Reference record for OID 2.16.840.1.113883.18.55

Parent

2.16.840.1.113883.18 (18, v2CodeSystemsRoot)

Node code

Node names

AllergySeverity
v2-0128
allergySeverity

Numeric OID

2.16.840.1.113883.18.55

URN notation

urn:oid:2.16.840.1.113883.18.55

ASN.1 notation

{2 16 840 1 113883 18 55}

{joint-iso-itu-t(2) country(16) us(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) v2-0128(55)}
{joint-iso-itu-t(2) country(16) us(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) allergySeverity(55)}
{joint-iso-itu-t(2) country(16) us-joint(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) v2-0128(55)}
{joint-iso-itu-t(2) country(16) us-joint(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) allergySeverity(55)}
{joint-iso-ccitt(2) country(16) us(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) v2-0128(55)}
{joint-iso-ccitt(2) country(16) us(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) allergySeverity(55)}
{joint-iso-ccitt(2) country(16) us-joint(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) v2-0128(55)}
{joint-iso-ccitt(2) country(16) us-joint(840) organization(1) hl7(113883) v2CodeSystemsRoot(18) allergySeverity(55)}

OID-IRI notation

/2/16/840/1/113883/18/55
/Country/840/1/113883/18/55
/Joint-ISO-ITU-T/16/840/1/113883/18/55

Named path variants

/joint-iso-itu-t/country/us/organization/hl7/18/AllergySeverity
/joint-iso-itu-t/country/us/organization/hl7/18/v2-0128
/joint-iso-itu-t/country/us/organization/hl7/18/allergySeverity
/joint-iso-itu-t/country/us/organization/hl7/v2CodeSystemsRoot/AllergySeverity
/joint-iso-itu-t/country/us/organization/hl7/v2CodeSystemsRoot/v2-0128
/joint-iso-itu-t/country/us/organization/hl7/v2CodeSystemsRoot/allergySeverity
/joint-iso-itu-t/country/us/organization/HL7/18/AllergySeverity
/joint-iso-itu-t/country/us/organization/HL7/18/v2-0128
/joint-iso-itu-t/country/us/organization/HL7/18/allergySeverity
/joint-iso-itu-t/country/us/organization/HL7/v2CodeSystemsRoot/AllergySeverity
/joint-iso-itu-t/country/us/organization/HL7/v2CodeSystemsRoot/v2-0128
/joint-iso-itu-t/country/us/organization/HL7/v2CodeSystemsRoot/allergySeverity
/joint-iso-itu-t/country/us-joint/organization/hl7/18/AllergySeverity
/joint-iso-itu-t/country/us-joint/organization/hl7/18/v2-0128
/joint-iso-itu-t/country/us-joint/organization/hl7/18/allergySeverity
/joint-iso-itu-t/country/us-joint/organization/hl7/v2CodeSystemsRoot/AllergySeverity
Additional combinations skipped.

Descriptions

allergySeverity — HL7 International OID Registry

Code system of concepts which specify the general severity of an allergy. Used in HL7 Version 2.x messaging in the AL1 segment.

Source records

allergySeverity

Status in source: complete.

Names: allergySeverity

Technical details

{
  "organization": "HL7 International",
  "coding_system_name": "Allergy Severity",
  "published_oid_type": "18"
}

HL7 International OID Registry · Publisher's source file: HL7 International OID Registry — all types, statuses and fields
HL7 report status: OID review is complete.
· Download HL7 International OID Registry — all types, statuses and fields
Source location: OID_Report.xml / OID_root[16623] / Comp_OID 2.16.840.1.113883.18.55.
Source version and references

Downloaded: 2026-10-25T23:05:32.096080+00:00.

AllergySeverity, v2-0128

Status in source: active.

Names: AllergySeverity, v2-0128

Technical details

{
  "url": "http://terminology.hl7.org/CodeSystem/v2-0128",
  "date": "2019-12-01",
  "title": "allergySeverity",
  "status": "active",
  "contact": [
    {
      "telecom": [
        {
          "value": "http://hl7.org",
          "system": "url"
        },
        {
          "value": "hq@HL7.org",
          "system": "email"
        }
      ]
    }
  ],
  "purpose": "Underlying Master Code System for V2 table 0128 (Allergy Severity)",
  "version": "3.0.0",
  "copyright": "This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html",
  "publisher": "Health Level Seven International",
  "experimental": false,
  "caseSensitive": true,
  "compositional": false,
  "resource_type": "CodeSystem",
  "versionNeeded": false,
  "oid_identifier": {
    "value": "urn:oid:2.16.840.1.113883.18.55",
    "system": "urn:ietf:rfc:3986"
  },
  "hierarchyMeaning": "is-a"
}

HL7 Terminology · Publisher's source file: Source package: package.tgz · Download HL7 Terminology — complete terminology package (TGZ)
Source location: package/CodeSystem-v2-0128.json#/identifier/0.
Source version and references

Downloaded: 2026-10-19T20:26:54.046133+00:00.

