Data Set Name: NIS_1999_CORE Number of Observations: 7198929 Total Record Length: 484 Total Number of Variables: 116 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 1999 CORE 1 KEY 1 14 Num HCUP record identifier NIS 1999 CORE 2 AGE 15 17 Num Age in years at admission NIS 1999 CORE 3 AGEDAY 18 20 Num Age in days (when age < 1 year) NIS 1999 CORE 4 AMONTH 21 22 Num Admission month NIS 1999 CORE 5 ASOURCE 23 24 Num Admission source (uniform) NIS 1999 CORE 6 ASOURCE_X 25 27 Char Admission source (as received from source) NIS 1999 CORE 7 ATYPE 28 29 Num Admission type NIS 1999 CORE 8 AWEEKEND 30 31 Num Admission day is a weekend NIS 1999 CORE 9 DIED 32 33 Num Died during hospitalization NIS 1999 CORE 10 DISCWT 34 43 4 Num Weight to discharges in AHA Universe NIS 1999 CORE 11 DISPUB92 44 45 Num Disposition of patient (UB-92 standard coding) NIS 1999 CORE 12 DISPUNIFORM 46 47 Num Disposition of patient (uniform) NIS 1999 CORE 13 DQTR 48 49 Num Discharge quarter NIS 1999 CORE 14 DRG 50 52 Num DRG in effect on discharge date NIS 1999 CORE 15 DRG10 53 55 Num DRG, version 10 NIS 1999 CORE 16 DRG18 56 58 Num DRG, version 18 NIS 1999 CORE 17 DRGVER 59 60 Num DRG grouper version used on discharge date NIS 1999 CORE 18 DSHOSPID 61 73 Char Data source hospital identifier NIS 1999 CORE 19 DX1 74 78 Char Principal diagnosis NIS 1999 CORE 20 DX2 79 83 Char Diagnosis 2 NIS 1999 CORE 21 DX3 84 88 Char Diagnosis 3 NIS 1999 CORE 22 DX4 89 93 Char Diagnosis 4 NIS 1999 CORE 23 DX5 94 98 Char Diagnosis 5 NIS 1999 CORE 24 DX6 99 103 Char Diagnosis 6 NIS 1999 CORE 25 DX7 104 108 Char Diagnosis 7 NIS 1999 CORE 26 DX8 109 113 Char Diagnosis 8 NIS 1999 CORE 27 DX9 114 118 Char Diagnosis 9 NIS 1999 CORE 28 DX10 119 123 Char Diagnosis 10 NIS 1999 CORE 29 DX11 124 128 Char Diagnosis 11 NIS 1999 CORE 30 DX12 129 133 Char Diagnosis 12 NIS 1999 CORE 31 DX13 134 138 Char Diagnosis 13 NIS 1999 CORE 32 DX14 139 143 Char Diagnosis 14 NIS 1999 CORE 33 DX15 144 148 Char Diagnosis 15 NIS 1999 CORE 34 DXCCS1 149 152 Num CCS: principal diagnosis NIS 1999 CORE 35 DXCCS2 153 156 Num CCS: diagnosis 2 NIS 1999 CORE 36 DXCCS3 157 160 Num CCS: diagnosis 3 NIS 1999 CORE 37 DXCCS4 161 164 Num CCS: diagnosis 4 NIS 1999 CORE 38 DXCCS5 165 168 Num CCS: diagnosis 5 NIS 1999 CORE 39 DXCCS6 169 172 Num CCS: diagnosis 6 NIS 1999 CORE 40 DXCCS7 173 176 Num CCS: diagnosis 7 NIS 1999 CORE 41 DXCCS8 177 180 Num CCS: diagnosis 8 NIS 1999 CORE 42 DXCCS9 181 184 Num CCS: diagnosis 9 NIS 1999 CORE 43 DXCCS10 185 188 Num CCS: diagnosis 10 NIS 1999 CORE 44 DXCCS11 189 192 Num CCS: diagnosis 11 NIS 1999 CORE 45 DXCCS12 193 196 Num CCS: diagnosis 12 NIS 1999 CORE 46 DXCCS13 197 200 Num CCS: diagnosis 13 NIS 1999 CORE 47 DXCCS14 201 204 Num CCS: diagnosis 14 NIS 1999 CORE 48 DXCCS15 205 208 Num CCS: diagnosis 15 NIS 1999 CORE 49 FEMALE 209 210 Num Indicator of sex NIS 1999 CORE 50 HOSPID 211 215 Num HCUP hospital identification number NIS 1999 CORE 51 HOSPST 216 217 Char Hospital state postal code NIS 1999 CORE 52 HOSPSTCO 218 222 Num Hospital modified FIPS state/county code NIS 1999 CORE 53 LOS 223 227 Num Length of stay (cleaned) NIS 1999 CORE 54 LOS_X 228 233 Num Length of stay (uncleaned) NIS 1999 CORE 55 MDC 234 235 Num MDC in effect on discharge date NIS 1999 CORE 56 MDC10 236 237 Num MDC, version 10 NIS 1999 CORE 57 MDC18 238 239 Num MDC, version 18 NIS 1999 CORE 58 MDID_S 240 255 Char Attending physician number (synthetic) NIS 1999 CORE 59 NDX 256 257 Num Number of diagnoses on this record NIS 