77063
RadiologyCMS status: AScreening digital breast tomosynthesis (DBT), bilateral, add-on code. CMS 2026 global wRVU 0.45, total RVU approximately 1.29, Medicare global allowable approximately $43. Reported in addition to 77067 (screening mammography bilateral) when 3D tomosynthesis is also performed.
Drop 77063 into a scenario to see how unit volume rolls up to annual wRVUs, gross collections, and bonus.
Open in calculator →When to use it
Use 77063 when bilateral screening DBT is performed alongside the standard 2D screening mammogram (77067). 77063 is an add-on code and is never billed alone. Diagnostic DBT add-on codes are 77061 (unilateral) and 77062 (bilateral) — those pair with 77065 or 77066 respectively. DBT improves cancer detection (especially in dense breasts) and reduces callback rates; most modern screening protocols include DBT routinely.
Documentation checklist
- ✓DBT acquisition documented (e.g., "tomosynthesis acquired in CC and MLO projections bilaterally").
- ✓Paired with primary 77067 screening code on the same date.
- ✓Interpretation includes the DBT findings, not just the 2D.
- ✓Setting modifier; signed report.
Common pitfalls
- !Billing 77063 alone, without 77067. As an add-on, 77063 cannot stand alone.
- !Billing 77063 with diagnostic mammography codes (77065 / 77066). The diagnostic add-ons are 77061 / 77062.
- !Stacking 77063 with 77061 or 77062 on the same date. Pick one based on whether the study is screening or diagnostic.
- !Missing the DBT add-on entirely when 3D was performed but only the 2D screening was billed. Significant under-coding given the widespread availability of DBT.
Payer notes
Medicare and most commercial payers cover 77063 when paired with screening 77067. ACA preventive screening cost-share waiver typically extends to DBT as part of routine screening. Some commercial plans still apply a small DBT-specific cost share; verify with the patient's benefit. The clinical case for DBT is stronger in women with dense breasts (BI-RADS density C or D).