codesystem-alternate.xml 1 <?xml version="1.0" encoding="utf-8"?> 2 <StructureDefinition xmlns="http://hl7.org/fhir"> 3 <id value="codesystem-alternate" /> 4 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"> 5 <valueCode value="vocab" /> 6 </extension> 7 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"> 8 <valueInteger value="1" /> 9 </extension> 10 <url value="http://hl7.org/fhir/StructureDefinition/codesystem-alternate" /> 11 <version value="4.0.1" /> 12 <name value="alternate" /> 13 <status value="draft" /> 14 <date value="2019-10-31T23:29:23.0000000+01:00" /> 15 <publisher value="HL7" /> 16 <description value="An additional code that may be used to represent the concept." /> 17 <fhirVersion value="4.0.1" /> 18 <mapping> 19 <identity value="rim" /> 20 <uri value="http://hl7.org/v3" /> 21 <name value="RIM Mapping" /> 22 </mapping> 23 <kind value="complex-type" /> 24 <abstract value="false" /> 25 <context> 26 <type value="element" /> 27 <expression value="CodeSystem.concept" /> 28 </context> 29 <type value="Extension" /> 30 <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> 31 <derivation value="constraint" /> 32 <snapshot> 33 <element id="Extension"> 34 <path value="Extension" /> 35 <short value="Additional code for the concept" /> 36 <definition value="An additional code that may be used to represent the concept." /> 37 <comment value="Few coding systems define synonyms. A few more define alternate codes for special case use." /> 38 <min value="0" /> 39 <max value="*" /> 40 <base> 41 <path value="Extension" /> 42 <min value="0" /> 43 <max value="*" /> 44 </base> 45 <condition value="ele-1" /> 46 <constraint> 47 <key value="ele-1" /> 48 <severity value="error" /> 49 <human value="All FHIR elements must have a @value or children" /> 50 <expression value="hasValue() or (children().count() > id.count())" /> 51 <xpath value="@value|f:*|h:div" /> 52 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 53 </constraint> 54 <constraint> 55 <key value="ext-1" /> 56 <severity value="error" /> 57 <human value="Must have either extensions or value[x], not both" /> 58 <expression value="extension.exists() != value.exists()" /> 59 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" /> 60 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 61 </constraint> 62 <isModifier value="false" /> 63 </element> 64 <element id="Extension.id"> 65 <path value="Extension.id" /> 66 <representation value="xmlAttr" /> 67 <short value="Unique id for inter-element referencing" /> 68 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." /> 69 <min value="0" /> 70 <max value="1" /> 71 <base> 72 <path value="Element.id" /> 73 <min value="0" /> 74 <max value="1" /> 75 </base> 76 <type> 77 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> 78 <valueUrl value="string" /> 79 </extension> 80 <code value="http://hl7.org/fhirpath/System.String" /> 81 </type> 82 <isModifier value="false" /> 83 <isSummary value="false" /> 84 <mapping> 85 <identity value="rim" /> 86 <map value="n/a" /> 87 </mapping> 88 </element> 89 <element id="Extension.extension"> 90 <path value="Extension.extension" /> 91 <slicing> 92 <discriminator> 93 <type value="value" /> 94 <path value="url" /> 95 </discriminator> 96 <description value="Extensions are always sliced by (at least) url" /> 97 <rules value="open" /> 98 </slicing> 99 <short value="Additional content defined by implementations" /> 100 <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 manageable, 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." /> 101 <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." /> 102 <alias value="extensions" /> 103 <alias value="user content" /> 104 <min value="0" /> 105 <max value="*" /> 106 <base> 107 <path value="Element.extension" /> 108 <min value="0" /> 109 <max value="*" /> 110 </base> 111 <type> 112 <code value="Extension" /> 113 </type> 114 <constraint> 115 <key value="ele-1" /> 116 <severity value="error" /> 117 <human value="All FHIR elements must have a @value or children" /> 118 <expression value="hasValue() or (children().count() > id.count())" /> 119 <xpath value="@value|f:*|h:div" /> 120 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 121 </constraint> 122 <constraint> 123 <key value="ext-1" /> 124 <severity value="error" /> 125 <human value="Must have either extensions or value[x], not both" /> 126 <expression value="extension.exists() != value.exists()" /> 127 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])" /> 128 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 