Reference record for OID 2.16.840.1.113883.6.164

Parent

2.16.840.1.113883.6 (externalCodeSystems, ExternalCodeSystems)

Node code

164

Node names

mDREX
MDREX

Numeric OID

2.16.840.1.113883.6.164

URN notation

urn:oid:2.16.840.1.113883.6.164

ASN.1 notation

{2 16 840 1 113883 6 164}

{joint-iso-itu-t(2) country(16) us(840) organization(1) hl7(113883) externalCodeSystems(6) mDREX(164)}
{joint-iso-itu-t(2) country(16) us-joint(840) organization(1) hl7(113883) externalCodeSystems(6) mDREX(164)}
{joint-iso-ccitt(2) country(16) us(840) organization(1) hl7(113883) externalCodeSystems(6) mDREX(164)}
{joint-iso-ccitt(2) country(16) us-joint(840) organization(1) hl7(113883) externalCodeSystems(6) mDREX(164)}

OID-IRI notation

/2/16/840/1/113883/6/164
/Country/840/1/113883/6/164
/Joint-ISO-ITU-T/16/840/1/113883/6/164

Named path variants

/joint-iso-itu-t/country/us/organization/hl7/externalCodeSystems/mDREX
/joint-iso-itu-t/country/us/organization/hl7/externalCodeSystems/MDREX
/joint-iso-itu-t/country/us/organization/hl7/ExternalCodeSystems/mDREX
/joint-iso-itu-t/country/us/organization/hl7/ExternalCodeSystems/MDREX
/joint-iso-itu-t/country/us/organization/HL7/externalCodeSystems/mDREX
/joint-iso-itu-t/country/us/organization/HL7/externalCodeSystems/MDREX
/joint-iso-itu-t/country/us/organization/HL7/ExternalCodeSystems/mDREX
/joint-iso-itu-t/country/us/organization/HL7/ExternalCodeSystems/MDREX
/joint-iso-itu-t/country/us-joint/organization/hl7/externalCodeSystems/mDREX
/joint-iso-itu-t/country/us-joint/organization/hl7/externalCodeSystems/MDREX
/joint-iso-itu-t/country/us-joint/organization/hl7/ExternalCodeSystems/mDREX
/joint-iso-itu-t/country/us-joint/organization/hl7/ExternalCodeSystems/MDREX
/joint-iso-itu-t/country/us-joint/organization/HL7/externalCodeSystems/mDREX
/joint-iso-itu-t/country/us-joint/organization/HL7/externalCodeSystems/MDREX
/joint-iso-itu-t/country/us-joint/organization/HL7/ExternalCodeSystems/mDREX
/joint-iso-itu-t/country/us-joint/organization/HL7/ExternalCodeSystems/MDREX
Additional combinations skipped.

Descriptions

Descriptions may differ between sources. The primary description is shown first.

Primary description: OID Repository

Medical Dictionary for Regulatory Activities Terminology (MedDRA), expanded
View at oid-base.com

Medical Dictionary for Regulatory Activities Terminology (MedDRA), with expanded abbreviations, Version 7.0. Bethesda, MD: National Library of Medicine, March 1, 2004.

(Automatically extracted from the Health Level 7 OID Registry)

MDREX — HL7 Terminology

Medical Dictionary for Regulatory Activities Terminology (MedDRA), with expanded abbreviations, Version 7.0. Bethesda, MD: National Library of Medicine, March 1, 2004.

Source records

MDREX

Status in source: retired.

Names: MDREX

Technical details

{
  "url": "http://terminology.hl7.org/NamingSystem/MDREX",
  "date": "2021-11-09T10:00:00+10:00",
  "kind": "codesystem",
  "title": "MedDRA expanded",
  "status": "retired",
  "contact": [
    {
      "name": "MedDRA MSSO/ Northrop Grumman,MedDRA MSSO/ Northrop Grumman"
    }
  ],
  "version": "2.1.0",
  "publisher": "ICH",
  "responsible": "ICH",
  "resource_type": "NamingSystem",
  "oid_identifier": {
    "type": "oid",
    "value": "2.16.840.1.113883.6.164",
    "preferred": true
  },
  "other_identifiers": [
    {
      "type": "uri",
      "value": "http://terminology.hl7.org/CodeSystem/MDREX",
      "preferred": true
    }
  ]
}

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

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

MDREX

Status in source: complete.

