.spoke-cta{margin:24px 0}a.btn-join{display:inline-block;background:#2b6cb0;color:#fff!important;padding:12px 20px;border-radius:8px;font-weight:600;text-decoration:none;line-height:1.4}.spoke-q>li{margin:0 0 22px}.spoke-q ul{margin:6px 0 6px 18px}.spoke-table{border-collapse:collapse;width:100%;margin:18px 0}.spoke-table th,.spoke-table td{border:1px solid #d6dee8;padding:8px 12px;text-align:left;vertical-align:top}.spoke-table thead th{background:#f0f5fa}.spoke-sources{margin-top:32px;padding-top:16px;border-top:1px solid #e2e8f0;font-size:.92em;color:#4a5568}.spoke-sources a{word-break:break-word}
Both are ONCC credentials, but they cover different scopes. The short version:
OCN certifies general adult oncology nursing, while CBCN certifies breast-care nursing
specifically.
OCN vs CBCN at a glance
| OCN | CBCN | |
|---|---|---|
| Scope | General adult oncology | Breast care nursing |
| Awarding body | ONCC | ONCC |
| Best for | Nurses across oncology settings | Nurses focused on breast cancer care |
| Valid for | 4 years | 4 years |
Which one should you choose?
- Choose OCN if you work across oncology — medical, surgical, radiation,
or mixed caseloads. It’s the broad, widely recognized oncology credential. - Choose CBCN if your practice centers on breast cancer — screening,
diagnosis, treatment, and survivorship — and you want a credential that reflects that focus. - Some nurses earn OCN first as their general oncology credential, then add a
subspecialty like CBCN as their practice narrows.
Either way, the preparation is the same: broad, timed, scenario-based practice with rationales.
Unlock 3,000+ OCN practice questions across 15 full-length simulators — $19.99 lifetime →
Sources & references
The exam facts on this page are drawn from official certifying-body materials, reviewed 2026-06-18 by the DrCertifications exam-prep team (10+ years in exam preparation and publishing).