Get Vocabulary Mappings

curl -X GET "https://api.omophub.com/v1/mappings/vocabularies/SNOMED/ICD10CM?domain_ids=Condition&include_statistics=true&include_mapping_quality=true" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json"

{
  "success": true,
  "data": {
    "vocabulary_pair": {
      "source_vocabulary": {
        "vocabulary_id": "SNOMED",
        "vocabulary_name": "Systematized Nomenclature of Medicine Clinical Terms",
        "vocabulary_reference": "http://www.snomed.org/",
        "vocabulary_version": "20240301",
        "total_concepts": 387421
      },
      "target_vocabulary": {
        "vocabulary_id": "ICD10CM",
        "vocabulary_name": "International Classification of Diseases, Tenth Revision, Clinical Modification",
        "vocabulary_reference": "https://www.cdc.gov/nchs/icd/icd10cm.htm",
        "vocabulary_version": "2024",
        "total_concepts": 98234
      },
      "mapping_relationship": "SNOMED CT clinical concepts mapped to ICD-10-CM billing codes for US healthcare"
    },
    "mappings": [
      {
        "mapping_id": "map_201826_45757292",
        "source_concept": {
          "concept_id": 201826,
          "concept_name": "Type 2 diabetes mellitus",
          "concept_code": "44054006",
          "domain_id": "Condition",
          "concept_class_id": "Clinical Finding",
          "standard_concept": "S"
        },
        "target_concept": {
          "concept_id": 45757292,
          "concept_name": "Type 2 diabetes mellitus",
          "concept_code": "E11",
          "domain_id": "Condition",
          "concept_class_id": "3-char billing code",
          "standard_concept": "S"
        },
        "mapping_type": "Maps to",
        "mapping_quality": {
          "confidence_score": 0.98,
          "equivalence_type": "exact",
          "semantic_similarity": 0.95,
          "mapping_source": "official",
          "validation_status": "validated"
        },
        "valid_start_date": "2016-10-01T00:00:00Z",
        "valid_end_date": "2099-12-31T00:00:00Z"
      },
      {
        "mapping_id": "map_320128_44784217",
        "source_concept": {
          "concept_id": 320128,
          "concept_name": "Essential hypertension",
          "concept_code": "59621000",
          "domain_id": "Condition",
          "concept_class_id": "Clinical Finding",
          "standard_concept": "S"
        },
        "target_concept": {
          "concept_id": 44784217,
          "concept_name": "Essential hypertension",
          "concept_code": "I10",
          "domain_id": "Condition",
          "concept_class_id": "3-char billing code",
          "standard_concept": "S"
        },
        "mapping_type": "Maps to",
        "mapping_quality": {
          "confidence_score": 0.97,
          "equivalence_type": "exact",
          "semantic_similarity": 0.94,
          "mapping_source": "official",
          "validation_status": "validated"
        },
        "valid_start_date": "2016-10-01T00:00:00Z",
        "valid_end_date": "2099-12-31T00:00:00Z"
      }
    ],
    "mapping_statistics": {
      "total_mappings": 156789,
      "coverage_analysis": {
        "source_coverage": {
          "concepts_with_mappings": 234567,
          "concepts_without_mappings": 152854,
          "coverage_percentage": 60.5,
          "domain_coverage": {
            "Condition": 78.2,
            "Procedure": 45.7,
            "Observation": 23.1
          }
        },
        "target_coverage": {
          "concepts_with_mappings": 87432,
          "concepts_without_mappings": 10802,
          "coverage_percentage": 89.0
        }
      },
      "quality_distribution": {
        "equivalence_type_counts": {
          "exact": 98765,
          "broader": 34567,
          "narrower": 15234,
          "related": 8223
        },
        "confidence_score_ranges": {
          "0.9-1.0": 78543,
          "0.8-0.9": 45678,
          "0.7-0.8": 23456,
          "0.6-0.7": 9112
        },
        "validation_status_counts": {
          "validated": 134567,
          "pending": 15678,
          "disputed": 3456,
          "deprecated": 3088
        },
        "average_confidence_score": 0.874
      },
      "domain_distribution": {
        "Condition": 89234,
        "Procedure": 45678,
        "Observation": 12456,
        "Measurement": 6789,
        "Device": 2632
      },
      "concept_class_distribution": {
        "Clinical Finding": 67890,
        "Procedure": 34567,
        "3-char billing code": 23456,
        "4-char billing code": 12345,
        "Observable Entity": 8765
      },
      "temporal_analysis": {
        "oldest_mapping_date": "2016-10-01T00:00:00Z",
        "newest_mapping_date": "2024-03-15T00:00:00Z",
        "mappings_by_year": {
          "2016": 98765,
          "2017": 12345,
          "2018": 8976,
          "2019": 15432,
          "2020": 7654
        },
        "recent_updates": 3456
      }
    },
    "mapping_gaps": {
      "source_gaps": {
        "total_unmapped_concepts": 152854,
        "unmapped_by_domain": {
          "Observation": 78432,
          "Measurement": 34567,
          "Condition": 23456,
          "Procedure": 16399
        },
        "unmapped_by_concept_class": {
          "Observable Entity": 56789,
          "Clinical Finding": 34567,
          "Procedure": 23456
        },
        "sample_unmapped_concepts": [
          {
            "concept_id": 4567890,
            "concept_name": "Blood pressure taking",
            "concept_code": "75367002",
            "domain_id": "Observation"
          }
        ],
        "gap_patterns": [
          "Many observational procedures lack ICD-10-CM equivalents",
          "Complex procedures often map to broader categories",
          "Specialized measurements have limited billing code coverage"
        ]
      },
      "recommendations": [
        "Consider using HCPCS for unmapped procedures",
        "Review observation domain mappings with clinical experts",
        "Implement custom mapping rules for specialized concepts"
      ]
    }
  },
  "meta": {
    "pagination": {
      "page": 1,
      "page_size": 1000,
      "total_items": 156789,
      "total_pages": 157,
      "has_next": true,
      "has_previous": false
    },
    "request_id": "req_vocab_mappings_789012",
    "timestamp": "2024-12-22T10:30:00Z",
    "vocab_release": "2025.2"
  }
}