Names: MDREX

Technical details

{
  "organization": "MedDRA MSSO/ Northrop Grumman,MedDRA MSSO/ Northrop Grumman",
  "coding_system_name": "MedDRA expanded",
  "published_oid_type": "6"
}

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[931] / Comp_OID 2.16.840.1.113883.6.164.
Source version and references

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

First Registration Authority (inferred from ancestor 2.16.840.1.113883)

W. Ted Klein

Current Registration Authority

Elizabeth A. D'Alelio

Address: 12011 Sunset Hills Rd, VAR1 7B52, Reston, VA 20190
United States (the)

Phone: +1703 345 7722

Direct children (1)

OID	Name	Direct children	Descendants	Description
2.16.840.1.113883.6.164.1	mDREA, MDREA	0	0	Medical Dictionary for Regulatory Activities Terminology (MedDRA), Am Engl expanded

Siblings (301)

OID	Name	Direct children	Descendants	Description
2.16.840.1.113883.6.51	51, SNM3	0	0	SNOMED International SNM3
2.16.840.1.113883.6.52	52, SNT	0	0	SNOMED topology codes (anatomic sites) SNT
2.16.840.1.113883.6.53	53, SDM	0	0	SNOMED- DICOM Microglossary SDM
2.16.840.1.113883.6.54	54, UC	0	0	UCDS UC
2.16.840.1.113883.6.55	55, UPC	0	0	Universal Product Code UPC
2.16.840.1.113883.6.56	56, UML	0	0	Unified Medical Language UML
2.16.840.1.113883.6.57	57, CDCA	0	0	CDC Analyte Codes CDCA
2.16.840.1.113883.6.58	58, CDCM	0	0	CDC Methods/Instruments Codes CDCM
2.16.840.1.113883.6.59	59, cvx	0	0	Centers for Disease Control and prevention (CDC) vaccine codes used in the 1999 Rich Release Format (RRF) research project at H…
2.16.840.1.113883.6.60	60, MVX, mvx	0	0	Centers for Disease Control and prevention (CDC) Vaccine Manufacturer Codes ("MVX")
2.16.840.1.113883.6.61	61, CAS	0	0	Chemical abstract codes CAS
2.16.840.1.113883.6.62	62, CST	0	0	COSTART CST
2.16.840.1.113883.6.63	63, FDDX	0	0	First DataBank Diagnostic Codes FDDX
2.16.840.1.113883.6.64	64, FDDC	0	0	First DataBank Drug Codes FDDC
2.16.840.1.113883.6.65	65, MDDX, medispanMedicalConditions	0	0	Medispan Diagnostic Codes MDDX
2.16.840.1.113883.6.66	66, MEDX	0	0	Medical Economics Diagnostic Codes MEDX
2.16.840.1.113883.6.67	67, MEDC	0	0	Medical Economics Drug Codes MEDC
2.16.840.1.113883.6.68	68, MGPI, medispanGPI	0	0	Medispan GPI MGPI
2.16.840.1.113883.6.69	69, Ndc, v3-ndc, ndc	0	0	National drug codes NDC
2.16.840.1.113883.6.70	MEDR	0	0
2.16.840.1.113883.6.71	71, W1-W2, W1W2, whoDDDrugCode	0	0	WHO rec# drug codes W1, W2
2.16.840.1.113883.6.72	72, W4	0	0	WHO rec# code with ASTM extension W4
2.16.840.1.113883.6.73	73, WC, v3-WC, whoATC	5	5	WHO ATC WC
2.16.840.1.113883.6.74	74, Art, art	0	0	WHO Adverse Reaction Terms ART
2.16.840.1.113883.6.75	75, UMD	0	0	MDNS UMD
2.16.840.1.113883.6.76	76, ACR	0	0	American College of Radiology finding codes ACR
