This is the CodeSystem that contains all the codes in ReferralMethod (http://terminology.hl7.org/CodeSystem/service-referral-method) and ReferralMethod (http://terminology.hl7.org/CodeSystem/service-referral-method). E.g. what you have to deal with if you get resources containing codes in either of them
This code system http://hl7.org/fhir/comparison/CodeSystem/0229f20e-bdf6-4558-8625-5d09cf27fb48-1556 defines codes, but no codes are represented here
| Code | Display | Definition |
| fax | Fax | Referrals may be accepted by fax. |
| phone | Phone | Referrals may be accepted over the phone. |
| elec | Secure Messaging | Referrals may be accepted via a secure messaging system. To determine the types of secure messaging systems supported, refer to the identifiers collection. Callers will need to understand the specific identifier system used to know that they are able to transmit messages. |
| semail | Secure Email | Referrals may be accepted via a secure email. To send please encrypt with the services public key. |
| mail | Mail | Referrals may be accepted via regular postage (or hand delivered). |
| self | Self-referral | Referrals may be accepted via self-referral. |