Allergy

Represents allergy, intolerance and adverse reactions recorded in source systems.

Table 1. Allergy

Database Field Name	Field Description	Sensitive Field	Identifiable Field	Field Type	Field Length	Optionality
category	Used to distinguish between drug and non-drug allergies	Yes	No	String	min n6 max n18	M
criticality	Criticality reaction	Yes	No	String	min n6 max n18	O
ctv3_code	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
deletion_flag	Flag specifying that the source record entry has been deleted and receiving systems should logically delete the corresponding record	Yes	No	Boolean	min an4 max an5	O
effective_date	The user modifiable most clinically significant date for the record entry	Yes	No	Timestamp	min an4 max an23	O
encounter_id	The encounter within which the source record entry was made or pertains to	Yes	No	String	an36	O
end_date	Provides any explicit end date associated with the source record entry	Yes	No	Timestamp	min an4 max an23	O
id	Persistent record identifier for resource	Yes	No	String	an36	M
other_code	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
other_code_system	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
other_display	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
other_expession	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
patient_id_deid	NHS number DE-IDENTIFIED	Yes	No	String	an200	O
practitioner_id	The clinical attribution of the record entry	Yes	No	String	an36	M
reaction_ctv3_code	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_other_code	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_other_code_system	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_other_display	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_other_expession	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_readv2_code	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_rubric	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_snomed_concept_id	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_snomed_description_id	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_snomed_expression	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
reaction_user_selected	The reaction associated with the allergy (See codeable concept)	Yes	No	See codable concept	See codable concept	See codable concept
readv2_code	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
recorded_date	The source system audit trail timestamp of when the source record was created, amended or deleted	Yes	No	Timestamp	min an4 max an23	M
registration_id	The unique supplier generated persistent technical key for the registration	Yes	No	String	an36	M
rubric	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
severity	Severity of reaction	Yes	No	String	min n6 max n18	O
snomed_concept_id	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
snomed_description_id	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
snomed_expression	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept
status	The status of the allergy or intolerance - used to distinguish between active or resolved allergies	Yes	No	String	min n6 max n18	M
template_id	Links the resource to a template header	Yes	No	String	an36	O
type	Used to distinguish between allergy and intolerance	Yes	No	String	min n6 max n18	O
user_selected	The allergy (See codable concept)	Yes	No	See codable concept	See codable concept	See codable concept