2.16.840.1.113883.6.77	77, ATC	0	0	American Type Culture Collection ATC
2.16.840.1.113883.6.78	78, AS4E, as4e	0	0	AS4 Neurophysiology Codes AS4E
2.16.840.1.113883.6.79	79, CDS	0	0	CDC Surveillance CDS
2.16.840.1.113883.6.80	80, CE	0	0	CEN ECG diagnostic codes CE
2.16.840.1.113883.6.81	81, CLP	0	0	CLIP CLP
2.16.840.1.113883.6.82	82, C5	0	0	CPT-5 C5
2.16.840.1.113883.6.83	dcl, DCL	0	0	Digital Imaging and COmmunications in Medicine (DICOM) class label
2.16.840.1.113883.6.84	84, IETF1766	0	0	Tags for the identification of languages IETF1766
2.16.840.1.113883.6.85	85, Naics, naics	0	0	North American Industry Classification System (NAICS) for the United States
2.16.840.1.113883.6.86	86, Umls, umls	0	0	Unified Medical Language System (UMLS) codes as Concept Unique Identifiers (CUIs) making up the values in a coding system
2.16.840.1.113883.6.87	87, Nmds, nmds	0	0	The NMDS is the minimum set of items of information with uniform definitions and categories concerning the specific dimension o…
2.16.840.1.113883.6.88	rxNorm, RxNorm, v3-rxNorm	0	0
2.16.840.1.113883.6.89	89, DeedsOld, deeds-old	0	0	"DEEDS"
2.16.840.1.113883.6.90	90, Icd10CM, icd10CM	0	0	The International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM), describes the classification of…
2.16.840.1.113883.6.91	fipspub92, Fipspub92	0	0	FIPSPUB92 "Guideline for Standard Occupational Classification (SOC) Codes", version 24 Feb 1983
2.16.840.1.113883.6.92	92, FIPS52, FIPS5_2, fipsPUB2	0	0	FIPSPUB-2 - CODES FOR THE IDENTIFICATION OF THE STATES, THE DISTRICT OF COLUMBIA AND THE OUTLYING AREAS OF THE UNITED STATES, A…
2.16.840.1.113883.6.93	93, FIPS64, FIPS6_4, fipsPUB6-4	0	0	FIPSPUB6-4 - Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, version 1990 August …
2.16.840.1.113883.6.94	94, ICD10CA, icd10-CA	0	0	ICD10 with Canadian modifications ICD10-Ca
2.16.840.1.113883.6.95	95, CCI, v3-cci, cci	0	0	Placeholder for Health Level 7 (HL7) Canada request CCI
2.16.840.1.113883.6.96	96, SNOMED_CT_INT, v3-snomed-CT, snomed-CT	1	1	Systematized Nomenclature of Medicine-Clinical Terms (SNOMED CT)
2.16.840.1.113883.6.97	97, Icnp, icnp	0	0	ICNP(R) is a combinatorial terminology, using a multi-axial structure. ICNP(R) provides standardized terms and codes for terms …
2.16.840.1.113883.6.98	98, Oms, oms	0	0	The Omaha System provides standardized terms, definitions, and codes for observations and procedures, specifically for client p…
2.16.840.1.113883.6.99	iso639-1, Iso6391ret, iso639-1ret, ISO639-1	0	0	ISO 639: Codes for the Representation of Names of Languages -- Part 1: Alpha-2 Code
2.16.840.1.113883.6.100	iso639-2, Iso6392ret, iso639-2ret, ISO639-2	0	0	ISO639-2: Codes for the Representation of Names of Languages -- Part 2: Alpha-3 Code