Statistics From the HCUP-3 Nationwide Inpatient Sample for 1994: Principal Procedures

Overview

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.

HCUP-3 Nationwide Inpatient Sample

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 hereódischarges, 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.

Definitions

PCCHPR: 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 PCCHPR Version 2 was used to classify principal procedures into 231 procedure categories. All valid procedure codes are classified.

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)]


PCCHPR
categories     Subject areas                                     

  1 - 9         1    Operations on the Nervous System
 10 - 12        2    Operations on the Endocrine System
 13 - 21        3    Operations on the Eye
 22 - 26        4    Operations on the Ear
 27 - 33        5    Operations on the Nose, Mouth, and Pharynx
 34 - 42        6    Operations on the Respiratory System
 43 - 63        7    Operations on the Cardiovascular System
 64 - 67        8    Operations on the Hemic and Lymphatic System
 68 - 99        9    Operations on the Digestive System
100 - 112      10    Operations on the Urinary System
113 - 118      11    Operations on the Male Genital Organs
119 - 121      12    Operations on the Female Genital Organs
123 - 132
   122         13    Obstetrical Procedures
133 - 141
142 - 164      14    Operations on the Musculoskeletal System
165 - 175      15    Operations on the Integumentary System
176 - 231      16    Miscellaneous Diagnostic and Therapeutic Procedures

Statistics From the Nationwide Inpatient Sample for 1994 Hospital Inpatient Stays


PCCHPR -                  Total        % of total               Mean total 
principal procedures      discharges   discharges    Mean LOS      charges

