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New and Updated Sources (Expanded Representation Information) - 2026AA Release

What's New for 2026AA

General Information:

For 2026AA, there are 5 new translation sources (LNC-AR-JO, MDR-CS-CZ, MDRNOR, MDRSLK, MDRSLV) and 81 updated sources (including translation sources and subsources).

LNC-AR-JO is the Arabic, Jordan Edition of LOINC.
LNC-CS-CZ is the Czech, Czechia Edition of LOINC.

MDRNOR is the Norwegian Edition of the Medical Dictionary for Regulatory Activities Terminology (MedDRA).
MDRSLK is the Slovak Edition of the Medical Dictionary for Regulatory Activities Terminology (MedDRA).
MDRSLV is the Slovenian Edition of the Medical Dictionary for Regulatory Activities Terminology (MedDRA).

For detailed information about sources that are new or have had changes made (e.g., new term types, new attribute names, etc.):

Healthcare Common Procedure Coding System, HCPCS2026
HL7 Vocabulary Version 3.0, HL7V3.0_2025_11
LOINC, Arabic, Jordan Edition, LNC-AR-JO_282
LOINC, Czech, Czechia Edition, LNC-CS-CZ_282
LOINC, LNC282
Medical Dictionary for Regulatory Activities Terminology (MedDRA), Norwegian Edition, MDRNOR28_1
Medical Dictionary for Regulatory Activities Terminology (MedDRA), Slovak Edition, MDRSLK28_1
Medical Dictionary for Regulatory Activities Terminology (MedDRA), Slovenian Edition, MDRSLV28_1
MEDCIN, MEDCIN3_2025_12_19
Thesaurus Biomedical Francais/Anglais (French translation of the Medical Subject Headings), MSHFRE2026
NCI Thesaurus, NCI2025_08D
RXNORM Vocabulary, RXNORM_20AA_260302F
SNOMED Clinical Terms, Spanish Language Edition, SCTSPA_2026_02_10
US Edition of SNOMED CT, SNOMEDCT_US_2026_03_01
------------------------------------------

Source: Healthcare Common Procedure Coding System
VSAB: HCPCS2026

This version includes HCPT2026, the HCPCS Version of Current Procedural Terminology (CPT). HCDT has not been updated due to licensing issues.
------------------------------------------

Source: HL7 Vocabulary Version 3.0
VSAB: HL7V3.0_2025_11

Dropped attribute name (ATN) | Description:
HL7IN|HL7 inverse name
HL7NA|HL7 is navigable
HL7RF|HL7 reflexivity
HL7SY|HL7 symmetry
HL7TR|HL7 transitive
------------------------------------------

Source: LOINC, Arabic, Jordan Edition
VSAB: LNC-AR-JO_282

1. New termtype (TTY) | Description
LC|Long common name
LVDN|Linguistic variant display name

2. New relationship | relationship attribute (RELA) | RELA inverse:
RO|translation_of|has_translation


Discussion:

New translation source.
------------------------------------------

Source: LOINC, Czech, Czechia Edition
VSAB: LNC-CS-CZ_282

1. New termtype (TTY):
LC|Long common name
LN|LOINC official fully specified name
LO|Obsolete official fully specified name
OLC|Obsolete Long common name

2. New relationship | relationship attribute (RELA) | RELA inverse:
RO|translation_of|has_translation


Discussion:

New translation source.
------------------------------------------

Source: LOINC
VSAB: LNC282

New classes | Description
MEPS|MEPS
PANEL.SURVEY.BAECKE|Baecke questionnaire
PANEL.SURVEY.EHEALS|eHealth Literacy Scale
PANEL.SURVEY.MEPS|MEPS Panel
-------------------------------------------------------

Source: Medical Dictionary for Regulatory Activities Terminology (MedDRA), Norwegian Edition
VSAB: MDRNOR28_1

1. New termtype (TTY) | Description:
AB|Abbreviation in any source vocabulary
HG|High Level Group Term
HT|Hierarchical term
LLT|Lower Level Term
OL|Non-current Lower Level Term
OS|System-organ class
PT|Designated preferred name
SMQ|Metathesaurus version of Standardised MedDRA Query

