CPT 77293Radiology

Respirator motion mgmt simul

CPT code 77293 covers the sophisticated imaging and planning work needed when doctors must account for breathing motion during radiation treatment simulation, ensuring the radiation beam follows the tumor as it moves with each breath.

Showing rates for

National Average

Base Medicare rate

$390.75

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

PE RVU (NF)

9.98

MP RVU

0.1

Total RVU

12.08

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Always verify that 4D-CT or other motion management technology was actually utilized and documented, not just standard 3D simulation
Impact: Prevents $390.75 denial and potential fraud allegations; this code requires specific motion tracking technology
Bill 77293 only once per simulation session regardless of how many motion management techniques are employed
Impact: Prevents duplicate billing denials; multiple techniques (gating + 4D-CT) are included in the single code
Document the specific respiratory motion management technique used (4D-CT, respiratory gating, breath-hold, compression) in the simulation report
Impact: Reduces denial rate by 40-60%; payers frequently audit this code for medical necessity
Do not bill 77293 with basic CT simulation (77295) for the same treatment plan; 77293 is the higher-level code that includes CT simulation elements
Impact: Avoids bundling denials and potential takebacks of $390.75 payment
Ensure separate billing from treatment planning codes (77295, 77300, 77301) which are distinct services performed after simulation
Impact: Maximizes appropriate reimbursement; these services can be billed together when properly documented
For Medicare patients, confirm LCD/NCD coverage for the specific cancer site and respiratory motion management indication
Impact: Prevents denials on coverage grounds; some MACs have specific requirements for when motion management is considered medically necessary

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Frequently asked questions

What is the Medicare reimbursement rate for CPT code 77293 in 2025?

The 2025 Medicare national average reimbursement rate for CPT 77293 is $390.75 for both facility and non-facility settings, based on 12.08 total RVUs and the 2025 conversion factor of 32.3465.

Can CPT 77293 and 77295 be billed together for the same patient?

No, CPT 77293 (respiratory motion management simulation) should not be billed with 77295 (basic 3D CT simulation) for the same treatment planning session. Code 77293 is the more comprehensive code that includes CT simulation elements when motion management is performed.

What documentation is required to bill CPT 77293?

Required documentation includes the specific motion management technique used (4D-CT, gating, breath-hold), tumor motion measurements, respiratory phase data, physician supervision, and clinical justification for why motion management was medically necessary for the patient's specific tumor location and treatment plan.

How many RVUs is CPT code 77293 worth in 2025?

CPT 77293 has a total of 12.08 RVUs in 2025, consisting of 2.00 work RVUs, 9.98 practice expense RVUs, and 0.10 malpractice RVUs for both facility and non-facility settings.

What is the difference between CPT 77293 and basic radiation simulation?

CPT 77293 specifically covers respiratory motion management simulation using advanced techniques like 4D-CT or gating systems to track tumor movement with breathing, whereas basic simulation codes (77280, 77285, 77295) cover standard treatment planning without motion tracking technology.

Which medical specialties typically bill CPT code 77293?

CPT 77293 is primarily billed by radiation oncologists, medical physicists working in radiation oncology departments, and therapeutic radiology specialists in hospital-based cancer centers and freestanding radiation therapy facilities equipped with 4D-CT or respiratory gating technology.

Is CPT 77293 billable more than once per patient?

CPT 77293 is typically billed once per radiation treatment course during the initial simulation. Repeat billing requires clear documentation of medical necessity, such as significant tumor changes, anatomical changes, treatment plan revision, or initial simulation failure, and may require modifier 76 or 77.