Double-Charge Detector 0579T

Rem interrog dev icds tech — 58 bundling rules

If your bill lists 0579T alongside any of these codes as separate charges, it may be an unbundling error.

By Kevin Nyk , Medical Billing Analyst · Published March 15, 2026 · Updated April 3, 2026

About the analyst

Kevin Nyk analyzes hospital pricing data at BillRazor Research. He specializes in Medicare reimbursement patterns and chargemaster pricing across U.S. hospitals. Expertise: hospital pricing, Medicare rates, chargemaster analysis.

NCCI edit data

58 code pairs

Updated 2026-04-03

Bundling rules — 0579T

NCCI edits: these codes have billing restrictions when billed with 0579T

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 0579T

58 code pairs that have billing restrictions with this procedure.

Never bill together

May bill with modifier

Code	Description	Rule
0576T	Interrog dev eval icds ss ip	Never bill together
0733T	Rem r-t mtn nrehab ther sply	Never bill together
0734T	Rem r-t mtn nrehab tx mgmt	Never bill together
0903T	Ecg alg 12 lead reduced i&r	May bill with modifier
0904T	Ecg alg 12 ld rdcd trcg only	May bill with modifier
0905T	Ecg alg 12 ld rdcd i&r only	May bill with modifier
0921T	Rmvl perm ccm-d sys 1 dfb ld	Never bill together
33202	Insert epicard eltrd open	Never bill together
33203	Insert epicard eltrd endo	Never bill together
33236	Remove electrode/thoracotomy	Never bill together
33237	Remove electrode/thoracotomy	Never bill together
33238	Remove electrode/thoracotomy	Never bill together
33243	Remove eltrd/thoracotomy	Never bill together
33250	Ablate heart dysrhythm focus	Never bill together
33251	Ablate heart dysrhythm focus	Never bill together
33254	Ablate atria lmtd	Never bill together
33255	Ablate atria w/o bypass ext	Never bill together
33256	Ablate atria w/bypass exten	Never bill together
33257	Ablate atria lmtd add-on	Never bill together
33258	Ablate atria x10sv add-on	Never bill together
33259	Ablate atria w/bypass add-on	Never bill together
33261	Ablate heart dysrhythm focus	Never bill together
33265	Ablate atria lmtd endo	Never bill together
33266	Ablate atria x10sv endo	Never bill together
36591	Draw blood off venous device	Never bill together
36592	Collect blood from picc	Never bill together
93000	Electrocardiogram complete	May bill with modifier
93005	Electrocardiogram tracing	May bill with modifier
93010	Electrocardiogram report	May bill with modifier
93040	Rhythm ecg with report	May bill with modifier
93041	Rhythm ecg tracing	May bill with modifier
93042	Rhythm ecg report	May bill with modifier
93224	Xtrnl ecg rec up to 48 hrs	May bill with modifier
93225	Xtrnl ecg rec<48 hrs rec	May bill with modifier
93226	Xtrnl ecg rec<48 hr scan a/r	May bill with modifier
93227	Xtrnl ecg rec<48 hr r&i	May bill with modifier
93228	Remote 30 day ecg rev/report	May bill with modifier
93229	Remote 30 day ecg tech supp	May bill with modifier
93241	Xtrnl ecg rec>48hr<7d	May bill with modifier
93242	Ext ecg>48hr<7d recording	May bill with modifier
93243	Ext ecg>48hr<7d scan a/r	May bill with modifier
93244	Ext ecg>48hr<7d rev&interpj	May bill with modifier
93245	Ext ecg>7d<15d rec scan a/r	May bill with modifier
93246	Ext ecg>7d<15d recording	May bill with modifier
93247	Ext ecg>7d<15d scan a/r	May bill with modifier
93248	Ext ecg>7d<15d rev&interpj	May bill with modifier
93640	Ep eval 1/2chmbr pacg cvdfb	Never bill together
93641	Ep evl 1/2chmb pac cvdfb tst	Never bill together
96523	Irrig drug delivery device	Never bill together
98975	Rem ther mntr 1st set-up&edu	Never bill together

Showing 50 of 58 rules. Show all

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.