Total                     34,622,215       100.00        5.55       10,275 

No procedure              13,030,181        37.64        4.75        5,576 

1   Incision and excision     72,134         0.21       11.71       35,163 
    of CNS
2   Insertion, replacement,   27,407         0.08       10.53       27,808 
    or removal of extracranial 
    ventricular shunt
3   Laminectomy, excision    365,275         1.06        4.05       11,862 
    intervertebral disc
4   Diagnostic spinal tap    278,752         0.81        6.59       10,729 
5   Insertion of catheter or  49,981         0.14        6.52       10,284 
    spinal stimulator and 
    injection into spinal 
    canal
6   Decompression peripheral   6,520         0.02        2.83        7,768 
    nerve
7   Other diagnostic nervous  15,150         0.04       11.37       33,476 
    system procedures
8   Other non-OR or closed    12,287         0.04        7.06        9,723 
    therapeutic nervous 
    system procedures
9   Other OR therapeutic      59,904         0.17        8.79       27,760 
    nervous system procedures
10  Thyroidectomy, partial    48,600         0.14        2.43        7,769 
    or complete
11  Diagnostic endocrine       2,083         0.01        7.95       13,524 
    procedures
12  Other therapeutic         25,802         0.07        5.48       15,765 
    endocrine procedures
13  Corneal transplant         7,443         0.02        2.07        7,530 
14  Glaucoma procedures        9,785         0.03        2.16        4,489 
15  Lens and cataract         13,256         0.04        3.42        6,661 
    procedures
16  Repair of retinal tear,   18,563         0.05        1.86        6,726 
    detachment
17  Destruction of lesion      1,539         0.00       17.75       40,789 
    of retina and choroid
18  Diagnostic procedures      1,414         0.00        5.34        8,955 
    on eye
19  Other therapeutic         21,029         0.06        4.21        9,119 
    procedures on eyelids, 
    conjunctiva, cornea
20  Other intraocular         30,052         0.09        2.37        6,867 
    therapeutic procedures
21  Other extraocular          8,801         0.03        3.93       10,764 
    muscle and orbit 
    therapeutic procedures
22  Tympanoplasty              2,628         0.01        1.38        6,371 
23  Myringotomy                6,389         0.02        4.34        9,228 
24  Mastoidectomy              5,964         0.02        2.36        8,819 
25  Diagnostic procedures        406         0.00        9.24       14,732 
    on ear
26  Other therapeutic ear     14,909         0.04        3.90        8,780 
    procedures
27  Control of epistaxis      18,049         0.05        4.60        7,418 
28  Plastic procedures        14,837         0.04        2.24        6,858 
    on nose
29  Dental procedures         12,977         0.04        8.21       12,048 
30  Tonsillectomy and/or      33,808         0.10        1.70        4,574 
    adenoidectomy
31  Diagnostic procedures      6,522         0.02        8.15       14,690 
    on nose, mouth and pharynx
32  Other non-OR therapeutic  14,345         0.04        4.66        9,699 
    procedures on nose, 
    mouth and pharynx
33  Other OR therapeutic      76,410         0.22        3.86       10,768 
    procedures on nose, 
    mouth and pharynx
34  Tracheostomy, temporary   57,479         0.17       43.13      144,582 
    and permanent
35  Tracheoscopy and          28,963         0.08        5.82        8,662 
    laryngoscopy with biopsy
36  Lobectomy or              59,225         0.17       10.36       29,189 
    pneumonectomy
37  Diagnostic bronchoscopy  183,070         0.53       11.81       21,870 
    and biopsy of bronchus
38  Other diagnostic          13,988         0.04       11.51       34,067 
    procedures on lung 
    and bronchus
39  Incision of pleura,      165,329         0.48        9.22       15,449 
    thoracentesis, chest 
    drainage
40  Other diagnostic          19,759         0.06        9.58       19,471 
    procedures of respiratory 
    tract and mediastinum
41  Other non-OR therapeutic  12,876         0.04        8.62       16,067 
    procedures on respiratory 
    system
42  Other OR therapeutic      40,475         0.12       11.73       30,474 
    procedures on respiratory 
    system
43  Heart valve procedures    67,543         0.20       13.60       63,096 
44  Coronary artery bypass   319,242         0.92       10.85       47,318 
    graft (CABG)
45  Percutaneous coronary    409,969         1.18        4.34       19,277 
