This code system http://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp defines the following codes:
| Code | Display | Definition |
| claims-processing | Claim Processing | Request for data necessary from payers to support claims for services. |
| preauth-processing | Pre-authorization Processing | Request for data necessary from payers to support pre-authorization for services. |
| risk-adjustment | Risk Adjustment | Request for data from payers to calculate differences in beneficiary-level risk factors that can affect quality outcomes or medical costs, regardless of the care provided. |
| quality-metrics | Quality Metrics | Request for data used for aggregation, calculation and analysis, and ultimately reporting of quality measures. |
| referral | Referral | Request for additional clinical information from referring provider to support performing the requested service. |
| social-care | Social Care | Request for data from payers to support the non-medical social needs of individuals, especially the elderly, vulnerable or with special needs. |
| authorization-other | Other Authorization | Request for data from payers for other authorization request not otherwise specified. |
| care-coordination | Care Coordination | Request for data from payers to create a complete clinical record for each of their members to improve care coordination and provide optimum medical care. |
| documentation-general | General Documentation | Request for data used from payers or providers for general documentation. |
| orders | Orders | Request for additional clinical information from referring provider to support orders. |
| patient-status | Patient Status | Requests for patient health record information from payers to support their payer member records. |
| signature | Signature | Request for signatures from payers or providers on requested data. |
| care-planning | Care Planning | Request for data from payers or providers to determine how to deliver care for a particular patient, group or community. |
| social-risk | Social Risk | Request for data from payers or other providers to assess of social risk, establishing coded health concerns/problems, creating patient driven goals, managing interventions, and measuring outcomes. |
| operations-nos | Operations Not Otherwise Specified | [Healthcare Operations as defined by HIPAA](https://www.hhs.gov/hipaa/for-professionals/privacy/guidance/disclosures-treatment-payment-health-care-operations/index.html) and isn't defined further to ascertain a more detailed Purpose of Use concept. |
| payment-nos | Payment Not Otherwise Specified | [Healthcare Payment as defined by HIPAA](https://www.hhs.gov/hipaa/for-professionals/privacy/guidance/disclosures-treatment-payment-health-care-operations/index.html) and isn't defined further to ascertain a more detailed Purpose of Use concept. |
| purpose-of-use | Purpose Of Use | Purpose of use for the requested data. |
| signature-flag | Signature Flag | Flag to indicate whether the requested data requires a signature. |
| tracking-id | Tracking Id | A business identifier that ties requested attachments back to the claim or prior-authorization (referred to as the “re-association tracking control numbers”). |
| multiple-submits-flag | Multiple Submits Flag | Flag to indicate whether the requested data can be submitted in multiple transactions. If true the data can be submitted in separate transactions. if false *all* the data should be submitted in a single transaction. |
| payer-url | Payer URL | $submit-attachment operation endpoint where the requested data can be submitted |
| service-date | Service Date | Date of service or starting date of the service for the claim or prior authorization. |
| attachment-request | Attachment Request | A Task by a Payer requesting attachments for a claim or prior-authorization from the Provider. The Provider is expected to submit the attachments using the $submit-attachment operation to the endpoint provided in the "payer-url" input parameter. |
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