GET

mappings

vocabularies

{source_vocabulary_id}

{target_vocabulary_id}

curl -X GET "https://api.omophub.com/v1/mappings/vocabularies/SNOMED/ICD10CM?domain_ids=Condition&include_statistics=true&include_mapping_quality=true" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json"

{
  "success": true,
  "data": {
    "vocabulary_pair": {
      "source_vocabulary": {
        "vocabulary_id": "SNOMED",
        "vocabulary_name": "Systematized Nomenclature of Medicine Clinical Terms",
        "vocabulary_reference": "http://www.snomed.org/",
        "vocabulary_version": "20240301",
        "total_concepts": 387421
      },
      "target_vocabulary": {
        "vocabulary_id": "ICD10CM",
        "vocabulary_name": "International Classification of Diseases, Tenth Revision, Clinical Modification",
        "vocabulary_reference": "https://www.cdc.gov/nchs/icd/icd10cm.htm",
        "vocabulary_version": "2024",
        "total_concepts": 98234
      },
      "mapping_relationship": "SNOMED CT clinical concepts mapped to ICD-10-CM billing codes for US healthcare"
    },
    "mappings": [
      {
        "mapping_id": "map_201826_45757292",
        "source_concept": {
          "concept_id": 201826,
          "concept_name": "Type 2 diabetes mellitus",
          "concept_code": "44054006",
          "domain_id": "Condition",
          "concept_class_id": "Clinical Finding",
          "standard_concept": "S"
        },
        "target_concept": {
          "concept_id": 45757292,
          "concept_name": "Type 2 diabetes mellitus",
          "concept_code": "E11",
          "domain_id": "Condition",
          "concept_class_id": "3-char billing code",
          "standard_concept": "S"
        },
        "mapping_type": "Maps to",
        "mapping_quality": {
          "confidence_score": 0.98,
          "equivalence_type": "exact",
          "semantic_similarity": 0.95,
          "mapping_source": "official",
          "validation_status": "validated"
        },
        "valid_start_date": "2016-10-01T00:00:00Z",
        "valid_end_date": "2099-12-31T00:00:00Z"
      },
      {
        "mapping_id": "map_320128_44784217",
        "source_concept": {
          "concept_id": 320128,
          "concept_name": "Essential hypertension",
          "concept_code": "59621000",
          "domain_id": "Condition",
          "concept_class_id": "Clinical Finding",
          "standard_concept": "S"
        },
        "target_concept": {
          "concept_id": 44784217,
          "concept_name": "Essential hypertension",
          "concept_code": "I10",
          "domain_id": "Condition",
          "concept_class_id": "3-char billing code",
          "standard_concept": "S"
        },
        "mapping_type": "Maps to",
        "mapping_quality": {
          "confidence_score": 0.97,
          "equivalence_type": "exact",
          "semantic_similarity": 0.94,
          "mapping_source": "official",
          "validation_status": "validated"
        },
        "valid_start_date": "2016-10-01T00:00:00Z",
        "valid_end_date": "2099-12-31T00:00:00Z"
      }
    ],
    "mapping_statistics": {
      "total_mappings": 156789,
      "coverage_analysis": {
        "source_coverage": {