2. New relationship | relationship attribute (RELA) | RELA inverse:
RQ|classifies|classified_as
RO|has_member|member_of
RO|member_of|has_member
SY|expanded_form_of|has_expanded_form
SY|translation_of|has_translation

3. New attribute name (ATN) | Description:
MISO|MedDRA Serial Code International SOC Sort Order Digit (01-26)
MPS|MedDRA primary SOC
SMQ_ALGO|Standardised MedDRA Query (SMQ) Algorithm
SMQ_LEVEL|Standardised MedDRA Query (SMQ) Term Level
SMQ_SOURCE|Standardised MedDRA Query (SMQ) Source
SMQ_STATUS|Standardised MedDRA Query (SMQ) Term Status
SMQ_TERM_ADDVERSION|Standardised MedDRA Query (SMQ) Addition Version
SMQ_TERM_CAT|Standardised MedDRA Query (SMQ) Term Category
SMQ_TERM_LEVEL|Standardised MedDRA Query (SMQ) Term Level
SMQ_TERM_LMVERSION|Standardised MedDRA Query (SMQ) Last Modified Version
SMQ_TERM_SCOPE|Standardised MedDRA Query (SMQ) Term Scope
SMQ_TERM_STATUS|Standardised MedDRA Query (SMQ) Term Status
SMQ_TERM_WEIGHT|Standardised MedDRA Query (SMQ) Term Weight
SOS|Scope Statement


Discussion:

New translation source.
-------------------------------------------------------

Source: Medical Dictionary for Regulatory Activities Terminology (MedDRA), Slovak Edition
VSAB: MDRSLK28_1

1. New termtype (TTY) | Description:
AB|Abbreviation in any source vocabulary
HG|High Level Group Term
HT|Hierarchical term
LLT|Lower Level Term
OL|Non-current Lower Level Term
OS|System-organ class
PT|Designated preferred name
SMQ|Metathesaurus version of Standardised MedDRA Query

2. New relationship | relationship attribute (RELA) | RELA inverse:
RQ|classifies|classified_as
RO|has_member|member_of
RO|member_of|has_member
SY|expanded_form_of|has_expanded_form
SY|translation_of|has_translation

3. New attribute name (ATN) | Description:
MISO|MedDRA Serial Code International SOC Sort Order Digit (01-26)
MPS|MedDRA primary SOC
SMQ_ALGO|Standardised MedDRA Query (SMQ) Algorithm
SMQ_LEVEL|Standardised MedDRA Query (SMQ) Term Level
SMQ_SOURCE|Standardised MedDRA Query (SMQ) Source
SMQ_STATUS|Standardised MedDRA Query (SMQ) Term Status
SMQ_TERM_ADDVERSION|Standardised MedDRA Query (SMQ) Addition Version
SMQ_TERM_CAT|Standardised MedDRA Query (SMQ) Term Category
SMQ_TERM_LEVEL|Standardised MedDRA Query (SMQ) Term Level
SMQ_TERM_LMVERSION|Standardised MedDRA Query (SMQ) Last Modified Version
SMQ_TERM_SCOPE|Standardised MedDRA Query (SMQ) Term Scope
SMQ_TERM_STATUS|Standardised MedDRA Query (SMQ) Term Status
SMQ_TERM_WEIGHT|Standardised MedDRA Query (SMQ) Term Weight
SOS|Scope Statement


Discussion:

New translation source.
-------------------------------------------------------

Source: Medical Dictionary for Regulatory Activities Terminology (MedDRA), Slovenian Edition
VSAB: MDRSLV28_1

1. New termtype (TTY) | Description:
AB|Abbreviation in any source vocabulary
HG|High Level Group Term
HT|Hierarchical term
LLT|Lower Level Term
OL|Non-current Lower Level Term
OS|System-organ class
PT|Designated preferred name
SMQ|Metathesaurus version of Standardised MedDRA Query

2. New relationship | relationship attribute (RELA) | RELA inverse:
RQ|classifies|classified_as
RO|has_member|member_of
RO|member_of|has_member
SY|expanded_form_of|has_expanded_form
SY|translation_of|has_translation