    angioplasty (PTCA)
46  Coronary thrombolysis      1,194         0.00        4.77       14,712 
47  Diagnostic cardiac       610,891         1.76        4.57       11,857 
    catheterization, 
    coronary arteriography
48  Insertion, revision,     190,410         0.55        6.68       25,712 
    replacement, removal 
    of cardiac pacemaker or
    cardioverter/defibrillator
49  Other OR heart            67,848         0.20        8.02       37,995 
    procedures
50  Extracorporeal             1,244         0.00       18.61      112,197 
    circulation auxiliary to 
    open heart procedures
51  Endarterectomy, vessel   106,362         0.31        4.75       14,245 
    of head and neck
52  Aortic resection,         43,487         0.13       11.47       40,544 
    replacement or anastomosis
53  Varicose vein stripping,   6,842         0.02        2.64        6,216 
    lower limb
54  Other vascular           185,114         0.53       11.73       23,955 
    catheterization, not 
    heart
55  Peripheral vascular      104,157         0.30       10.62       27,299 
    bypass
56  Other vascular bypass     11,090         0.03       12.11       46,535 
    and shunt, not heart
57  Creation, revision and    72,332         0.21        9.40       21,389 
    removal of arteriovenous 
    fistula or vessel-to-
    vessel cannula for 
    dialysis
58  Hemodialysis             127,503         0.37        6.31       11,564 
59  Other OR procedures on     4,364         0.01        8.21       29,665 
    vessels of head and neck
60  Embolectomy and           20,810         0.06        9.48       24,184 
    endarterectomy of 
    lower limbs
61  Other OR procedures on   180,166         0.52        9.55       29,320 
    vessels other than head 
    and neck
62  Other diagnostic cardio-  41,322         0.12        6.40       14,715 
    vascular procedures
63  Other non-OR therapeutic  37,443         0.11        9.76       21,823 
    cardiovascular procedures
64  Bone marrow transplant     7,310         0.02       34.93      168,513 
65  Bone marrow biopsy        69,381         0.20       10.68       20,128 
66  Procedures on spleen      20,715         0.06       10.06       32,840 
67  Other therapeutic         58,959         0.17        6.43       15,851 
    procedures, hemic and 
    lymphatic system
68  Injection or ligation        329         0.00        9.50       31,613 
    of esophageal varices
69  Esophageal dilatation     10,261         0.03        7.02       10,303 
70  Upper gastrointestinal   621,369         1.79        6.77       10,985 
    endoscopy, biopsy
71  Gastrostomy, temporary    85,265         0.25       16.58       23,576 
    and permanent
72  Colostomy, temporary      13,300         0.04       14.91       33,048 
    and permanent
73  Ileostomy and other        5,761         0.02       17.88       38,425 
    enterostomy
74  Gastrectomy, partial      24,320         0.07       16.60       43,914 
    and total
75  Small bowel resection     44,153         0.13       16.24       42,138 
76  Colonoscopy and biopsy   245,530         0.71        7.27       10,659 
77  Proctoscopy and           16,564         0.05        6.92       10,667 
    anorectal biopsy
78  Colorectal resection     242,399         0.70       12.29       27,887 
79  Local excision of          1,603         0.00        7.68       14,569 
    large intestine lesion 
    (not endoscopic)
80  Appendectomy             233,060         0.67        3.93        8,992 
81  Hemorrhoid procedures     20,514         0.06        2.98        5,636 
82  Endoscopic cannulation    39,465         0.11        7.35       13,191 
    of pancreas (ERCP)
83  Biopsy of liver           30,275         0.09        9.23       17,685 
84  Cholecystectomy and      447,538         1.29        4.91       12,964 
    common duct exploration
85  Inguinal and femoral      67,139         0.19        5.04       11,316 
    hernia repair
86  Other hernia repair       89,981         0.26        5.10       11,890 
87  Laparoscopy               23,794         0.07        3.97       10,411 
88  Abdominal paracentesis    53,932         0.16        8.97       14,774 
89  Exploratory laparotomy    29,763         0.09        9.35       25,807 
90  Excision, lysis           67,592         0.20        9.99       21,285 
    peritoneal adhesions
91  Peritoneal dialysis       21,560         0.06        6.66       11,332 
92  Other GI diagnostic        8,504         0.02        7.48       16,731 
    procedures
93  Other non-OR upper GI     88,843         0.26        6.15       12,024 