          "concepts_with_mappings": 234567,
          "concepts_without_mappings": 152854,
          "coverage_percentage": 60.5,
          "domain_coverage": {
            "Condition": 78.2,
            "Procedure": 45.7,
            "Observation": 23.1
          }
        },
        "target_coverage": {
          "concepts_with_mappings": 87432,
          "concepts_without_mappings": 10802,
          "coverage_percentage": 89.0
        }
      },
      "quality_distribution": {
        "equivalence_type_counts": {
          "exact": 98765,
          "broader": 34567,
          "narrower": 15234,
          "related": 8223
        },
        "confidence_score_ranges": {
          "0.9-1.0": 78543,
          "0.8-0.9": 45678,
          "0.7-0.8": 23456,
          "0.6-0.7": 9112
        },
        "validation_status_counts": {
          "validated": 134567,
          "pending": 15678,
          "disputed": 3456,
          "deprecated": 3088
        },
        "average_confidence_score": 0.874
      },
      "domain_distribution": {
        "Condition": 89234,
        "Procedure": 45678,
        "Observation": 12456,
        "Measurement": 6789,
        "Device": 2632
      },
      "concept_class_distribution": {
        "Clinical Finding": 67890,
        "Procedure": 34567,
        "3-char billing code": 23456,
        "4-char billing code": 12345,
        "Observable Entity": 8765
      },
      "temporal_analysis": {
        "oldest_mapping_date": "2016-10-01T00:00:00Z",
        "newest_mapping_date": "2024-03-15T00:00:00Z",
        "mappings_by_year": {
          "2016": 98765,
          "2017": 12345,
          "2018": 8976,
          "2019": 15432,
          "2020": 7654
        },
        "recent_updates": 3456
      }
    },
    "mapping_gaps": {
      "source_gaps": {
        "total_unmapped_concepts": 152854,
        "unmapped_by_domain": {
          "Observation": 78432,
          "Measurement": 34567,
          "Condition": 23456,
          "Procedure": 16399
        },
        "unmapped_by_concept_class": {
          "Observable Entity": 56789,
          "Clinical Finding": 34567,
          "Procedure": 23456
        },
        "sample_unmapped_concepts": [
          {
            "concept_id": 4567890,
            "concept_name": "Blood pressure taking",
            "concept_code": "75367002",
            "domain_id": "Observation"
          }
        ],
        "gap_patterns": [
          "Many observational procedures lack ICD-10-CM equivalents",
          "Complex procedures often map to broader categories",
          "Specialized measurements have limited billing code coverage"
        ]
      },
      "recommendations": [
        "Consider using HCPCS for unmapped procedures",
        "Review observation domain mappings with clinical experts",
        "Implement custom mapping rules for specialized concepts"
      ]
    }
  },
  "meta": {
    "pagination": {
      "page": 1,
      "page_size": 1000,
      "total_items": 156789,
      "total_pages": 157,
      "has_next": true,
      "has_previous": false
    },
    "request_id": "req_vocab_mappings_789012",
    "timestamp": "2024-12-22T10:30:00Z",
    "vocab_release": "2025.2"
  }
}

