Data Set Name: NIS_2001_CORE Number of Observations: 7452727 Total Record Length: 483 Total Number of Variables: 115 Columns Description: ======= ============ 1- 3 Database name 5- 8 Discharge year of data 10- 25 File name 27- 29 Variable number 31- 49 Variable name 51- 53 Starting column of variable in ASCII file 55- 57 Ending column of variable in ASCII file 59 Non-zero number of digits after decimal point for numeric variable 61- 64 Variable type (Num=numeric; Char=character) 66-165 Variable label NIS 2001 CORE 1 KEY 1 14 Num HCUP record identifier NIS 2001 CORE 2 AGE 15 17 Num Age in years at admission NIS 2001 CORE 3 AGEDAY 18 20 Num Age in days (when age < 1 year) NIS 2001 CORE 4 AMONTH 21 22 Num Admission month NIS 2001 CORE 5 ASOURCE 23 24 Num Admission source (uniform) NIS 2001 CORE 6 ASOURCE_X 25 27 Char Admission source (as received from source) NIS 2001 CORE 7 ATYPE 28 29 Num Admission type NIS 2001 CORE 8 AWEEKEND 30 31 Num Admission day is a weekend NIS 2001 CORE 9 DIED 32 33 Num Died during hospitalization NIS 2001 CORE 10 DISCWT 34 43 4 Num Weight to discharges in AHA universe NIS 2001 CORE 11 DISPUB92 44 45 Num Disposition of patient (UB-92 standard coding) NIS 2001 CORE 12 DISPUNIFORM 46 47 Num Disposition of patient (uniform) NIS 2001 CORE 13 DQTR 48 49 Num Discharge quarter NIS 2001 CORE 14 DRG 50 52 Num DRG in effect on discharge date NIS 2001 CORE 15 DRG18 53 55 Num DRG, version 18 NIS 2001 CORE 16 DRGVER 56 57 Num DRG grouper version used on discharge date NIS 2001 CORE 17 DSHOSPID 58 70 Char Data source hospital identifier NIS 2001 CORE 18 DX1 71 75 Char Principal diagnosis NIS 2001 CORE 19 DX2 76 80 Char Diagnosis 2 NIS 2001 CORE 20 DX3 81 85 Char Diagnosis 3 NIS 2001 CORE 21 DX4 86 90 Char Diagnosis 4 NIS 2001 CORE 22 DX5 91 95 Char Diagnosis 5 NIS 2001 CORE 23 DX6 96 100 Char Diagnosis 6 NIS 2001 CORE 24 DX7 101 105 Char Diagnosis 7 NIS 2001 CORE 25 DX8 106 110 Char Diagnosis 8 NIS 2001 CORE 26 DX9 111 115 Char Diagnosis 9 NIS 2001 CORE 27 DX10 116 120 Char Diagnosis 10 NIS 2001 CORE 28 DX11 121 125 Char Diagnosis 11 NIS 2001 CORE 29 DX12 126 130 Char Diagnosis 12 NIS 2001 CORE 30 DX13 131 135 Char Diagnosis 13 NIS 2001 CORE 31 DX14 136 140 Char Diagnosis 14 NIS 2001 CORE 32 DX15 141 145 Char Diagnosis 15 NIS 2001 CORE 33 DXCCS1 146 149 Num CCS: principal diagnosis NIS 2001 CORE 34 DXCCS2 150 153 Num CCS: diagnosis 2 NIS 2001 CORE 35 DXCCS3 154 157 Num CCS: diagnosis 3 NIS 2001 CORE 36 DXCCS4 158 161 Num CCS: diagnosis 4 NIS 2001 CORE 37 DXCCS5 162 165 Num CCS: diagnosis 5 NIS 2001 CORE 38 DXCCS6 166 169 Num CCS: diagnosis 6 NIS 2001 CORE 39 DXCCS7 170 173 Num CCS: diagnosis 7 NIS 2001 CORE 40 DXCCS8 174 177 Num CCS: diagnosis 8 NIS 2001 CORE 41 DXCCS9 178 181 Num CCS: diagnosis 9 NIS 2001 CORE 42 DXCCS10 182 185 Num CCS: diagnosis 10 NIS 2001 CORE 43 DXCCS11 186 189 Num CCS: diagnosis 11 NIS 2001 CORE 44 DXCCS12 190 193 Num CCS: diagnosis 12 NIS 2001 CORE 45 DXCCS13 194 197 Num CCS: diagnosis 13 NIS 2001 CORE 46 DXCCS14 198 201 Num CCS: diagnosis 14 NIS 2001 CORE 47 DXCCS15 202 205 Num CCS: diagnosis 15 NIS 2001 CORE 48 FEMALE 206 207 Num Indicator of sex NIS 2001 CORE 49 HOSPID 208 212 Num HCUP hospital identification number NIS 2001 CORE 50 HOSPST 213 214 Char Hospital state postal code NIS 2001 CORE 51 HOSPSTCO 215 219 Num Hospital modified FIPS state/county code NIS 2001 CORE 52 LOS 220 224 Num Length of stay (cleaned) NIS 2001 CORE 53 LOS_X 225 230 Num Length of stay (as received from source) NIS 2001 CORE 54 MDC 231 232 Num MDC in effect on discharge date NIS 2001 CORE 55 MDC18 233 234 Num MDC, version 18 NIS 2001 CORE 56 MDNUM1_S 235 250 Char Physician 1 