    therapeutic procedures
94  Other OR upper GI         80,991         0.23       11.47       30,153 
    therapeutic procedures
95  Other non-OR lower GI     53,403         0.15        6.86       10,296 
    therapeutic procedures
96  Other OR lower GI        112,384         0.32        8.91       19,427 
    therapeutic procedures
97  Other gastrointestinal    14,635         0.04       10.23       18,757 
    diagnostic procedures
98  Other non-OR gastro-      46,356         0.13        6.82       13,069 
    intestinal therapeutic 
    procedures
99  Other OR gastro-         100,107         0.29       12.55       31,401 
    intestinal therapeutic 
    procedures
100 Endoscopy and endoscopic  80,756         0.23        7.70       11,182 
    biopsy of the urinary 
    tract
101 Transurethral excision,  100,765         0.29        3.84        8,050 
    drainage, or removal 
    urinary obstruction
102 Ureteral catheterization  29,709         0.09        4.80       10,378 
103 Nephrotomy and            21,791         0.06        8.78       19,480 
    nephrostomy
104 Nephrectomy, partial      38,083         0.11        8.72       22,046 
    or complete
105 Kidney transplant         13,153         0.04       13.93       72,158 
106 Genitourinary             43,654         0.13        3.20        7,084 
    incontinence procedures
107 Extracorporeal             6,417         0.02        3.39       10,025 
    lithotripsy, urinary
108 Indwelling catheter       13,981         0.04        6.96        8,026 
109 Procedures on the urethra 25,511         0.07        5.25        9,858 
110 Other diagnostic          21,882         0.06        6.93       14,176 
    procedures of urinary  
    tract
111 Other non-OR therapeutic  23,230         0.07        4.72        7,619 
    procedures of urinary  
    tract
112 Other OR therapeutic      55,727         0.16        8.10       18,810 
    procedures of urinary  
    tract
113 Transurethral            187,857         0.54        4.45        8,146 
    prostatectomy (TURP)
114 Open prostatectomy        69,366         0.20        5.87       14,525 
115 Circumcision           1,041,441         3.01        2.29        1,600 
116 Diagnostic procedures,     5,313         0.02        9.38       13,369 
    male genital
117 Other non-OR therapeutic   5,066         0.01        6.28       11,124 
    procedures, male 
    genital
118 Other OR therapeutic      38,833         0.11        3.88        9,945 
    procedures, male genital
119 Oophorectomy,             70,386         0.20        4.25        9,939 
    unilateral and bilateral
120 Other operations on ovary 37,986         0.11        3.14        8,036 
121 Ligation of fallopian     72,123         0.21        2.02        5,313 
    tubes 
122 Removal ectopic pregnancy 27,597         0.08        2.61        7,433 
123 Other operations on       15,320         0.04        2.77        7,468 
    fallopian tubes
124 Hysterectomy, abdominal  510,348         1.47        3.66        8,994 
    and vaginal
125 Other excision of         35,618         0.10        3.22        8,157 
    cervix and uterus
126 Abortion (termination      7,294         0.02        2.31        4,847 
    of pregnancy)
127 Dilatation and curettage  57,322         0.17        1.56        4,575 
    (D&C), aspiration after 
    delivery or abortion
128 Diagnostic dilatation     17,820         0.05        4.19        7,694 
    and curettage (D&C)
129 Repair of cystocele and   47,869         0.14        2.92        6,403 
    rectocele, obliteration 
    of vaginal vault
130 Other diagnostic           9,195         0.03        7.58       11,398 
    procedures, female organs
131 Other non-OR therapeutic   7,738         0.02        3.08        5,846 
    procedures, female organs
132 Other OR therapeutic      50,398         0.15        3.85        9,270 
    procedures, female organs
133 Episiotomy               760,435         2.20        1.77        3,247 
134 Cesarean section         809,530         2.34        3.78        7,158 
135 Forceps, vacuum, and     372,715         1.08        1.91        3,748 
    breech delivery
136 Artificial rupture of     72,646         0.21        1.60        3,073 
    membranes to assist 
    delivery
137 Other procedures to    1,048,869         3.03        1.75        3,398 
    assist delivery
138 Diagnostic amniocentesis   9,403         0.03        4.93        6,761 
139 Fetal monitoring          94,862         0.27        2.18        3,380 
140 Repair of current        513,104         1.48        1.71        3,129 