This endpoint provides bulk access to all mapping relationships between two vocabularies, essential for data integration, terminology harmonization, and cross-system interoperability. It’s particularly useful for understanding mapping coverage and implementing vocabulary translation services.

Path Parameters

source_vocabulary_id

string

required

The source vocabulary identifier
Example: SNOMED, ICD10CM, RxNorm

target_vocabulary_id

string

required

The target vocabulary identifier
Example: ICD10CM, ICD10, HCPCS

Query Parameters

domain_ids

string

Filter mappings to specific domains
Example: Condition,Drug,Procedure

concept_class_ids

string

Filter mappings to specific concept classes
Example: Clinical Finding,Procedure

mapping_types

string

Filter by specific mapping relationship types
Default: Maps to,Mapped from
Example: Maps to,Maps to value

standard_concepts_only

string

default:"both"

Filter by standard concept status
Options: source, target, both, either, none

include_mapping_quality

boolean

default:"false"

Include mapping quality scores and metadata

include_statistics

boolean

default:"false"

Include statistical analysis of the mapping set

include_gaps

boolean

default:"false"

Include analysis of unmapped concepts (gaps)

quality_threshold

number

Minimum mapping quality score (0-1)
Example: 0.8

equivalence_types

string

Filter by mapping equivalence types
Example: exact,broader,narrower

active_only

boolean

default:"true"

Only include mappings between active concepts

sort_by

string

default:"source_concept_id"

Sort mappings by specified field
Options: source_concept_id, target_concept_id, source_concept_name, mapping_quality

sort_order

string

default:"asc"

Sort order for mappings
Options: asc, desc

page_size

integer

default:"1000"

Number of mappings to return per page (max 5000)

page

integer

default:"1"

Page number for pagination (1-based)

Response

vocabulary_pair

object

Information about the source and target vocabularies

Show Vocabulary Pair Object

source_vocabulary

object

Source vocabulary information

Show Vocabulary Information Object

vocabulary_id

string

Vocabulary identifier

vocabulary_name

string

Human-readable vocabulary name

vocabulary_reference

string

Official reference or URL

vocabulary_version

string

Current version

total_concepts

integer

Total concepts in vocabulary

target_vocabulary

object

Target vocabulary information (same structure as source)

mapping_relationship

string

Description of the mapping relationship between vocabularies

mappings

array

Array of mapping relationships between the vocabularies

Show Vocabulary Mapping Object

mapping_id

string

Unique identifier for this mapping

source_concept

object

Source vocabulary concept

Show Source Concept Object

concept_id

integer

Source concept identifier

concept_name

string

Source concept name

concept_code

string

Source concept code

domain_id

string

Source concept domain

concept_class_id

string

Source concept class

standard_concept

string

Standard concept designation

target_concept

object

Target vocabulary concept (same structure as source)

mapping_type

string

Type of mapping relationship

mapping_quality

object

Quality assessment (when include_mapping_quality=true)