129 </constraint> 130 <isModifier value="false" /> 131 <isSummary value="false" /> 132 <mapping> 133 <identity value="rim" /> 134 <map value="n/a" /> 135 </mapping> 136 </element> 137 <element id="Extension.extension:code"> 138 <path value="Extension.extension" /> 139 <sliceName value="code" /> 140 <short value="Code that represents the concept" /> 141 <definition value="The code that may be used to represent the concept." /> 142 <min value="1" /> 143 <max value="1" /> 144 <base> 145 <path value="Element.extension" /> 146 <min value="0" /> 147 <max value="*" /> 148 </base> 149 <type> 150 <code value="Extension" /> 151 </type> 152 <constraint> 153 <key value="ele-1" /> 154 <severity value="error" /> 155 <human value="All FHIR elements must have a @value or children" /> 156 <expression value="hasValue() or (children().count() > id.count())" /> 157 <xpath value="@value|f:*|h:div" /> 158 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 159 </constraint> 160 <constraint> 161 <key value="ext-1" /> 162 <severity value="error" /> 163 <human value="Must have either extensions or value[x], not both" /> 164 <expression value="extension.exists() != value.exists()" /> 165 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])" /> 166 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 167 </constraint> 168 <isModifier value="false" /> 169 <isSummary value="false" /> 170 </element> 171 <element id="Extension.extension:code.id"> 172 <path value="Extension.extension.id" /> 173 <representation value="xmlAttr" /> 174 <short value="Unique id for inter-element referencing" /> 175 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." /> 176 <min value="0" /> 177 <max value="1" /> 178 <base> 179 <path value="Element.id" /> 180 <min value="0" /> 181 <max value="1" /> 182 </base> 183 <type> 184 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> 185 <valueUrl value="string" /> 186 </extension> 187 <code value="http://hl7.org/fhirpath/System.String" /> 188 </type> 189 <isModifier value="false" /> 190 <isSummary value="false" /> 191 <mapping> 192 <identity value="rim" /> 193 <map value="n/a" /> 194 </mapping> 195 </element> 196 <element id="Extension.extension:code.extension"> 197 <path value="Extension.extension.extension" /> 198 <slicing> 199 <discriminator> 200 <type value="value" /> 201 <path value="url" /> 202 </discriminator> 203 <description value="Extensions are always sliced by (at least) url" /> 204 <rules value="open" /> 205 </slicing> 206 <short value="Extension" /> 207 <definition value="An Extension" /> 208 <min value="0" /> 209 <max value="0" /> 210 <base> 211 <path value="Element.extension" /> 212 <min value="0" /> 213 <max value="*" /> 214 </base> 215 <type> 216 <code value="Extension" /> 217 </type> 218 <constraint> 219 <key value="ele-1" /> 220 <severity value="error" /> 221 <human value="All FHIR elements must have a @value or children" /> 222 <expression value="hasValue() or (children().count() > id.count())" /> 223 <xpath value="@value|f:*|h:div" /> 224 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 225 </constraint> 226 <constraint> 227 <key value="ext-1" /> 228 <severity value="error" /> 229 <human value="Must have either extensions or value[x], not both" /> 230 <expression value="extension.exists() != value.exists()" /> 231 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])" /> 232 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 233 </constraint> 234 <isModifier value="false" /> 235 <isSummary value="false" /> 236 </element> 237 <element id="Extension.extension:code.url"> 238 <path value="Extension.extension.url" /> 239 <representation value="xmlAttr" /> 240 <short value="identifies the meaning of the extension" /> 241 <definition value="Source of the definition for the extension code - a logical name or a URL." /> 242 <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." /> 243 <min value="1" /> 244 <max value="1" /> 245 <base> 246 <path value="Extension.url" /> 247 <min value="1" /> 248 <max value="1" /> 249 </base> 250 <type> 251 <code value="uri" /> 252 </type> 253 <fixedUri value="code" /> 254 <isModifier value="false" /> 255 <isSummary value="false" /> 256 <mapping> 257 <identity value="rim" /> 258 <map value="N/A" /> 259 </mapping> 260 </element> 261 <element id="Extension.extension:code.value[x]"> 262 <path value="Extension.extension.value[x]" /> 263 <short value="Value of extension" /> 264 <definition value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/extensibility.html) for