| Code | Description | Comment | Version |
| C | Signed CMS-1500 claim form on file, e.g. authorization for release of any medical or other information necessary to process this claim and assignment of benefits. | | added v2.5 |
| M | Signed authorization for assignment of benefits on file. | | added v2.5 |
| P | Signature generated by provider because the patient was not physically present for services. | | added v2.5 |
| S | Signed authorization for release of any medical or other information necessary to process this claim on file. | | added v2.5 |