    obstetric laceration
141 Other therapeutic          9,939         0.03        1.99        3,818 
    obstetrical procedures
142 Partial excision bone     42,240         0.12        5.71       13,975 
143 Bunionectomy or repair     7,106         0.02        2.21        6,302 
    of toe deformities
144 Treatment, facial         30,762         0.09        4.26       14,329 
    fracture or dislocation
145 Treatment, fracture or    61,228         0.18        3.49        9,373 
    dislocation of radius 
    and ulna
146 Treatment, fracture or   271,910         0.79        8.65       17,227 
    dislocation of hip 
    and femur
147 Treatment, fracture or   191,461         0.55        4.72       11,237 
    dislocation of lower 
    extremity (other than 
    hip or femur)
148 Other fracture and        85,331         0.25        4.53       12,194 
    dislocation procedure
149 Arthroscopy                6,889         0.02        3.37        9,591 
150 Division of joint          6,098         0.02        2.99        8,611 
    capsule, ligament or 
    cartilage
151 Excision of semilunar     12,207         0.04        2.41        9,064 
    cartilage of knee
152 Arthroplasty knee        295,052         0.85        5.69       19,353 
153 Hip replacement, total   277,023         0.80        7.83       22,122 
    and partial
154 Arthroplasty other than   68,768         0.20        2.41        8,657 
    hip or knee
155 Arthrocentesis            28,816         0.08        7.43        9,625 
156 Injections and             4,762         0.01        8.02       10,574 
    aspirations of muscles, 
    tendons, bursa, joints 
    and soft tissue
157 Amputation of lower      105,183         0.30       14.28       24,178 
    extremity
158 Spinal fusion             56,399         0.16        7.16       25,895 
159 Other diagnostic          23,362         0.07       11.54       20,335 
    procedures on 
    musculoskeletal system
160 Other therapeutic        116,281         0.34        3.65        9,320 
    procedures on 
    muscles and tendons
161 Other OR therapeutic      41,442         0.12        4.92       13,538 
    procedures on bone
162 Other OR therapeutic      64,111         0.19        5.91       13,736 
    procedures on joints
163 Other non-OR therapeutic   8,871         0.03        8.91        9,782 
    procedures on 
    musculoskeletal system
164 Other OR therapeutic      37,820         0.11        4.70       13,704 
    procedures on 
    musculoskeletal system
165 Breast biopsy and other    5,645         0.02        7.77       12,226 
    diagnostic procedures 
    on breast
166 Lumpectomy,               33,343         0.10        2.94        7,220 
    quadrantectomy of breast
167 Mastectomy               108,204         0.31        3.07        8,070 
168 Incision and drainage,    67,918         0.20        7.06       10,220 
    skin and subcutaneous 
    tissue
169 Debridement of wound,    220,744         0.64       12.68       22,003 
    infection or burn
170 Excision of skin lesion   29,966         0.09        8.24       12,978 
171 Suture of skin and        69,887         0.20        4.27        7,474 
    subcutaneous tissue
172 Skin graft                36,281         0.10       13.76       30,727 
173 Other diagnostic          13,875         0.04       10.00       15,240 
    procedures on 
    skin and subcutaneous 
    tissue
174 Other non-OR therapeutic 130,346         0.38       11.36       20,332 
    procedures on skin and 
    breast
175 Other OR therapeutic      57,359         0.17        2.96       10,176 
    procedures on skin and 
    breast
176 Other organ                6,231         0.02       32.42      191,697 
    transplantation
177 Computerized axial       350,617         1.01        6.77        9,516 
    tomography (CT) scan head
178 CT scan chest             29,948         0.09        7.58       10,875 
179 CT scan abdomen           98,266         0.28        6.01        9,242 
180 Other CT scan             24,426         0.07        6.59        8,715 
181 Myelogram                 16,653         0.05        4.52        7,220 
182 Mammography                1,819         0.01        8.53        7,694 
183 Routine chest X-ray       10,514         0.03        5.99        6,641 
184 Intraoperative               612         0.00        8.56       14,947 
    cholangiogram
185 Upper gastrointestinal    25,082         0.07        6.73        8,591 
    X-ray
186 Lower gastrointestinal     7,970         0.02        5.62        7,136 
    X-ray