a list)." /> 265 <min value="1" /> 266 <max value="1" /> 267 <base> 268 <path value="Extension.value[x]" /> 269 <min value="0" /> 270 <max value="1" /> 271 </base> 272 <type> 273 <code value="code" /> 274 </type> 275 <constraint> 276 <key value="ele-1" /> 277 <severity value="error" /> 278 <human value="All FHIR elements must have a @value or children" /> 279 <expression value="hasValue() or (children().count() > id.count())" /> 280 <xpath value="@value|f:*|h:div" /> 281 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 282 </constraint> 283 <isModifier value="false" /> 284 <isSummary value="false" /> 285 <mapping> 286 <identity value="rim" /> 287 <map value="N/A" /> 288 </mapping> 289 </element> 290 <element id="Extension.extension:use"> 291 <path value="Extension.extension" /> 292 <sliceName value="use" /> 293 <short value="Expected use of the code" /> 294 <definition value="Defines why this additional code is defined." /> 295 <comment value="Further work is needed on the value set." /> 296 <min value="1" /> 297 <max value="1" /> 298 <base> 299 <path value="Element.extension" /> 300 <min value="0" /> 301 <max value="*" /> 302 </base> 303 <type> 304 <code value="Extension" /> 305 </type> 306 <constraint> 307 <key value="ele-1" /> 308 <severity value="error" /> 309 <human value="All FHIR elements must have a @value or children" /> 310 <expression value="hasValue() or (children().count() > id.count())" /> 311 <xpath value="@value|f:*|h:div" /> 312 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 313 </constraint> 314 <constraint> 315 <key value="ext-1" /> 316 <severity value="error" /> 317 <human value="Must have either extensions or value[x], not both" /> 318 <expression value="extension.exists() != value.exists()" /> 319 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])" /> 320 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 321 </constraint> 322 <isModifier value="false" /> 323 <isSummary value="false" /> 324 </element> 325 <element id="Extension.extension:use.id"> 326 <path value="Extension.extension.id" /> 327 <representation value="xmlAttr" /> 328 <short value="Unique id for inter-element referencing" /> 329 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." /> 330 <min value="0" /> 331 <max value="1" /> 332 <base> 333 <path value="Element.id" /> 334 <min value="0" /> 335 <max value="1" /> 336 </base> 337 <type> 338 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> 339 <valueUrl value="string" /> 340 </extension> 341 <code value="http://hl7.org/fhirpath/System.String" /> 342 </type> 343 <isModifier value="false" /> 344 <isSummary value="false" /> 345 <mapping> 346 <identity value="rim" /> 347 <map value="n/a" /> 348 </mapping> 349 </element> 350 <element id="Extension.extension:use.extension"> 351 <path value="Extension.extension.extension" /> 352 <slicing> 353 <discriminator> 354 <type value="value" /> 355 <path value="url" /> 356 </discriminator> 357 <description value="Extensions are always sliced by (at least) url" /> 358 <rules value="open" /> 359 </slicing> 360 <short value="Extension" /> 361 <definition value="An Extension" /> 362 <min value="0" /> 363 <max value="0" /> 364 <base> 365 <path value="Element.extension" /> 366 <min value="0" /> 367 <max value="*" /> 368 </base> 369 <type> 370 <code value="Extension" /> 371 </type> 372 <constraint> 373 <key value="ele-1" /> 374 <severity value="error" /> 375 <human value="All FHIR elements must have a @value or children" /> 376 <expression value="hasValue() or (children().count() > id.count())" /> 377 <xpath value="@value|f:*|h:div" /> 378 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 379 </constraint> 380 <constraint> 381 <key value="ext-1" /> 382 <severity value="error" /> 383 <human value="Must have either extensions or value[x], not both" /> 384 <expression value="extension.exists() != value.exists()" /> 385 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])" /> 386 <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> 387 </constraint> 388 <isModifier value="false" /> 389 <isSummary value="false" /> 390 </element> 391 <element id="Extension.extension:use.url"> 392 <path value="Extension.extension.url" /> 393 <representation value="xmlAttr" /> 394 <short value="identifies the meaning of the extension" /> 395 <definition value="Source of the definition for the extension code - a logical name or a URL." /> 396 <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." /> 397 <min value="1" /> 398 <max value="1" /> 399 <base> 400 <path