Double-Charge Detector 0542T

Myocardial imaging mcg i&r — 45 bundling rules

If your bill lists 0542T alongside any of these codes as separate charges, it may be an unbundling error.

By Priya Iyengar , Senior Billing Analyst · Published March 15, 2026 · Updated April 3, 2026

About the analyst

Priya Iyengar leads the billing code review team at BillRazor Research. She analyzes NCCI bundling edits, DRG coding, and regional rate variation. Expertise: NCCI bundling, DRG analysis, regional pricing.

NCCI edit data

45 code pairs

Updated 2026-04-03

Bundling rules — 0542T

NCCI edits: these codes have billing restrictions when billed with 0542T

Research suggests 49–80% of hospital bills contain errors. Our system checks every line item against Medicare benchmarks.

Common unbundling errors — Other procedures

Unbundling occurs when medical providers bill two separate codes for services that should be combined into a single charge according to National Correct Coding Initiative (NCCI) rules. In other procedures including anesthesia, radiology, pathology, and miscellaneous support services, common unbundling patterns include separately billing diagnostic imaging with its professional interpretation when both should be included in one comprehensive code, and charging for basic monitoring or preparation services alongside the primary procedure when these components are considered integral parts of the main service. Another frequent error involves billing multiple pathology examination codes for what constitutes a single comprehensive analysis. With 809 other codes subject to bundling restrictions in the NCCI database, these errors create charges above the benchmark for patients who receive multiple bills for what should constitute one complete service. The potential difference between unbundled billing and correct coding practices can significantly impact patient financial responsibility, as they may face duplicate charges for components of care that medical coding standards define as a single billable service.

What to check on your bill

When reviewing itemized bills for procedure bundling issues, patients should examine several key areas to identify potential billing irregularities. Look for multiple procedure codes billed on the same date that represent components of a comprehensive service, such as separate charges for incision, repair, and closure when these steps are typically included in one primary procedure code. Watch for code patterns where related procedures share the same first three digits, as these often indicate services that should be bundled together under Medicare's Correct Coding Initiative. Check for appropriate modifier usage, particularly modifier 59 or XS, which legitimately allow separate billing when procedures are performed on different anatomical sites or during distinct sessions. Without proper modifiers, separately billed related procedures may represent charges above the benchmark. Compare your itemized statement against standard bundling practices for your specific procedure type to identify potential differences in billing patterns.

All bundling rules for 0542T

45 code pairs that have billing restrictions with this procedure.

Never bill together

May bill with modifier

Code	Description	Rule
0694T	3d vol img&rcnstj brst/ax	May bill with modifier
0708T	Id ca immntx prep & 1st njx	May bill with modifier
0709T	Id ca immntx each addl njx	May bill with modifier
36000	Place needle in vein	May bill with modifier
36005	Injection ext venography	May bill with modifier
36410	Vnpnxr 3yr/> phy/qhp dx/ther	May bill with modifier
36591	Draw blood off venous device	Never bill together
36592	Collect blood from picc	Never bill together
76000	Fluoroscopy <1 hr phys/qhp	May bill with modifier
76376	3d render w/intrp postproces	May bill with modifier
76377	3d render w/intrp postproces	May bill with modifier
76942	Echo guide for biopsy	May bill with modifier
76998	Us guide intraop	May bill with modifier
77001	Fluoroguide for vein device	May bill with modifier
77002	Needle localization by xray	May bill with modifier
77790	Radiation handling	Never bill together
78445	Vascular flow imaging	Never bill together
78472	Gated heart planar single	Never bill together
78473	Gated heart multiple	Never bill together
78481	Heart first pass single	Never bill together
78483	Heart first pass multiple	Never bill together
78496	Heart first pass add-on	Never bill together
78580	Lung perfusion imaging	Never bill together
78582	Lung ventilat&perfus imaging	Never bill together
78597	Lung perfusion differential	Never bill together
78598	Lung perf&ventilat diferentl	Never bill together
78635	Csf ventriculography	Never bill together
96360	Hydration iv infusion init	May bill with modifier
96365	Ther/proph/diag iv inf init	May bill with modifier
96372	Ther/proph/diag inj sc/im	May bill with modifier
96374	Ther/proph/diag inj iv push	May bill with modifier
96375	Tx/pro/dx inj new drug addon	May bill with modifier
96376	Tx/pro/dx inj same drug adon	May bill with modifier
96377	Applicaton on-body injector	May bill with modifier
96523	Irrig drug delivery device	Never bill together
A9503	Tc99m medronate	Never bill together
A9512	Tc99m pertechnetate	Never bill together
A9537	Tc99m mebrofenin	Never bill together
A9539	Tc99m pentetate	Never bill together
A9540	Tc99m maa	Never bill together
A9552	F18 fdg	May bill with modifier
A9560	Tc99m labeled rbc	May bill with modifier
A9567	Technetium tc-99m aerosol	Never bill together
J1642	Inj heparin sodium per 10 u	May bill with modifier
J1644	Inj heparin sodium per 1000u	May bill with modifier

FAQ — Other procedure bundling

What is NCCI bundling and what does 'bundled' mean on a medical bill?

NCCI bundling refers to the National Correct Coding Initiative rules that prevent certain procedure codes from being billed separately when performed together. When codes are bundled, one procedure is considered inclusive of another, meaning only the primary procedure should be billed rather than charging for each component separately.

How can I identify if codes were incorrectly unbundled on my bill?

Incorrectly unbundled codes appear as separate line items on your bill when NCCI rules indicate they should be grouped together under one primary procedure code. This typically occurs with anesthesia, radiology, pathology, and miscellaneous support services that are considered integral to the main procedure being performed.

What should I do if I find unbundled charges on my medical bill?

Contact your healthcare provider's billing department to request a review of the charges and provide documentation showing the NCCI bundling rules that apply. Request an itemized explanation of why the codes were billed separately and ask for a corrected bill that reflects proper bundling if no valid modifier justification exists.

When is it legitimate to use modifiers to override NCCI bundling rules?

Modifiers are appropriately used when procedures are performed on different anatomical sites, during separate patient encounters, or when distinct procedural services are provided that don't fall under the bundling restrictions. The modifier usage must be supported by clear documentation in the medical record that demonstrates the services were truly separate and distinct from the bundled procedure.

Rates shown are from the 2026 Medicare Physician Fee Schedule and CMS IPPS. BillRazor compares your bill against these data sources. See how it works →

Data source: CMS National Correct Coding Initiative (NCCI) Procedure-to-Procedure (PTP) edits, updated quarterly. These code pairs are maintained by CMS to prevent improper billing of services that should be billed as a single procedure.

What this means: When two codes are listed as an NCCI edit pair, billing them separately on the same date of service is typically incorrect. "Never bill together" means no modifier can override the rule. "May bill with modifier" means the codes can be billed separately with appropriate documentation.