1999 CORE 60 NEOMAT 258 259 Num Neonatal and/or maternal DX and/or PR NIS 1999 CORE 61 NPR 260 261 Num Number of procedures on this record NIS 1999 CORE 62 PAY1 262 263 Num Primary expected payer (uniform) NIS 1999 CORE 63 PAY1_X 264 273 Char Primary expected payer (as received from source) NIS 1999 CORE 64 PAY2 274 275 Num Secondary expected payer (uniform) NIS 1999 CORE 65 PAY2_X 276 285 Char Secondary expected payer (as received from source) NIS 1999 CORE 66 PR1 286 289 Char Principal procedure NIS 1999 CORE 67 PR2 290 293 Char Procedure 2 NIS 1999 CORE 68 PR3 294 297 Char Procedure 3 NIS 1999 CORE 69 PR4 298 301 Char Procedure 4 NIS 1999 CORE 70 PR5 302 305 Char Procedure 5 NIS 1999 CORE 71 PR6 306 309 Char Procedure 6 NIS 1999 CORE 72 PR7 310 313 Char Procedure 7 NIS 1999 CORE 73 PR8 314 317 Char Procedure 8 NIS 1999 CORE 74 PR9 318 321 Char Procedure 9 NIS 1999 CORE 75 PR10 322 325 Char Procedure 10 NIS 1999 CORE 76 PR11 326 329 Char Procedure 11 NIS 1999 CORE 77 PR12 330 333 Char Procedure 12 NIS 1999 CORE 78 PR13 334 337 Char Procedure 13 NIS 1999 CORE 79 PR14 338 341 Char Procedure 14 NIS 1999 CORE 80 PR15 342 345 Char Procedure 15 NIS 1999 CORE 81 PRCCS1 346 348 Num CCS: principal procedure NIS 1999 CORE 82 PRCCS2 349 351 Num CCS: procedure 2 NIS 1999 CORE 83 PRCCS3 352 354 Num CCS: procedure 3 NIS 1999 CORE 84 PRCCS4 355 357 Num CCS: procedure 4 NIS 1999 CORE 85 PRCCS5 358 360 Num CCS: procedure 5 NIS 1999 CORE 86 PRCCS6 361 363 Num CCS: procedure 6 NIS 1999 CORE 87 PRCCS7 364 366 Num CCS: procedure 7 NIS 1999 CORE 88 PRCCS8 367 369 Num CCS: procedure 8 NIS 1999 CORE 89 PRCCS9 370 372 Num CCS: procedure 9 NIS 1999 CORE 90 PRCCS10 373 375 Num CCS: procedure 10 NIS 1999 CORE 91 PRCCS11 376 378 Num CCS: procedure 11 NIS 1999 CORE 92 PRCCS12 379 381 Num CCS: procedure 12 NIS 1999 CORE 93 PRCCS13 382 384 Num CCS: procedure 13 NIS 1999 CORE 94 PRCCS14 385 387 Num CCS: procedure 14 NIS 1999 CORE 95 PRCCS15 388 390 Num CCS: procedure 15 NIS 1999 CORE 96 PRDAY1 391 393 Num Number of days from admission to PR1 NIS 1999 CORE 97 PRDAY2 394 396 Num Number of days from admission to PR2 NIS 1999 CORE 98 PRDAY3 397 399 Num Number of days from admission to PR3 NIS 1999 CORE 99 PRDAY4 400 402 Num Number of days from admission to PR4 NIS 1999 CORE 100 PRDAY5 403 405 Num Number of days from admission to PR5 NIS 1999 CORE 101 PRDAY6 406 408 Num Number of days from admission to PR6 NIS 1999 CORE 102 PRDAY7 409 411 Num Number of days from admission to PR7 NIS 1999 CORE 103 PRDAY8 412 414 Num Number of days from admission to PR8 NIS 1999 CORE 104 PRDAY9 415 417 Num Number of days from admission to PR9 NIS 1999 CORE 105 PRDAY10 418 420 Num Number of days from admission to PR10 NIS 1999 CORE 106 PRDAY11 421 423 Num Number of days from admission to PR11 NIS 1999 CORE 107 PRDAY12 424 426 Num Number of days from admission to PR12 NIS 1999 CORE 108 PRDAY13 427 429 Num Number of days from admission to PR13 NIS 1999 CORE 109 PRDAY14 430 432 Num Number of days from admission to PR14 NIS 1999 CORE 110 PRDAY15 433 435 Num Number of days from admission to PR15 NIS 1999 CORE 111 RACE 436 437 Num Race (uniform) NIS 1999 CORE 112 SURGID_S 438 453 Char Primary surgeon number (synthetic) NIS 1999 CORE 113 TOTCHG 454 463 Num Total charges (cleaned) NIS 1999 CORE 114 TOTCHG_X 464 478 2 Num Total charges (as received from source) NIS 1999 CORE 115 YEAR 479 482 Num Calendar year NIS 1999 CORE 116 ZIPINC 483 484 Num Median household income category for patient's zip code