value="Extension.url" /> 401 <min value="1" /> 402 <max value="1" /> 403 </base> 404 <type> 405 <code value="uri" /> 406 </type> 407 <fixedUri value="use" /> 408 <isModifier value="false" /> 409 <isSummary value="false" /> 410 <mapping> 411 <identity value="rim" /> 412 <map value="N/A" /> 413 </mapping> 414 </element> 415 <element id="Extension.extension:use.value[x]"> 416 <path value="Extension.extension.value[x]" /> 417 <short value="Value of extension" /> 418 <definition value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/extensibility.html) for a list)." /> 419 <min value="1" /> 420 <max value="1" /> 421 <base> 422 <path value="Extension.value[x]" /> 423 <min value="0" /> 424 <max value="1" /> 425 </base> 426 <type> 427 <code value="Coding" /> 428 </type> 429 <constraint> 430 <key value="ele-1" /> 431 <severity value="error" /> 432 <human value="All FHIR elements must have a @value or children" /> 433 <expression value="hasValue() or (children().count() > id.count())" /> 434 <xpath value="@value|f:*|h:div" /> 435 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 436 </constraint> 437 <isModifier value="false" /> 438 <isSummary value="false" /> 439 <binding> 440 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> 441 <valueString value="AlternativeCodeKind" /> 442 </extension> 443 <strength value="extensible" /> 444 <description value="Indicates the type of use for which the code is defined." /> 445 <valueSet value="http://hl7.org/fhir/ValueSet/codesystem-altcode-kind" /> 446 </binding> 447 <mapping> 448 <identity value="rim" /> 449 <map value="N/A" /> 450 </mapping> 451 </element> 452 <element id="Extension.url"> 453 <path value="Extension.url" /> 454 <representation value="xmlAttr" /> 455 <short value="identifies the meaning of the extension" /> 456 <definition value="Source of the definition for the extension code - a logical name or a URL." /> 457 <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." /> 458 <min value="1" /> 459 <max value="1" /> 460 <base> 461 <path value="Extension.url" /> 462 <min value="1" /> 463 <max value="1" /> 464 </base> 465 <type> 466 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> 467 <valueUrl value="uri" /> 468 </extension> 469 <code value="http://hl7.org/fhirpath/System.String" /> 470 </type> 471 <fixedUri value="http://hl7.org/fhir/StructureDefinition/codesystem-alternate" /> 472 <isModifier value="false" /> 473 <isSummary value="false" /> 474 <mapping> 475 <identity value="rim" /> 476 <map value="N/A" /> 477 </mapping> 478 </element> 479 <element id="Extension.value[x]"> 480 <path value="Extension.value[x]" /> 481 <short value="Value of extension" /> 482 <definition value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/extensibility.html) for a list)." /> 483 <min value="0" /> 484 <max value="0" /> 485 <base> 486 <path value="Extension.value[x]" /> 487 <min value="0" /> 488 <max value="1" /> 489 </base> 490 <type> 491 <code value="base64Binary" /> 492 </type> 493 <type> 494 <code value="boolean" /> 495 </type> 496 <type> 497 <code value="canonical" /> 498 </type> 499 <type> 500 <code value="code" /> 501 </type> 502 <type> 503 <code value="date" /> 504 </type> 505 <type> 506 <code value="dateTime" /> 507 </type> 508 <type> 509 <code value="decimal" /> 510 </type> 511 <type> 512 <code value="id" /> 513 </type> 514 <type> 515 <code value="instant" /> 516 </type> 517 <type> 518 <code value="integer" /> 519 </type> 520 <type> 521 <code value="markdown" /> 522 </type> 523 <type> 524 <code value="oid" /> 525 </type> 526 <type> 527 <code value="positiveInt" /> 528 </type> 529 <type> 530 <code value="string" /> 531 </type> 532 <type> 533 <code value="time" /> 534 </type> 535 <type> 536 <code value="unsignedInt" /> 537 </type> 538 <type> 539 <code value="uri" /> 540 </type> 541 <type> 542 <code value="url" /> 543 </type> 544 <type> 545 <code value="uuid" /> 546 </type> 547 <type> 548 <code value="Address" /> 549 </type> 550 <type> 551 <code value="Age" /> 552 </type> 553 <type> 554 <code value="Annotation" /> 555 </type> 556 <type> 557 <code value="Attachment" /> 558 </type> 559 <type> 560 <code value="CodeableConcept" /> 561 </type> 562 <type> 563 <code value="Coding" /> 564 </type> 565 <type> 566 <code value="ContactPoint" /> 567 </type> 568 <type> 569 <code value="Count" /> 570 </type> 571 <type> 572 <code value="Distance" /> 573 </type> 574 <type> 575 <code value="Duration" /> 576 </type> 577 <type> 578 <code value="HumanName" /> 579 </type> 580 <type> 581 <code value="Identifier" /> 