Show Mapping Quality Object

confidence_score

number

Confidence in mapping accuracy (0-1)

equivalence_type

string

Type of concept equivalence

semantic_similarity

number

Semantic similarity score (0-1)

mapping_source

string

Source of the mapping

validation_status

string

Validation status

valid_start_date

string

Date when mapping became valid

valid_end_date

string

Date when mapping becomes invalid

mapping_statistics

object

Statistical analysis of the vocabulary mappings (when include_statistics=true)

Show Mapping Statistics Object

total_mappings

integer

Total number of mappings between vocabularies

coverage_analysis

object

Analysis of mapping coverage

Show Coverage Analysis Object

source_coverage

object

Coverage statistics for source vocabulary

Show Source Coverage Object

concepts_with_mappings

integer

Source concepts that have target mappings

concepts_without_mappings

integer

Source concepts without target mappings

coverage_percentage

number

Percentage of source concepts with mappings

domain_coverage

object

Coverage breakdown by domain

target_coverage

object

Coverage statistics for target vocabulary (similar structure)

quality_distribution

object

Distribution of mapping quality scores

Show Quality Distribution Object

equivalence_type_counts

object

Count of mappings by equivalence type

confidence_score_ranges

object

Distribution of confidence scores by range

validation_status_counts

object

Count of mappings by validation status

average_confidence_score

number

Average confidence score across all mappings

domain_distribution

object

Count of mappings by domain

concept_class_distribution

object

Count of mappings by concept class

temporal_analysis

object

Analysis of mapping creation and updates over time

Show Temporal Analysis Object

oldest_mapping_date

string

Date of oldest mapping

newest_mapping_date

string

Date of newest mapping

mappings_by_year

object

Count of mappings created by year

recent_updates

integer

Mappings updated in last 90 days

mapping_gaps

object

Analysis of unmapped concepts (when include_gaps=true)

Show Mapping Gaps Object

source_gaps

object

Source concepts without target mappings

Show Source Gaps Object

total_unmapped_concepts

integer

Total unmapped source concepts

unmapped_by_domain

object

Unmapped concept counts by domain

unmapped_by_concept_class

object

Unmapped concept counts by concept class

sample_unmapped_concepts

array

Sample of unmapped concepts for analysis

gap_patterns

array

Common patterns in unmapped concepts

target_gaps

object

Target concepts without source mappings (similar structure)

recommendations

array

Recommendations for improving mapping coverage

meta

object

Response metadata and pagination information

Show Metadata Object

pagination

object

page

integer

Current page number

page_size

integer

Items per page

total_items

integer

Total mappings

total_pages

integer

Total number of pages

has_next

boolean

Whether next page exists

has_previous

boolean

Whether previous page exists

query_time_ms

number

Time taken to execute the query

data_freshness

string

Timestamp of underlying mapping data

curl -X GET "https://api.omophub.com/v1/mappings/vocabularies/SNOMED/ICD10CM?domain_ids=Condition&include_statistics=true&include_mapping_quality=true" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json"