3. New attribute name (ATN) | Description:
MISO|MedDRA Serial Code International SOC Sort Order Digit (01-26)
MPS|MedDRA primary SOC
SMQ_ALGO|Standardised MedDRA Query (SMQ) Algorithm
SMQ_LEVEL|Standardised MedDRA Query (SMQ) Term Level
SMQ_SOURCE|Standardised MedDRA Query (SMQ) Source
SMQ_STATUS|Standardised MedDRA Query (SMQ) Term Status
SMQ_TERM_ADDVERSION|Standardised MedDRA Query (SMQ) Addition Version
SMQ_TERM_CAT|Standardised MedDRA Query (SMQ) Term Category
SMQ_TERM_LEVEL|Standardised MedDRA Query (SMQ) Term Level
SMQ_TERM_LMVERSION|Standardised MedDRA Query (SMQ) Last Modified Version
SMQ_TERM_SCOPE|Standardised MedDRA Query (SMQ) Term Scope
SMQ_TERM_STATUS|Standardised MedDRA Query (SMQ) Term Status
SMQ_TERM_WEIGHT|Standardised MedDRA Query (SMQ) Term Weight
SOS|Scope Statement


Discussion:

New translation source.
-------------------------------------------------------

Source: MEDCIN
VSAB: MEDCIN3_2025_12_19

1. New relationship | relationship attribute (RELA) | RELA inverse:
RO|before|after
RO|has_procedure_approach|procedure_approach_of
RO|has_proper_part_of|proper_part_of

2. Dropped relationship | relationship attribute (RELA) | RELA inverse:
RO|has_surgical_approach| surgical_approach_of
-------------------------------------------------------

Source: Thesaurus Biomedical Francais/Anglais (French translation of the Medical Subject Headings)
VSAB: MSHFRE2026

New termtype (TTY) | Description:
TQ|Topical qualifier
XQ|Alternate name for a qualifier
------------------------------------------

Source: NCI Thesaurus
VSAB: NCI2025_08D

1. New relationship | relationship attribute (RELA):
RO|has_salt_or_ester_form

2. Dropped relationship | relationship attribute (RELA:
RO|has_salt_form


Discussion:

RELA 'has_salt_form' was updated to 'has_salt_or_ester_form'. The inverse RELA remains the same at 'has_free_acid_or_base_form'.
------------------------------------------

Source: RXNORM Vocabulary
VSAB: RXNORM_20AA_260302F

This version includes:
ATC_2026 (Anatomical Therapeutic Chemical Classification System)
CVX_2026_02_12 (Vaccines Administered)
DRUGBANK5.0_2026_01_28 (DrugBank)
GS_2026_02_04 (Gold Standard Drug Database)
MMSL_2026_02_01 (Multum MediSource Lexicon)
MMX_2026_01_30 (Micromedex RED BOOK)
MTHCMSFRF_2020_26_03_02 (Metathesaurus CMS Formulary Reference File)
MTHSPL_2026_02_21 (Metathesaurus FDA Structured Product Labels)
NDDF_2026_02_04 (FDB MedKnowledge)
USP_2026_01_27 (USP Compendial Nomenclature)
VANDF_2026_01_30 (Veterans Health Administration National Drug File)
-----------------------------------------------

Source: SNOMED Clinical Terms, Spanish Language Edition
VSAB: SCTSPA_2026_02_10

1. New relationship | relationship attribute (RELA) | RELA inverse:
RO|has_manufactured_dose_form|manufactured_dose_form_of
RO|has_procedure_approach|procedure_approach_of
RO|regional_part_of|has_regional_part

2. Dropped relationship | relationship attribute (RELA) | RELA inverse:
RO|has_dose_form|dose_form_of
-----------------------------------------------

Source: US Edition of SNOMED CT
VSAB: SNOMEDCT_US_2026_03_01

New relationship | relationship attribute (RELA) | RELA inverse:
RO|regional_part_of|has_regional_part
-----------------------------------------------

Last Reviewed: May 1, 2026