| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 1,791 | 2 | NAACCR | 2006 | 11 |
This field is created by the central registry. It records the source from which the consolidated information was obtained on a patient's vital status and date of last contact. Follow-up Source Central would be updated when new or more reliable information becomes available. However, when the existing date of last contact/vital status is deemed to be more reliable than newly obtained information, then neither the date of last contact/vital status nor the follow-up source central would be changed.
For central registries performing follow-up, this field could help evaluate the success rates of various methods of follow-up. When new follow-up information conflicts with the existing information, knowing the follow-up source can help resolve any discrepancies.
Codes
| 00 | Follow-up not performed for this patient |
| (01-29) | File Linkages |
| 01 | Medicare/Medicaid File |
| 02 | Center for Medicare and Medicaid Services (CMS, formerly HCFA) |
| 03 | Department of Motor Vehicle Registration |
| 04 | National Death Index (NDI) |
| 05 | State Death Tape/Death Certificate File |
| 06 | County/Municipality Death Tape/ Death Certificate File |
| 07 | Social Security Administration Death Master File |
| 08 | Hospital Discharge Data |
| 09 | Health Maintenance Organization (HMO) file |
| 10 | Social Security Epidemiological Vital Status Data |
| 11 | Voter Registration File |
| 12 | Research/Study Related Linkage |
| 29 | Linkages, NOS |
| (30-39) | Hospitals and Treatment Facilities |
| 30 | Hospital in-patient/outpatient |
| 31 | Casefinding |
| 32 | Hospital cancer registry |
| 33 | Radiation treatment center |
| 34 | Oncology clinic |
| 35 | Ambulatory surgical center |
| 39 | Clinic/facility, NOS |
| (40-49) | Physicians |
| 40 | Attending physician |
| 41 | Medical oncologist |
| 42 | Radiation oncologist |
| 43 | Surgeon |
| 48 | Other specialist |
| 49 | Physician, NOS |
| (50-59) | Patient |
| 50 | Patient contact |
| 51 | Relative contact |
| 59 | Patient, NOS |
| (60-98) | Other |
| 60 | Central or Regional cancer registry |
| 61 | Internet sources |
| 62 | Hospice |
| 63 | Nursing homes |
| 64 | Obituary |
| 65 | Other research/study related sources |
| 98 | Other, NOS |
| 99 | Unknown source |