number (synthetic) NIS 2001 CORE 57 MDNUM2_S 251 266 Char Physician 2 number (synthetic) NIS 2001 CORE 58 NDX 267 268 Num Number of diagnoses on this record NIS 2001 CORE 59 NEOMAT 269 270 Num Neonatal and/or maternal DX and/or PR NIS 2001 CORE 60 NIS_STRATUM 271 274 Num Stratum used to sample hospital NIS 2001 CORE 61 NPR 275 276 Num Number of procedures on this record NIS 2001 CORE 62 PAY1 277 278 Num Primary expected payer (uniform) NIS 2001 CORE 63 PAY1_X 279 288 Char Primary expected payer (as received from source) NIS 2001 CORE 64 PAY2 289 290 Num Secondary expected payer (uniform) NIS 2001 CORE 65 PAY2_X 291 300 Char Secondary expected payer (as received from source) NIS 2001 CORE 66 PR1 301 304 Char Principal procedure NIS 2001 CORE 67 PR2 305 308 Char Procedure 2 NIS 2001 CORE 68 PR3 309 312 Char Procedure 3 NIS 2001 CORE 69 PR4 313 316 Char Procedure 4 NIS 2001 CORE 70 PR5 317 320 Char Procedure 5 NIS 2001 CORE 71 PR6 321 324 Char Procedure 6 NIS 2001 CORE 72 PR7 325 328 Char Procedure 7 NIS 2001 CORE 73 PR8 329 332 Char Procedure 8 NIS 2001 CORE 74 PR9 333 336 Char Procedure 9 NIS 2001 CORE 75 PR10 337 340 Char Procedure 10 NIS 2001 CORE 76 PR11 341 344 Char Procedure 11 NIS 2001 CORE 77 PR12 345 348 Char Procedure 12 NIS 2001 CORE 78 PR13 349 352 Char Procedure 13 NIS 2001 CORE 79 PR14 353 356 Char Procedure 14 NIS 2001 CORE 80 PR15 357 360 Char Procedure 15 NIS 2001 CORE 81 PRCCS1 361 363 Num CCS: principal procedure NIS 2001 CORE 82 PRCCS2 364 366 Num CCS: procedure 2 NIS 2001 CORE 83 PRCCS3 367 369 Num CCS: procedure 3 NIS 2001 CORE 84 PRCCS4 370 372 Num CCS: procedure 4 NIS 2001 CORE 85 PRCCS5 373 375 Num CCS: procedure 5 NIS 2001 CORE 86 PRCCS6 376 378 Num CCS: procedure 6 NIS 2001 CORE 87 PRCCS7 379 381 Num CCS: procedure 7 NIS 2001 CORE 88 PRCCS8 382 384 Num CCS: procedure 8 NIS 2001 CORE 89 PRCCS9 385 387 Num CCS: procedure 9 NIS 2001 CORE 90 PRCCS10 388 390 Num CCS: procedure 10 NIS 2001 CORE 91 PRCCS11 391 393 Num CCS: procedure 11 NIS 2001 CORE 92 PRCCS12 394 396 Num CCS: procedure 12 NIS 2001 CORE 93 PRCCS13 397 399 Num CCS: procedure 13 NIS 2001 CORE 94 PRCCS14 400 402 Num CCS: procedure 14 NIS 2001 CORE 95 PRCCS15 403 405 Num CCS: procedure 15 NIS 2001 CORE 96 PRDAY1 406 408 Num Number of days from admission to PR1 NIS 2001 CORE 97 PRDAY2 409 411 Num Number of days from admission to PR2 NIS 2001 CORE 98 PRDAY3 412 414 Num Number of days from admission to PR3 NIS 2001 CORE 99 PRDAY4 415 417 Num Number of days from admission to PR4 NIS 2001 CORE 100 PRDAY5 418 420 Num Number of days from admission to PR5 NIS 2001 CORE 101 PRDAY6 421 423 Num Number of days from admission to PR6 NIS 2001 CORE 102 PRDAY7 424 426 Num Number of days from admission to PR7 NIS 2001 CORE 103 PRDAY8 427 429 Num Number of days from admission to PR8 NIS 2001 CORE 104 PRDAY9 430 432 Num Number of days from admission to PR9 NIS 2001 CORE 105 PRDAY10 433 435 Num Number of days from admission to PR10 NIS 2001 CORE 106 PRDAY11 436 438 Num Number of days from admission to PR11 NIS 2001 CORE 107 PRDAY12 439 441 Num Number of days from admission to PR12 NIS 2001 CORE 108 PRDAY13 442 444 Num Number of days from admission to PR13 NIS 2001 CORE 109 PRDAY14 445 447 Num Number of days from admission to PR14 NIS 2001 CORE 110 PRDAY15 448 450 Num Number of days from admission to PR15 NIS 2001 CORE 111 RACE 451 452 Num Race (uniform) NIS 2001 CORE 112 TOTCHG 453 462 Num Total charges (cleaned) NIS 2001 CORE 113 TOTCHG_X 463 477 2 Num Total charges (as received from source) NIS 2001 CORE 114 YEAR 478 481 Num Calendar year NIS 2001 CORE 115 ZIPINC 482 483 Num Median household income category for patient's ZIP Code