Extension.xml 1 <?xml version="1.0" encoding="utf-8"?> 2 <StructureDefinition xmlns="http://hl7.org/fhir"> 3 <id value="Extension" /> 4 <meta> 5 <lastUpdated value="2023-03-26T06:21:02.749+02:00" /> 6 </meta> 7 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> 8 <valueCode value="normative" /> 9 </extension> 10 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version"> 11 <valueCode value="4.0.0" /> 12 </extension> 13 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics"> 14 <valueCode value="can-bind" /> 15 </extension> 16 <url value="http://hl7.org/fhir/StructureDefinition/Extension" /> 17 <version value="5.0.0" /> 18 <name value="Extension" /> 19 <status value="active" /> 20 <experimental value="false" /> 21 <date value="2023-03-26T06:21:02.0000000+02:00" /> 22 <publisher value="HL7 FHIR Standard" /> 23 <contact> 24 <telecom> 25 <system value="url" /> 26 <value value="http://hl7.org/fhir" /> 27 </telecom> 28 </contact> 29 <description value="Extension Type: Optional Extension Element - found in all resources." /> 30 <jurisdiction> 31 <coding> 32 <system value="http://unstats.un.org/unsd/methods/m49/m49.htm" /> 33 <code value="001" /> 34 <display value="World" /> 35 </coding> 36 </jurisdiction> 37 <purpose value="The ability to add extensions in a structured way is what keeps FHIR resources simple." /> 38 <fhirVersion value="5.0.0" /> 39 <mapping> 40 <identity value="rim" /> 41 <uri value="http://hl7.org/v3" /> 42 <name value="RIM Mapping" /> 43 </mapping> 44 <kind value="complex-type" /> 45 <abstract value="false" /> 46 <type value="Extension" /> 47 <baseDefinition value="http://hl7.org/fhir/StructureDefinition/DataType" /> 48 <derivation value="specialization" /> 49 <snapshot> 50 <element id="Extension"> 51 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> 52 <valueCode value="normative" /> 53 </extension> 54 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version"> 55 <valueCode value="4.0.0" /> 56 </extension> 57 <path value="Extension" /> 58 <short value="Optional Extensions Element" /> 59 <definition value="Optional Extension Element - found in all resources." /> 60 <min value="0" /> 61 <max value="*" /> 62 <base> 63 <path value="Extension" /> 64 <min value="0" /> 65 <max value="*" /> 66 </base> 67 <constraint> 68 <key value="ele-1" /> 69 <severity value="error" /> 70 <human value="All FHIR elements must have a @value or children" /> 71 <expression value="hasValue() or (children().count() > id.count())" /> 72 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 73 </constraint> 74 <constraint> 75 <key value="ext-1" /> 76 <severity value="error" /> 77 <human value="Must have either extensions or value[x], not both" /> 78 <expression value="extension.exists() != value.exists()" /> 79 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 80 </constraint> 81 <isModifier value="false" /> 82 <mapping> 83 <identity value="rim" /> 84 <map value="n/a,N/A" /> 85 </mapping> 86 </element> 87 <element id="Extension.id"> 88 <path value="Extension.id" /> 89 <representation value="xmlAttr" /> 90 <short value="Unique id for inter-element referencing" /> 91 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." /> 92 <min value="0" /> 93 <max value="1" /> 94 <base> 95 <path value="Element.id" /> 96 <min value="0" /> 97 <max value="1" /> 98 </base> 99 <type> 100 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> 101 <valueUrl value="id" /> 102 </extension> 103 <code value="http://hl7.org/fhirpath/System.String" /> 104 </type> 105 <condition value="ele-1" /> 106 <isModifier value="false" /> 107 <isSummary value="false" /> 108 <mapping> 109 <identity value="rim" /> 110 <map value="n/a" /> 111 </mapping> 112 </element> 113 <element id="Extension.extension"> 114 <path value="Extension.extension" /> 115 <slicing> 116 <discriminator> 117 <type value="value" /> 118 <path value="url" /> 119 </discriminator> 120 <description value="Extensions are always sliced by (at least) url" /> 121 <rules value="open" /> 122 </slicing> 123 <short value="Additional content defined by implementations" /> 124 <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." /> 125 <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." /> 126 <alias value="extensions" /> 127 <alias value="user content" /> 128 <min value="0" /> 129 <max value="*" /> 130 <base> 131 <path value="Element.extension" /> 132 <min value="0" /> 133 <max value="*" /> 134 </base> 135 <type> 136 <code value="Extension" /> 137 </type> 138 <constraint> 139 <key value="ele-1" /> 140 <severity value="error" /> 141 <human value="All FHIR elements must have a @value or children" /> 142 <expression value="hasValue() or (children().count() > id.count())" /> 143 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 144 </constraint> 145 <constraint> 146 <key value="ext-1" /> 147 <severity value="error" /> 148 <human value="Must have either extensions or value[x], not both" /> 149 <expression value="extension.exists() != value.exists()" /> 150 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 151 </constraint> 152 <isModifier value="false" /> 153 <isSummary value="false" /> 154 <mapping> 155 <identity value="rim" /> 156 <map value="n/a" /> 157 </mapping> 158 </element> 159 <element id="Extension.url"> 160 <path value="Extension.url" /> 161 <representation value="xmlAttr" /> 162 <short value="identifies the meaning of the extension" /> 163 <definition value="Source of the definition for the extension code - a logical name or a URL." /> 164 <comment value="The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension." /> 165 <min value="1" /> 166 <max value="1" /> 167 <base> 168 <path value="Extension.url" /> 169 <min value="1" /> 170 <max value="1" /> 171 </base> 172 <type> 173 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> 174 <valueUrl value="uri" /> 175 </extension> 176 <code value="http://hl7.org/fhirpath/System.String" /> 177 </type> 178 <isModifier value="false" /> 179 <isSummary value="false" /> 180 <mapping> 181 <identity value="rim" /> 182 <map value="N/A" /> 183 </mapping> 184 </element> 185 <element id="Extension.value[x]"> 186 <path value="Extension.value[x]" /> 187 <short value="Value of extension" /> 188 <definition value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](extensibility.html) for a list)." /> 189 <min value="0" /> 190 <max value="1" /> 191 <base> 192 <path value="Extension.value[x]" /> 193 <min value="0" /> 194 <max value="1" /> 195 </base> 196 <type> 197 <code value="base64Binary" /> 198 </type> 199 <type> 200 <code value="boolean" /> 201 </type> 202 <type> 203 <code value="canonical" /> 204 </type> 205 <type> 206 <code value="code" /> 207 </type> 208 <type> 209 <code value="date" /> 210 </type> 211 <type> 212 <code value="dateTime" /> 213 </type> 214 <type> 215 <code value="decimal" /> 216 </type> 217 <type> 218 <code value="id" /> 219 </type> 220 <type> 221 <code value="instant" /> 222 </type> 223 <type> 224 <code value="integer" /> 225 </type> 226 <type> 227 <code value="integer64" /> 228 </type> 229 <type> 230 <code value="markdown" /> 231 </type> 232 <type> 233 <code value="oid" /> 234 </type> 235 <type> 236 <code value="positiveInt" /> 237 </type> 238 <type> 239 <code value="string" /> 240 </type> 241 <type> 242 <code value="time" /> 243 </type> 244 <type> 245 <code value="unsignedInt" /> 246 </type> 247 <type> 248 <code value="uri" /> 249 </type> 250 <type> 251 <code value="url" /> 252 </type> 253 <type> 254 <code value="uuid" /> 255 </type> 256 <type> 257 <code value="Address" /> 258 </type> 259 <type> 260 <code value="Age" /> 261 </type> 262 <type> 263 <code value="Annotation" /> 264 </type> 265 <type> 266 <code value="Attachment" /> 267 </type> 268 <type> 269 <code value="CodeableConcept" /> 270 </type> 271 <type> 272 <code value="CodeableReference" /> 273 </type> 274 <type> 275 <code value="Coding" /> 276 </type> 277 <type> 278 <code value="ContactPoint" /> 279 </type> 280 <type> 281 <code value="Count" /> 282 </type> 283 <type> 284 <code value="Distance" /> 285 </type> 286 <type> 287 <code value="Duration" /> 288 </type> 289 <type> 290 <code value="HumanName" /> 291 </type> 292 <type> 293 <code value="Identifier" /> 294 </type> 295 <type> 296 <code value="Money" /> 297 </type> 298 <type> 299 <code value="Period" /> 300 </type> 301 <type> 302 <code value="Quantity" /> 303 </type> 304 <type> 305 <code value="Range" /> 306 </type> 307 <type> 308 <code value="Ratio" /> 309 </type> 310 <type> 311 <code value="RatioRange" /> 312 </type> 313 <type> 314 <code value="Reference" /> 315 </type> 316 <type> 317 <code value="SampledData" /> 318 </type> 319 <type> 320 <code value="Signature" /> 321 </type> 322 <type> 323 <code value="Timing" /> 324 </type> 325 <type> 326 <code value="ContactDetail" /> 327 </type> 328 <type> 329 <code value="DataRequirement" /> 330 </type> 331 <type> 332 <code value="Expression" /> 333 </type> 334 <type> 335 <code value="ParameterDefinition" /> 336 </type> 337 <type> 338 <code value="RelatedArtifact" /> 339 </type> 340 <type> 341 <code value="TriggerDefinition" /> 342 </type> 343 <type> 344 <code value="UsageContext" /> 345 </type> 346 <type> 347 <code value="Availability" /> 348 </type> 349 <type> 350 <code value="ExtendedContactDetail" /> 351 </type> 352 <type> 353 <code value="Dosage" /> 354 </type> 355 <type> 356 <code value="Meta" /> 357 </type> 358 <condition value="ext-1" /> 359 <constraint> 360 <key value="ele-1" /> 361 <severity value="error" /> 362 <human value="All FHIR elements must have a @value or children" /> 363 <expression value="hasValue() or (children().count() > id.count())" /> 364 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 365 </constraint> 366 <isModifier value="false" /> 367 <isSummary value="false" /> 368 <mapping> 369 <identity value="rim" /> 370 <map value="N/A" /> 371 </mapping> 372 </element> 373 </snapshot> 374 <differential> 375 <element id="Extension"> 376 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> 377 <valueCode value="normative" /> 378 </extension> 379 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version"> 380 <valueCode value="4.0.0" /> 381 </extension> 382 <path value="Extension" /> 383 <short value="Optional Extensions Element" /> 384 <definition value="Optional Extension Element - found in all resources." /> 385 <min value="0" /> 386 <max value="*" /> 387 <constraint> 388 <key value="ext-1" /> 389 <severity value="error" /> 390 <human value="Must have either extensions or value[x], not both" /> 391 <expression value="extension.exists() != value.exists()" /> 392 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 393 </constraint> 394 <mapping> 395 <identity value="rim" /> 396 <map value="N/A" /> 397 </mapping> 398 </element> 399 <element id="Extension.url"> 400 <path value="Extension.url" /> 401 <representation value="xmlAttr" /> 402 <short value="identifies the meaning of the extension" /> 403 <definition value="Source of the definition for the extension code - a logical name or a URL." /> 404 <comment value="The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension." /> 