| Field code | D_NMBR_MARR |
| Field description | Number of marrow donations |
| Field type | Numeric Length: 1 |
| Field rule | |
| Dictionary field | Number of previous HPC donations (Number of times a donor has previously donated either HPC(A) or HPC(M)) |
| EMDIS messages |
ALM_RES DONOR_CB |
| WMDA XML fields related to dictionary field |
NMBR_MARR NMBR_PBSC |