Modified Barium Swallow CPT Code: Your 2026 Guide to Accurate Billing and Coding

Let’s take an example: a patient can’t eat. A physician orders a swallowing study. The radiologist and speech-language pathologist collaborate seamlessly in the fluoroscopy suite. Then the billing department submits the claim, and it gets denied.

For many U.S. healthcare providers, incorrect CPT code selection for the modified barium swallow study is one of the leading causes of claim rejection and lost revenue. This guide delivers the latest 2026 information straight from official U.S. sources so you can bill confidently and rank your claims for payment.  

What Is a Modified Barium Swallow Study?

A Modified Barium Swallow Study (MBS), also called a Videofluoroscopic Swallow Study (VFSS), is a specialized radiologic procedure used to evaluate dysphagia, or difficulty swallowing. It is fundamentally different from a standard barium swallow (esophagram), which only visualizes the esophagus under fluoroscopy.

How Does the Procedure Work?

During an MBS, the patient is asked to consume food and liquids coated with barium sulfate contrast material in various consistencies, such as thin liquid, nectar-thick, pudding-thick, and solid, while a fluoroscope captures real-time video. The study visualizes all three phases of swallowing:

• Oral phase: Preparation and transport of the bolus to the pharynx
• Pharyngeal phase: Triggering of the swallow reflex and airway protection
• Esophageal phase: Bolus transit through the esophagus into the stomach

The study is a collaborative effort. A Speech-Language Pathologist (SLP) conducts and interprets the functional swallowing assessment, while a Radiologist operates the fluoroscopic imaging equipment and provides the radiologic interpretation. Because two distinct professional services are rendered, two separate CPT codes apply.

MBS vs. Standard Barium Swallow: Key Differences

What Is the CPT Code for a Modified Barium Swallow Study?

The answer depends on who is performing the service. A modified barium swallow study involves two distinct provider roles, and the AMA assigns each a different CPT code.

Radiology Component: CPT 74230 

The primary modified barium swallow CPT code is 74230 for swallowing function, with cineradiography/videoradiography, including image interpretation and report. This code covers the radiologist’s or facility’s technical and professional services. Barium contrast is bundled and cannot be billed separately. 

Who Can Bill CPT 74230

Per CMS Local Coverage Article A56589, CPT codes 70370, 70371, and 74230 describe the complete radiologic procedure, and only one of these three codes should be billed per patient per date of service.

SLP Component: CPT 92611 

SLP 92611 bills motion fluoroscopic evaluation of swallowing function by cine or video recording. This code captures the SLP’s participation, analysis, and interpretation of swallowing physiology during the same study. 

Who Can Bill CPT 92611

Speech-Language Pathologists. This code applies to patients of all ages who present with dysphagia, including those with neurological impairments such as stroke, traumatic brain injury, ALS, Parkinson’s disease, or head and neck cancer sequelae. A separate clinical swallowing evaluation uses 92610 and is billable independently when performed on a different date or session. 

Do not report 74230 for SLP services.  

Since the 2020 NCCI edit, same-day billing of 74230 and 92611 requires attention to payer-specific rules and modifiers when performed by different providers. Check current NCCI edits before submission. 

Medicare Coverage for Modified Barium Swallow Studies

Medicare Part B covers the modified barium swallow study under CMS Local Coverage Determination L35433 (Barium Swallow Studies, Modified) and LCD L33449 (Swallowing Studies for Dysphagia). Coverage is considered medically necessary when the patient presents with documented dysphagia (ICD-10-CM R13.0, R13.10–R13.14, R13.19) linked to an underlying secondary diagnosis.

Per CMS Article A56589, secondary diagnoses are required when the primary diagnosis falls within the R13.x range include conditions such as:

• Stroke: Stroke sequelae (ICD-10 I69.x series with dysphagia)
• Aspiration Pneumonia: Aspiration pneumonia (J69.0)
• Neurological conditions: Parkinson’s disease, ALS, MS, TBI
• Head and neck cancers and post-surgical structural changes
• Certain trauma codes (T series) that do not require a secondary diagnosis

Important: ICD-10 codes I69.091, I69.191, I69.291, I69.391, I69.891, I69.991, J69.0, and certain T codes do not require a secondary diagnosis to establish medical necessity.

Medicare Part B Coverage for CPT 92611

Medicare Part B covers CPT 92611 when medically necessary. Medicaid coverage is state-dependent and may require prior authorization. Private insurers require individual verification before the procedure is scheduled. Providers should confirm payer-specific requirements, as policies can differ significantly from Medicare’s National Correct Coding Initiative (NCCI) edits.

Billing Rules

Can 92611 and 74230 Be Billed Together?

This question has a nuanced billing history. Effective January 1, 2020, CMS, through its NCCI contractor Capital Bridge, LLC, temporarily changed the modifier indicator for billing CPT 92611 and 74230 on the same date of service by the same provider. However, this edit was subsequently removed retroactively to December 31, 2019, per ASHA communications with CMS.

The key principle governing correct billing is provider identity — not the date of service:

• When the SLP and radiologist are different providers billing under different NPI numbers, both CPT 92611 and CPT 74230 can be submitted by each respective provider on their own CMS-1500 claim form.
• When the same provider attempts to bill both 92611 and 74230 on the same date for the same patient, NCCI edits apply.
• Modifier 59 may be applicable in specific circumstances. Always verify current NCCI edits before applying modifiers.

Same-Day Billing: 

According to ASHA’s published coding guidance, SLPs may bill CPT 92610 (clinical bedside swallowing evaluation) on the same date as CPT 92611, provided documentation supports that the two services were separate and distinct. Similarly, treatment code CPT 92526 (treatment of swallowing dysfunction) may be billed on the same day as an evaluation — but only when the evaluation and treatment session are clearly distinct, and the treatment addresses an established plan of care.

CPT 92611 may only be billed once per discipline, per date of service, per patient. Medicare’s Medically Unlikely Edits (MUEs) restrict this code from being reported more than once per day.

Conclusion

Accurate billing for a modified barium swallow study hinges on a few critical facts: 

• The correct CPT code for the SLP is 92611
• The correct CPT code for the radiologist is 74230
•  Each provider bills separately under their own NPI 
• Only one radiology code (70370, 70371, or 74230) may be billed per patient per day
• Medical necessity must be supported by linked ICD-10 diagnosis codes meeting CMS’s criteria. 

Understanding the distinct professional roles, following NCCI edit guidelines, and maintaining thorough documentation are the foundations of clean claims and maximized reimbursements for this procedure.

For expert medical billing services that specialize in radiology and SLP claims, contact NYC medical billing today. Our team guarantees accurate coding, faster reimbursements, and zero denials. Schedule your free audit now.

 Frequently Asked Questions

What is the CPT code for a modified barium swallow?

There are two CPT codes: 92611 for the Speech-Language Pathologist’s role and 74230 for the Radiologist’s role. Both are defined by the AMA and recognized by CMS for Medicare billing.

Can a modified barium swallow be billed as CPT 74220?

No. CPT 74220 is a standard esophagram without dynamic swallowing function evaluation. Using it for an MBS is incorrect. The appropriate code for the radiologic component of a modified barium swallow is CPT 74230.

Does Medicare pay for both 92611 and 74230?

Yes,  when billed by different providers (SLP and radiologist) under separate NPIs, Medicare can reimburse both codes. If the same provider bills both codes on the same claim, NCCI edits will apply.

Is a physician referral required for a modified barium swallow?

Yes. Medicare and most payers require a physician’s referral order and documented medical necessity before the MBS is performed and billed.