582 </type> 583 <type> 584 <code value="Money" /> 585 </type> 586 <type> 587 <code value="Period" /> 588 </type> 589 <type> 590 <code value="Quantity" /> 591 </type> 592 <type> 593 <code value="Range" /> 594 </type> 595 <type> 596 <code value="Ratio" /> 597 </type> 598 <type> 599 <code value="Reference" /> 600 </type> 601 <type> 602 <code value="SampledData" /> 603 </type> 604 <type> 605 <code value="Signature" /> 606 </type> 607 <type> 608 <code value="Timing" /> 609 </type> 610 <type> 611 <code value="ContactDetail" /> 612 </type> 613 <type> 614 <code value="Contributor" /> 615 </type> 616 <type> 617 <code value="DataRequirement" /> 618 </type> 619 <type> 620 <code value="Expression" /> 621 </type> 622 <type> 623 <code value="ParameterDefinition" /> 624 </type> 625 <type> 626 <code value="RelatedArtifact" /> 627 </type> 628 <type> 629 <code value="TriggerDefinition" /> 630 </type> 631 <type> 632 <code value="UsageContext" /> 633 </type> 634 <type> 635 <code value="Dosage" /> 636 </type> 637 <type> 638 <code value="Meta" /> 639 </type> 640 <constraint> 641 <key value="ele-1" /> 642 <severity value="error" /> 643 <human value="All FHIR elements must have a @value or children" /> 644 <expression value="hasValue() or (children().count() > id.count())" /> 645 <xpath value="@value|f:*|h:div" /> 646 <source value="http://hl7.org/fhir/StructureDefinition/Element" /> 647 </constraint> 648 <isModifier value="false" /> 649 <isSummary value="false" /> 650 <mapping> 651 <identity value="rim" /> 652 <map value="N/A" /> 653 </mapping> 654 </element> 655 </snapshot> 656 <differential> 657 <element id="Extension"> 658 <path value="Extension" /> 659 <short value="Additional code for the concept" /> 660 <definition value="An additional code that may be used to represent the concept." /> 661 <comment value="Few coding systems define synonyms. A few more define alternate codes for special case use." /> 662 <min value="0" /> 663 <max value="*" /> 664 <isModifier value="false" /> 665 </element> 666 <element id="Extension.extension:code"> 667 <path value="Extension.extension" /> 668 <sliceName value="code" /> 669 <short value="Code that represents the concept" /> 670 <definition value="The code that may be used to represent the concept." /> 671 <min value="1" /> 672 <max value="1" /> 673 <type> 674 <code value="Extension" /> 675 </type> 676 </element> 677 <element id="Extension.extension:code.extension"> 678 <path value="Extension.extension.extension" /> 679 <max value="0" /> 680 </element> 681 <element id="Extension.extension:code.url"> 682 <path value="Extension.extension.url" /> 683 <type> 684 <code value="uri" /> 685 </type> 686 <fixedUri value="code" /> 687 </element> 688 <element id="Extension.extension:code.value[x]"> 689 <path value="Extension.extension.value[x]" /> 690 <min value="1" /> 691 <type> 692 <code value="code" /> 693 </type> 694 </element> 695 <element id="Extension.extension:use"> 696 <path value="Extension.extension" /> 697 <sliceName value="use" /> 698 <short value="Expected use of the code" /> 699 <definition value="Defines why this additional code is defined." /> 700 <comment value="Further work is needed on the value set." /> 701 <min value="1" /> 702 <max value="1" /> 703 <type> 704 <code value="Extension" /> 705 </type> 706 </element> 707 <element id="Extension.extension:use.extension"> 708 <path value="Extension.extension.extension" /> 709 <max value="0" /> 710 </element> 711 <element id="Extension.extension:use.url"> 712 <path value="Extension.extension.url" /> 713 <type> 714 <code value="uri" /> 715 </type> 716 <fixedUri value="use" /> 717 </element> 718 <element id="Extension.extension:use.value[x]"> 719 <path value="Extension.extension.value[x]" /> 720 <min value="1" /> 721 <type> 722 <code value="Coding" /> 723 </type> 724 <binding> 725 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> 726 <valueString value="AlternativeCodeKind" /> 727 </extension> 728 <strength value="extensible" /> 729 <description value="Indicates the type of use for which the code is defined." /> 730 <valueSet value="http://hl7.org/fhir/ValueSet/codesystem-altcode-kind" /> 731 </binding> 732 </element> 733 <element id="Extension.url"> 734 <path value="Extension.url" /> 735 <fixedUri value="http://hl7.org/fhir/StructureDefinition/codesystem-alternate" /> 736 </element> 737 <element id="Extension.value[x]"> 738 <path value="Extension.value[x]" /> 739 <min value="0" /> 740 <max value="0" /> 741 </element> 742 </differential> 743 </StructureDefinition>