,048 0.53 7.61 14,494
(not diabetes)
153 Gastrointestinal 341,858 0.99 5.86 11,064
hemorrhage
154 Noninfectious 179,018 0.52 3.40 4,557
gastroenteritis
155 Other gastrointestinal 132,383 0.38 7.27 14,419
disorders
156 Nephritis, nephrosis, 15,844 0.05 26.75 10,535
renal sclerosis
157 Acute and unspecified 68,462 0.20 9.72 17,366
renal failure
158 Chronic renal failure 31,180 0.09 8.41 19,350
159 Urinary tract 398,116 1.15 5.95 7,965
infections
160 Calculus of urinary 202,325 0.58 2.65 5,651
tract
161 Other disease of 40,402 0.12 5.50 11,425
kidney and ureters
162 Other disease of 35,482 0.10 4.62 9,282
bladder and urethra
163 Genitourinary symptoms 34,949 0.10 4.34 7,211
and ill-defined conditions
164 Hyperplasia of prostate 145,946 0.42 3.67 7,159
165 Inflammatory 23,632 0.07 4.67 6,729
conditions of male
genital organs
166 Other male genital 20,203 0.06 2.70 8,377
disorders
167 Nonmalignant breast 35,629 0.10 2.25 7,698
conditions
168 Inflammatory disease 93,282 0.27 3.95 7,552
of female pelvic organs
169 Endometriosis 76,818 0.22 3.12 8,087
170 Prolapse of female 145,649 0.42 3.20 7,454
genital organs
171 Menstrual disorders 66,350 0.19 2.78 6,972
172 Ovarian cyst 67,512 0.20 2.94 6,864
173 Menopausal disorders 10,047 0.03 3.19 7,675
174 Female infertility 2,418 0.01 2.23 6,164
175 Other female genital 108,237 0.31 3.33 7,811
disorders
176 Contraceptive and 4,811 0.01 2.01 6,008
procreative management
177 Spontaneous abortion 37,270 0.11 1.24 3,531
178 Induced abortion 19,956 0.06 1.45 3,731
179 Postabortion 4,610 0.01 2.74 5,358
complications
180 Ectopic pregnancy 48,072 0.14 2.48 7,171
181 Other complications 347,883 1.00 2.47 3,989
of pregnancy
182 Hemorrhage during 63,882 0.18 3.88 6,114
pregnancy, abruptio
placenta, placenta previa
183 Hypertension 162,105 0.47 3.31 5,839
complicating pregnancy,
childbirth and the
puerperium
184 Early or threatened 282,015 0.81 2.83 4,586
labor
185 Prolonged pregnancy 106,002 0.31 2.09 4,130
186 Diabetes or abnormal 79,911 0.23 2.63 4,112
glucose tolerance
complicating pregnancy,
childbirth, or the
puerperium
187 Malposition, 152,792 0.44 3.02 5,725
malpresentation
188 Fetopelvic 154,219 0.45 4.72 5,866
disproportion,
obstruction
189 Previous C-section 280,459 0.81 2.67 5,214
190 Fetal distress and 418,422 1.21 2.52 4,792
abnormal forces of labor
191 Polyhydramnios and 206,131 0.60 2.80 4,825
other problems of
amniotic cavity
192 Umbilical cord 270,145 0.78 1.64 3,235
complication
193 Trauma to perineum 652,551 1.88 1.63 3,105
and vulva
194 Forceps delivery 109,517 0.32 1.74 3,447
195 Other complications of 360,015 1.04 2.16 4,162
birth, puerperium
affecting management
of the mother
196 Normal pregnancy 660,745 1.91 1.61 3,038
and/or delivery
197 Skin and subcutaneous 349,565 1.01 6.15 8,041
tissue infections
198 Other inflammatory 10,643 0.03 7.75 12,139
condition of skin
199 Chronic ulcer of skin 79,076 0.23 13.29 17,014
200 Other skin disorders 14,396 0.04 3.68 8,059
201 Infective arthritis and 68,525 0.20 11.43 18,273
osteomyelitis (except
that caused by tuber-
culosis and sexually
transmitted disease)
202 Rheumatoid arthritis 29,825 0.09 5.94 14,248
and related disease
203 Osteoarthritis 371,740 1.07 6.45 19,904
204 Other non-traumatic 43,771 0.13 4.28 8,824
joint disorders
205 Spondylosis, inter- 519,987 1.50 4.18 9,920
vertebral disc disorders,
other back problems
