| Code | Display | Definition | 
| noneneeded | None needed | No validation needed/planned for this resource or element. | 
| initial | Initial | Validation is only needed after initial attestation. For elements that typically do not change such as 'medical school attended and graduation date'. | 
| periodic | Periodic | Validation is needed after initial attestation and on a periodic basis. E.g. elements that expire or may change such as licensure. | 
| attested | Attested | Indicates the element or resource has only been attested. | 
| validated | Validated | Indicates the element or resource has been successfully validated. | 
| inprocess | Inprocess | Indicates the element or resource is currently being validated. | 
| reqreval | Required revalidation | Indicates the element or resource has passed an expiration date and requires revalidation. | 
| valfailed | Valiation failed | Indicates validation was attepted on an element or resource and that validation failed. | 
| nothing | Nothing | No external validation is required. | 
| single | Single | Indicates the element or resource is validated against a single source. | 
| multiple | Multiple | Indicates the element or resource may require validation against multiple sources, e.g. a practitioner participating in an insurance network. | 
| editcheck | Edit check | Indicates the element or resource is validated for format, range, presence, or other similar properties. | 
| valueset | Valueset | Indicates the element or resource is validated against a value set. | 
| extsource | External source | Indicates the element or resource is validated against an external source. | 
| standalone | Stand alone | Indicates the element or resource is validated by itself and is unrelated to other elements or resources. | 
| incontext | In context | Indicates the element or resource is validated by the existence or value of another related element or resource. | 
| fatal | Fatal | A failure that is likely relevant to local workflow environments, considered sufficient to suspend the resource/element and one or more action has been taken. | 
| warning | Warning | A failure that  may be relevant to some local workflow environments, but in and of itself is not consider sufficient to suspend the resource/element. E.g. validating membership in an organization. | 
| recordonly | Record only | A failure that may be relevant to some local workflow environments and will be documented but not result in notification or publication of the error. | 
| noaction | No action | A failure that is unlikely to be relevant to any local workflow environment. | 
| manual | Manual | The resource or element is validated manually. | 
| portal | Portal | The resource or element is validated via a portal into a source of valid data. | 
| push | Push | Data is sent (i.e. pushed) from a source of valid data to the Healthcare Directory | 
| pull | Pull | Data is retrieved (i.e. pulled) from a source of valid data into the Healthcare Directory | 
| successful | Successful | The validation process is complete and a determination made that the the attested data is true and accurate. | 
| failed | Failed | The validation process is complete and a determination made that the the attested data is not true or accurate. | 
| undetermined | Undetermined | The validation process is complete and a determination could not be made that the the attested data is, or is not, true and accurate. | 
| pushyes | Yes | The primary source validation can be achieved via a push of data from the source of that information. | 
| pushno | No | The primary source validation cannot be achieved via a push of data from the source of that information. | 
| pushundetermined | Undetermined | It is if undetermined if primary source validation can be achieved via a push of data from the source of that information. | 
| specific | Specific requested changes | The sender will send specific changes to the healthcare directory as determined by agreement. | 
| any | Any changes | The sender will send all changes to the healthcare directory. | 
| sourcedef | As defined by the source/sender | The sender will only send changes they have determined to be significant. | 
| owner | Owner | Indicates the element or resource was attested to by the individual who owned the data. | 
| authrep | Authorized representative | Indicates the element or resource was attested to by an individual who was designated to attest by the owner of the data. | 
| authint | Authorized intermediary | Indicates the element or resource was attested to by a system (intermediary) that was designated to attest by the owner of the data. | 
| non-auth-src | Non-authorized source | Indicates the element or resource was attested to by an individual or system that was not designated to attest by the owner of the data. | 
| licenseboard | License Board | License Board | 
| primaryed | Primary Education | Primary Education | 
| continuinged | Continuing Education | Continuing Education | 
| postalservice | Postal Service | Postal Service | 
| relowner | Relationship owner | Relationship owner | 
| regauth | Registration Authority | Registration Authority | 
| legalsource | Legal source | Legal source | 
| issuingsource | Issuing source | Issuing source | 
| attester | Attester | Attester |