{
  "success": true,
  "data": {
    "vocabulary_pair": {
      "source_vocabulary": {
        "vocabulary_id": "SNOMED",
        "vocabulary_name": "Systematized Nomenclature of Medicine Clinical Terms",
        "vocabulary_reference": "http://www.snomed.org/",
        "vocabulary_version": "20240301",
        "total_concepts": 387421
      },
      "target_vocabulary": {
        "vocabulary_id": "ICD10CM",
        "vocabulary_name": "International Classification of Diseases, Tenth Revision, Clinical Modification",
        "vocabulary_reference": "https://www.cdc.gov/nchs/icd/icd10cm.htm",
        "vocabulary_version": "2024",
        "total_concepts": 98234
      },
      "mapping_relationship": "SNOMED CT clinical concepts mapped to ICD-10-CM billing codes for US healthcare"
    },
    "mappings": [
      {
        "mapping_id": "map_201826_45757292",
        "source_concept": {
          "concept_id": 201826,
          "concept_name": "Type 2 diabetes mellitus",
          "concept_code": "44054006",
          "domain_id": "Condition",
          "concept_class_id": "Clinical Finding",
          "standard_concept": "S"
        },
        "target_concept": {
          "concept_id": 45757292,
          "concept_name": "Type 2 diabetes mellitus",
          "concept_code": "E11",
          "domain_id": "Condition",
          "concept_class_id": "3-char billing code",
          "standard_concept": "S"
        },
        "mapping_type": "Maps to",
        "mapping_quality": {
          "confidence_score": 0.98,
          "equivalence_type": "exact",
          "semantic_similarity": 0.95,
          "mapping_source": "official",
          "validation_status": "validated"
        },
        "valid_start_date": "2016-10-01T00:00:00Z",
        "valid_end_date": "2099-12-31T00:00:00Z"
      },
      {
        "mapping_id": "map_320128_44784217",
        "source_concept": {
          "concept_id": 320128,
          "concept_name": "Essential hypertension",
          "concept_code": "59621000",
          "domain_id": "Condition",
          "concept_class_id": "Clinical Finding",
          "standard_concept": "S"
        },
        "target_concept": {
          "concept_id": 44784217,
          "concept_name": "Essential hypertension",
          "concept_code": "I10",
          "domain_id": "Condition",
          "concept_class_id": "3-char billing code",
          "standard_concept": "S"
        },
        "mapping_type": "Maps to",
        "mapping_quality": {
          "confidence_score": 0.97,
          "equivalence_type": "exact",
          "semantic_similarity": 0.94,
          "mapping_source": "official",
          "validation_status": "validated"
        },
        "valid_start_date": "2016-10-01T00:00:00Z",
        "valid_end_date": "2099-12-31T00:00:00Z"
      }
    ],
    "mapping_statistics": {
      "total_mappings": 156789,
      "coverage_analysis": {
        "source_coverage": {
          "concepts_with_mappings": 234567,
          "concepts_without_mappings": 152854,
          "coverage_percentage": 60.5,
          "domain_coverage": {
            "Condition": 78.2,
            "Procedure": 45.7,
            "Observation": 23.1
          }
        },
        "target_coverage": {
          "concepts_with_mappings": 87432,
          "concepts_without_mappings": 10802,
          "coverage_percentage": 89.0
        }
      },
      "quality_distribution": {
        "equivalence_type_counts": {
          "exact": 98765,
          "broader": 34567,
          "narrower": 15234,
          "related": 8223
        },
        "confidence_score_ranges": {
          "0.9-1.0": 78543,
          "0.8-0.9": 45678,
          "0.7-0.8": 23456,
          "0.6-0.7": 9112
        },
        "validation_status_counts": {
          "validated": 134567,
          "pending": 15678,
          "disputed": 3456,
          "deprecated": 3088
        },
        "average_confidence_score": 0.874
      },
      "domain_distribution": {
        "Condition": 89234,
        "Procedure": 45678,
        "Observation": 12456,
        "Measurement": 6789,
        "Device": 2632
      },
      "concept_class_distribution": {
        "Clinical Finding": 67890,
        "Procedure": 34567,
        "3-char billing code": 23456,
        "4-char billing code": 12345,
        "Observable Entity": 8765
      },
      "temporal_analysis": {
        "oldest_mapping_date": "2016-10-01T00:00:00Z",
        "newest_mapping_date": "2024-03-15T00:00:00Z",
        "mappings_by_year": {
          "2016": 98765,
          "2017": 12345,
          "2018": 8976,
          "2019": 15432,
          "2020": 7654
        },
        "recent_updates": 3456
      }
    },
    "mapping_gaps": {
      "source_gaps": {
        "total_unmapped_concepts": 152854,
        "unmapped_by_domain": {
          "Observation": 78432,
          "Measurement": 34567,
          "Condition": 23456,
          "Procedure": 16399
        },
        "unmapped_by_concept_class": {
          "Observable Entity": 56789,
          "Clinical Finding": 34567,
          "Procedure": 23456
        },
        "sample_unmapped_concepts": [
          {
            "concept_id": 4567890,
            "concept_name": "Blood pressure taking",
            "concept_code": "75367002",
            "domain_id": "Observation"
          }
        ],
        "gap_patterns": [
          "Many observational procedures lack ICD-10-CM equivalents",
          "Complex procedures often map to broader categories",
          "Specialized measurements have limited billing code coverage"
        ]
      },
      "recommendations": [
        "Consider using HCPCS for unmapped procedures",
        "Review observation domain mappings with clinical experts",
        "Implement custom mapping rules for specialized concepts"
      ]
    }
  },
  "meta": {
    "pagination": {
      "page": 1,
      "page_size": 1000,
      "total_items": 156789,
      "total_pages": 157,
      "has_next": true,
      "has_previous": false
    },
    "request_id": "req_vocab_mappings_789012",
    "timestamp": "2024-12-22T10:30:00Z",
    "vocab_release": "2025.2"
  }
}