206 Osteoporosis 1,967 0.01 8.97 9,547
207 Pathological fracture 69,860 0.20 8.31 11,434
208 Acquired foot 11,016 0.03 2.40 7,292
deformities
209 Other acquired 28,810 0.08 6.59 18,054
deformities
210 Systemic lupus 18,528 0.05 7.62 14,253
erythematosus and
connective tissue
disorders
211 Other connective 105,812 0.31 4.00 8,159
tissue disease
212 Other bone disease 88,262 0.25 4.53 13,927
and musculoskeletal
deformities
213 Cardiac and circulatory 39,458 0.11 9.37 42,800
congenital anomalies
214 Digestive congenital 19,466 0.06 7.34 19,847
anomalies
215 Genitourinary congenital 14,426 0.04 4.42 10,588
anomalies
216 Nervous system 7,149 0.02 8.54 24,112
congenital anomalies
217 Other congenital 49,616 0.14 4.92 15,206
anomalies
218 Liveborn 3,835,342 11.08 2.86 3,172
219 Short gestation, low 24,555 0.07 23.86 49,404
birth weight, and fetal
growth retardation
220 Intrauterine hypoxia 1,134 0.00 12.75 39,045
and birth asphyxia
221 Respiratory distress 9,349 0.03 24.07 64,083
syndrome
222 Hemolytic jaundice 33,025 0.10 2.43 2,947
and perinatal jaundice
223 Birth trauma 953 0.00 7.85 24,790
224 Other perinatal 53,273 0.15 7.39 16,588
conditions
225 Joint disorders and 79,605 0.23 2.86 9,171
dislocations, trauma-
related
226 Fracture of neck of 322,923 0.93 9.20 17,113
femur (hip)
227 Spinal cord injury 11,361 0.03 17.34 58,199
228 Skull and face fractures 58,252 0.17 4.08 12,972
229 Fracture of upper limb 148,736 0.43 3.73 9,161
230 Fracture of lower limb 278,740 0.81 5.92 12,745
231 Other fractures 168,529 0.49 6.88 12,115
232 Sprains and strains 113,479 0.33 2.60 6,140
233 Intracranial injury 163,654 0.47 7.35 19,906
234 Crushing injury or 100,415 0.29 7.57 25,228
internal injury
235 Open wounds of head, 58,518 0.17 2.93 8,503
neck, and trunk
236 Open wounds of 72,866 0.21 3.66 8,617
extremities
237 Complication of device, 432,790 1.25 6.76 19,454
implant or graft
238 Complications of 313,375 0.91 6.77 12,830
surgical procedures or
medical care
239 Superficial injury, 54,830 0.16 3.61 5,292
contusion
240 Burns 48,507 0.14 11.33 33,942
241 Poisoning by 71,844 0.21 2.68 5,697
psychotropic agents
242 Poisoning by other 144,322 0.42 2.99 5,758
medications and drugs
243 Poisoning by non- 32,849 0.09 3.02 6,346
medicinal substances
244 Other injuries and 89,509 0.26 3.67 7,897
conditions due to
external causes
245 Syncope 183,125 0.53 3.78 6,230
246 Fever of unknown origin 68,349 0.20 4.66 7,240
247 Lymphadenitis 24,221 0.07 3.39 5,820
248 Gangrene 48,409 0.14 13.62 23,109
249 Shock 8,343 0.02 7.14 21,485
250 Nausea and vomiting 27,706 0.08 3.69 5,494
251 Abdominal pain 160,030 0.46 2.98 4,849
252 Malaise and fatigue 10,640 0.03 5.33 5,833
253 Allergic reactions 20,390 0.06 3.24 4,598
254 Rehabilitation care, 274,676 0.79 18.03 18,309
fitting of prostheses,
and adjustment of devices
255 Administrative/social 4,619 0.01 5.60 4,431
admission
256 Medical examination/ 20,472 0.06 2.75 3,265
evaluation
257 Other aftercare 59,649 0.17 8.74 9,721
258 Other screening for 998 0.00 4.60 9,172
suspected conditions
(not mental disorders or
infectious disease)
259 Residual codes, 40,083 0.12 4.27 7,859
unclassified
260 E Codes 202 0.00 4.67 11,175
No diagnosis 4,176 0.01 7.28 8,094
Invalid diagnosis 25,860 0.07 5.17 15,656
Current as of November 1998
AHCPR Publication No.
97-0058
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