This code system http://terminology.hl7.org/CodeSystem/allergyintolerance-verification defines the following codes:
Lvl | Code | Display | Definition |
1 | unconfirmed | Unconfirmed | The propensity for a reaction to the identified substance has not been objectively verified. |
2 | presumed | Presumed | The available clinical information supports a high liklihood of the propensity for a reaction to the identified substance. |
1 | confirmed | Confirmed | The propensity for a reaction to the identified substance has been objectively verified (which may include clinical evidence by testing, rechallenge, or observation). |
1 | refuted | Refuted | A propensity for a reaction to the identified substance has been disputed or disproven with a sufficient level of clinical certainty to justify invalidating the assertion. This might or might not include testing or rechallenge. |
1 | entered-in-error | Entered in Error | The statement was entered in error and is not valid. |