Usage Examples

Basic Vocabulary Mappings

Get all mappings between two vocabularies:

const mappings = await fetch('/v1/mappings/vocabularies/SNOMED/ICD10CM');

High-Quality Condition Mappings

Get high-quality mappings for conditions:

const qualityMappings = await fetch('/v1/mappings/vocabularies/SNOMED/ICD10CM?domain_ids=Condition&quality_threshold=0.8&include_mapping_quality=true');

Comprehensive Mapping Analysis

Get detailed statistics and gap analysis:

const analysis = await fetch('/v1/mappings/vocabularies/SNOMED/ICD10CM?include_statistics=true&include_gaps=true&include_mapping_quality=true');

Drug Mappings

Get mappings between drug vocabularies:

const drugMappings = await fetch('/v1/mappings/vocabularies/RxNorm/NDC?domain_ids=Drug&equivalence_types=exact');

Standard Concept Mappings Only

Get mappings involving only standard concepts:

const standardMappings = await fetch('/v1/mappings/vocabularies/SNOMED/HCPCS?standard_concepts_only=both&domain_ids=Procedure');

Get Concept Mappings - Mappings for specific concepts
Get Mapping Coverage - Overall mapping coverage analysis
Get Vocabularies - Available vocabularies
Search Concepts - Find concepts across vocabularies

Notes

Large vocabulary pairs may return many thousands of mappings - use pagination appropriately
Coverage analysis helps identify gaps in cross-vocabulary translation capabilities
Quality scores help prioritize the most reliable mappings for production use
Gap analysis reveals unmapped concepts that may require custom mapping rules
Temporal analysis shows mapping evolution and maintenance patterns
Some vocabulary pairs have asymmetric coverage (better mapping in one direction)
Official mappings are generally more reliable than algorithmic or community mappings
Domain and concept class filtering can significantly improve query performance

Bulk Concept Mappings List Vocabularies

⌘I

API Reference

Concepts

Concept Hierarchy

Search

Search (Coming Soon)

Relationships

Domains & Classifications

Mappings

Vocabularies

Path Parameters

Query Parameters

Response

Usage Examples

Basic Vocabulary Mappings

High-Quality Condition Mappings

Comprehensive Mapping Analysis

Drug Mappings

Standard Concept Mappings Only

Notes

API Reference

Concepts

Concept Hierarchy

Search

Search (Coming Soon)

Relationships

Domains & Classifications

Mappings

Vocabularies

​Path Parameters

​Query Parameters

​Response

​Usage Examples

​Basic Vocabulary Mappings

​High-Quality Condition Mappings

​Comprehensive Mapping Analysis

​Drug Mappings

​Standard Concept Mappings Only

​Related Endpoints

​Notes

Path Parameters

Query Parameters

Response

Usage Examples

Basic Vocabulary Mappings

High-Quality Condition Mappings

Comprehensive Mapping Analysis

Drug Mappings

Standard Concept Mappings Only

Related Endpoints

Notes