405 <min value="1" /> 406 <max value="1" /> 407 <type> 408 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> 409 <valueUrl value="uri" /> 410 </extension> 411 <code value="http://hl7.org/fhirpath/System.String" /> 412 </type> 413 <mapping> 414 <identity value="rim" /> 415 <map value="N/A" /> 416 </mapping> 417 </element> 418 <element id="Extension.value[x]"> 419 <path value="Extension.value[x]" /> 420 <short value="Value of extension" /> 421 <definition value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](extensibility.html) for a list)." /> 422 <min value="0" /> 423 <max value="1" /> 424 <type> 425 <code value="base64Binary" /> 426 </type> 427 <type> 428 <code value="boolean" /> 429 </type> 430 <type> 431 <code value="canonical" /> 432 </type> 433 <type> 434 <code value="code" /> 435 </type> 436 <type> 437 <code value="date" /> 438 </type> 439 <type> 440 <code value="dateTime" /> 441 </type> 442 <type> 443 <code value="decimal" /> 444 </type> 445 <type> 446 <code value="id" /> 447 </type> 448 <type> 449 <code value="instant" /> 450 </type> 451 <type> 452 <code value="integer" /> 453 </type> 454 <type> 455 <code value="integer64" /> 456 </type> 457 <type> 458 <code value="markdown" /> 459 </type> 460 <type> 461 <code value="oid" /> 462 </type> 463 <type> 464 <code value="positiveInt" /> 465 </type> 466 <type> 467 <code value="string" /> 468 </type> 469 <type> 470 <code value="time" /> 471 </type> 472 <type> 473 <code value="unsignedInt" /> 474 </type> 475 <type> 476 <code value="uri" /> 477 </type> 478 <type> 479 <code value="url" /> 480 </type> 481 <type> 482 <code value="uuid" /> 483 </type> 484 <type> 485 <code value="Address" /> 486 </type> 487 <type> 488 <code value="Age" /> 489 </type> 490 <type> 491 <code value="Annotation" /> 492 </type> 493 <type> 494 <code value="Attachment" /> 495 </type> 496 <type> 497 <code value="CodeableConcept" /> 498 </type> 499 <type> 500 <code value="CodeableReference" /> 501 </type> 502 <type> 503 <code value="Coding" /> 504 </type> 505 <type> 506 <code value="ContactPoint" /> 507 </type> 508 <type> 509 <code value="Count" /> 510 </type> 511 <type> 512 <code value="Distance" /> 513 </type> 514 <type> 515 <code value="Duration" /> 516 </type> 517 <type> 518 <code value="HumanName" /> 519 </type> 520 <type> 521 <code value="Identifier" /> 522 </type> 523 <type> 524 <code value="Money" /> 525 </type> 526 <type> 527 <code value="Period" /> 528 </type> 529 <type> 530 <code value="Quantity" /> 531 </type> 532 <type> 533 <code value="Range" /> 534 </type> 535 <type> 536 <code value="Ratio" /> 537 </type> 538 <type> 539 <code value="RatioRange" /> 540 </type> 541 <type> 542 <code value="Reference" /> 543 </type> 544 <type> 545 <code value="SampledData" /> 546 </type> 547 <type> 548 <code value="Signature" /> 549 </type> 550 <type> 551 <code value="Timing" /> 552 </type> 553 <type> 554 <code value="ContactDetail" /> 555 </type> 556 <type> 557 <code value="DataRequirement" /> 558 </type> 559 <type> 560 <code value="Expression" /> 561 </type> 562 <type> 563 <code value="ParameterDefinition" /> 564 </type> 565 <type> 566 <code value="RelatedArtifact" /> 567 </type> 568 <type> 569 <code value="TriggerDefinition" /> 570 </type> 571 <type> 572 <code value="UsageContext" /> 573 </type> 574 <type> 575 <code value="Availability" /> 576 </type> 577 <type> 578 <code value="ExtendedContactDetail" /> 579 </type> 580 <type> 581 <code value="Dosage" /> 582 </type> 583 <type> 584 <code value="Meta" /> 585 </type> 586 <condition value="ext-1" /> 587 <mapping> 588 <identity value="rim" /> 589 <map value="N/A" /> 590 </mapping> 591 </element> 592 </differential> 593 </StructureDefinition>