187 Intravenous pyelogram     42,402         0.12        3.31        4,594 
188 Cerebral arteriogram      32,142         0.09        6.05       12,203 
189 Contrast aortogram        14,437         0.04        4.81       10,989 
190 Contrast arteriogram      15,249         0.04        5.50       11,045 
    of femoral and lower 
    extremity arteries
191 Arterio- or venogram      35,325         0.10        6.12       10,520 
    (not heart and head)
192 Diagnostic ultrasound     35,013         0.10        6.89       10,710 
    of head and neck
193 Diagnostic ultrasound    273,702         0.79        6.01       10,014 
    of heart (echocardiogram)
194 Diagnostic ultrasound     21,953         0.06        4.86        6,185 
    of gastrointestinal tract
195 Diagnostic ultrasound     40,456         0.12        6.45        9,070 
    of urinary tract
196 Diagnostic ultrasound     78,069         0.23        5.29        8,066 
    of abdomen or 
    retroperitoneum
197 Other diagnostic          91,420         0.26        5.63        7,747 
    ultrasound
198 Magnetic resonance        90,436         0.26        7.24       10,467 
    imaging
199 Electroencephalogram      40,745         0.12        8.13       10,524 
    (EEG)
200 Nonoperative urinary         733         0.00        4.86        6,433 
    system measurements
201 Cardiac stress tests      89,386         0.26        3.16        6,121 
202 Electrocardiogram         46,029         0.13        5.48        7,395 
203 Electrographic cardiac   118,375         0.34        3.94        5,964 
    monitoring
204 Swan-Ganz                 22,920         0.07        9.53       26,244 
    catheterization for 
    monitoring
205 Arterial blood gases      94,814         0.27        6.15        9,148 
206 Microscopic examination   12,783         0.04        4.95        4,233 
    (bacterial smear, 
    culture, toxicology)
207 Radioisotope bone scan    26,228         0.08        8.12        9,930 
208 Radioisotope pulmonary    42,543         0.12        6.19       10,118 
    scan
209 Radioisotope scan and     43,332         0.13        6.05        9,211 
    function studies
210 Other radioisotope scan    5,097         0.01        8.24       11,233 
211 Therapeutic radiology     74,619         0.22        7.89       11,919 
212 Diagnostic physical        7,965         0.02       13.85       15,447 
    therapy
213 Physical therapy         141,853         0.41       13.57       14,195 
    exercises, manipulation, 
    and other procedures
214 Traction, splints, and    45,851         0.13        7.17        8,821 
    other wound care
215 Other physical therapy    47,319         0.14       15.20       14,102 
    and rehabilitation
216 Respiratory intubation   435,961         1.26       11.97       31,841 
    and mechanical 
    ventilation
217 Other respiratory        208,884         0.60        4.98        7,337 
    therapy
218 Psychological and        142,397         0.41       15.79       13,989 
    psychiatric evaluation 
    and therapy
219 Alcohol and drug         435,777         1.26        7.26        5,148 
    rehabilitation/
    detoxification
220 Ophthalmologic and         4,817         0.01        5.34        6,771 
    otologic diagnosis and 
    treatment
221 Nasogastric tube          40,780         0.12        5.14        7,332 
222 Blood transfusion        178,854         0.52        6.93       11,175 
223 Enteral and parenteral    44,039         0.13       13.33       19,369 
    nutrition
224 Cancer chemotherapy      334,507         0.97        4.23       10,412 
225 Conversion of cardiac     72,478         0.21        4.71        8,822 
    rhythm
226 Other diagnostic          54,097         0.16        6.52       10,336 
    radiology and related 
    techniques
227 Other diagnostic          61,460         0.18        7.27       11,534 
    procedures (interview, 
    evaluation, consultation)
228 Prophylactic             267,498         0.77        2.27        1,523 
    vaccinations and 
    inoculations
229 Nonoperative removal       5,370         0.02        3.38        6,554 
    of foreign body
230 Extracorporeal shock wave     54         0.00        4.75       13,553 
    lithotripsy, other than 
    urinary
231 Other therapeutic        430,856         1.24        6.29        9,287 
    procedures

Invalid procedure              2,552         0.01        4.72        6,496 

Current as of November 1998
AHCPR Publication No. 97-0057

Send Questions & Comments to: hcup@ahrq.gov


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