---
title: "Look up one symptom concept"
method: GET
path: "/v1/terminology/symptoms/{concept_id}"
tags: ["REST v1"]
---

# Look up one symptom concept

`GET /v1/terminology/symptoms/{concept_id}`

## Request

- Base URL: `https://platform.anpheros.com`
- URL: `https://platform.anpheros.com/v1/terminology/symptoms/{concept_id}`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-Api-Key`
  - OAuth 2 (authorization code, authorization URL `https://platform.anpheros.com/oauth/authorize`, token URL `https://platform.anpheros.com/oauth/token`; client credentials, token URL `https://platform.anpheros.com/oauth/token`, scopes: `patient/*.rs`, `patient/Observation.rs`, `patient/Observation.rs?category=laboratory`, `patient/Condition.rs`, `patient/MedicationStatement.rs`, `patient/DocumentReference.rs`, `patient/AllergyIntolerance.rs`, `offline_access`, `openid`, `fhirUser`, `anpheros/patterns`)

## Path parameters

- `concept_id` string, required

## Query parameters

- `lang` string

## Headers

- `authorization` string, nullable
- `X-Api-Key` string, nullable
- `X-Anpheros-Acting-As` string, nullable
- `X-Anpheros-On-Behalf-Of` string, nullable

## Response `200`

Successful Response

- SymptomConceptOut
  - `concept_id` string, required: Stable Anpheros identifier, never reused (SYM-0001…)
  - `system` string, required
  - `kind` string, required: symptom | finding
  - `status` string, required: active | deprecated
  - `display` string, required
  - `display_lang` string, required: Language of `display`; English when the requested language has no published label yet
  - `icd10` SymptomIcd10, required
    - `system` string, required
    - `code` string, required
    - `display` string, nullable: WHO ICD-10 Version 2019 title of the code
    - `equivalence` string, required: equivalent | broader (the ICD-10 code covers more than the concept)
  - `icd11` SymptomIcd11
    - `system` string, required
    - `code` string, required
    - `display` string, nullable: WHO ICD-11 MMS title of the code
    - `equivalence` string, required: equivalent | wider | narrower | inexact (seen from the ICD-11 code)
  - `body_system` SymptomBodySystem
    - `code` string, required: nervous, digestive, respiratory… — one per ICD-11 chapter 21 block
    - `display` string, required: WHO title of the ICD-11 block
    - `icd11_block` string, required
  - `labels` SymptomLabel[], required
    - `lang` string, required
    - `use` string, required: preferred | lay
    - `text` string, required
    - `review` string, required: source (official WHO title) | in_use (used by Anpheros Daily, not clinically reviewed) | ai_reviewed (machine translation reviewed with AI assistance against the WHO titles)
  - `match_terms` SymptomMatchTerm[], required
    - `lang` string, required
    - `text` string, required: Lower-case term without diacritics, as matched in free text
  - `warning_signs` SymptomWarningSign[]: Verbatim from an official public-domain source (review=source_verified) or clinician-reviewed, each with its source
    - `sign` string, required
    - `urgency` string, required: emergency | same_day | routine
    - `lang` string, required
    - `context` string, nullable: The source's own heading for the list the sign comes from, verbatim
    - `quote` string, nullable: The source's advice for these signs, verbatim
    - `applies_to` string, nullable: The group the source names (adults, infants and children…); empty = everyone
    - `source` SymptomSource, required
      - `publisher` string, nullable
      - `title` string, nullable
      - `url` string, nullable
      - `version` string, nullable
      - `retrieved_at` string, nullable
      - `licence` string, nullable
      - `attribution` string, nullable
    - `review` string: source_quoted (quoted word for word from the cited source; not reviewed by a clinician) | clinician
    - `reviewed_at` string, required
    - `note` string, required
  - `associations` SymptomAssociation[]: Only clinician-reviewed items, each with its source
    - `relation` string, required: Always may_be_associated_with: never a diagnosis
    - `condition` SymptomAssociationCondition, required
      - `system` string, required
      - `code` string, required
      - `display` string, nullable
    - `frequency` string, nullable
    - `source` SymptomSource, required
      - `publisher` string, nullable
      - `title` string, nullable
      - `url` string, nullable
      - `version` string, nullable
      - `retrieved_at` string, nullable
      - `licence` string, nullable
      - `attribution` string, nullable
    - `review` string: Always clinician: associations are served only after a clinician's review
    - `reviewed_at` string, required
    - `note` string, required
  - `clinical_review` boolean, required: False until a qualified clinician has reviewed this release
  - `release` string, required

## Other responses

- `401`: Missing, invalid, expired or revoked credential (`WWW-Authenticate: Bearer`).
- `403`: The credential's scope or the patient's consent does not allow this.
- `404`: Unknown concept id.
- `422`: Validation Error
- `429`: Rate limit exceeded; wait `Retry-After` seconds.

---

[API](https://skmtc.dev/anpheros/apis/anpheros-platform.md) · [All operations](https://skmtc.dev/anpheros/apis/anpheros-platform/llms.txt) · [OpenAPI document](https://skmtc.dev/anpheros/apis/anpheros-platform/revisions/ff567b232dc3?raw)