First Registration Authority (inferred from ancestor 2.16.840.1.113883)

W. Ted Klein

Current Registration Authority (inferred from ancestor 2.16.840.1.113883.18)

HL7 International

Siblings (445)

OID	Name	Description
2.16.840.1.113883.18.1	sex	Sex
2.16.840.1.113883.18.2	administrativeSex, AdministrativeSex, v2-0001	Administrative sex
2.16.840.1.113883.18.3	problemGoalActionCode, ProblemGoalAction, v2-0287, problem-goalAction	Health Level 7 (HL7) Table 0287 – Problem/goal action code
2.16.840.1.113883.18.4	Event, v2-0003, eventType
2.16.840.1.113883.18.5	PatientClass, v2-0004, patientClass
2.16.840.1.113883.18.6	ethnicGroup
2.16.840.1.113883.18.7	religion
2.16.840.1.113883.18.8	Religion2, v2-0006, religion2
2.16.840.1.113883.18.9	AdmissionType, v2-0007, admissionType
2.16.840.1.113883.18.10	AcknowledgmentCodes, v2-0008, acknowledgmentCodes
2.16.840.1.113883.18.11	AmbulatoryStatus, v2-0009, ambulatoryStatus
2.16.840.1.113883.18.12	StockLocation, v2-0012, stockLocation
2.16.840.1.113883.18.13	TransactionType, v2-0017, transactionType
2.16.840.1.113883.18.14	admitSource
2.16.840.1.113883.18.15	Priority, v2-0027, priority
2.16.840.1.113883.18.16	Route, v2-0033, route
2.16.840.1.113883.18.17	SiteAdministered, v2-0034, siteAdministered
2.16.840.1.113883.18.18	OrderStatus, v2-0038, orderStatus
2.16.840.1.113883.18.19	conditionCodes
2.16.840.1.113883.18.20	WhatSubjectFilter, v2-0048, whatSubjectFilter
2.16.840.1.113883.18.21	DiagnosisType, v2-0052, diagnosisType
2.16.840.1.113883.18.22	CheckDigitScheme, v2-0061, checkDigitScheme
2.16.840.1.113883.18.23	EventReason, v2-0062, eventReason
2.16.840.1.113883.18.24	Relationship, v2-0063, relationship
2.16.840.1.113883.18.25	SpecimenAction, v2-0065, specimenAction
2.16.840.1.113883.18.26	EmploymentStatus, v2-0066, employmentStatus
2.16.840.1.113883.18.27	HospitalService, v2-0069, hospitalService
2.16.840.1.113883.18.28	SpecimenSourceCodes, v2-0070, specimenSourceCodes
2.16.840.1.113883.18.29	DiagnosticServiceSectionId, v2-0074, diagnosticServiceSectionId
2.16.840.1.113883.18.30	MessageType, v2-0076, messageType
2.16.840.1.113883.18.31	interpretationCodes
2.16.840.1.113883.18.32	NatureOfAbnormalTesting, v2-0080, natureOfAbnormalTesting
2.16.840.1.113883.18.33	OutlierType, v2-0083, outlierType
2.16.840.1.113883.18.34	ObservationResultStatusCodesInterpretation, v2-0085, observationResultStatusCodesInterpretation
2.16.840.1.113883.18.35	QueryPriority, v2-0091, queryPriority
2.16.840.1.113883.18.36	ReAdmissionIndicator, v2-0092, re-admissionIndicator
2.16.840.1.113883.18.37	TypeOfAgreement, v2-0098, typeOfAgreement
2.16.840.1.113883.18.38	InvocationEvent, v2-0100, invocationEvent
2.16.840.1.113883.18.39	DelayedAcknowledgmentType, v2-0102, delayedAcknowledgmentType
2.16.840.1.113883.18.40	ProcessingId, v2-0103, processingId
2.16.840.1.113883.18.41	VersionId, v2-0104, versionId
2.16.840.1.113883.18.42	SourceOfComment, v2-0105, sourceOfComment
2.16.840.1.113883.18.43	QueryResponseFormat, v2-0106, queryResponseFormat
2.16.840.1.113883.18.44	DeferredResponseType, v2-0107, deferredResponseType
2.16.840.1.113883.18.45	QueryResultsLevel, v2-0108, queryResultsLevel
2.16.840.1.113883.18.46	ReportPriority, v2-0109, reportPriority
2.16.840.1.113883.18.47	BedStatus, v2-0116, bedStatus
2.16.840.1.113883.18.48	OrderControlCodes, v2-0119, orderControlCodes
2.16.840.1.113883.18.49	ResponseFlag, v2-0121, responseFlag
2.16.840.1.113883.18.50	ChargeType, v2-0122, chargeType