CPT code 74182 – MRI abdomen with contrast

Key Takeaways

74182 covers MRI abdomen with contrast only; it does not include a pre-contrast sequence, which is covered by 74183

Modifier TC reports the technical component (facility); modifier 26 reports the physician interpretation; no modifier = global billing

Billing 74182 and 74183 on the same date of service for the same patient triggers an NCCI edit; 74183 supersedes when both phases are performed

Pabau’s claims management software flags code-pair NCCI edits and missing prior authorization before submission

CPT code 74182: official descriptor and procedure overview

CPT code 74182 describes “Magnetic resonance imaging, abdomen; with contrast material(s)” as defined by the AMA’s CPT code set. The code applies when a radiologist performs MRI imaging of the abdominal region using intravenous gadolinium-based contrast agent (GBCA), and the exam consists of post-contrast sequences only.

The anatomic scope of “abdomen” under 74182 covers the region from the diaphragm to the iliac crests. Organs typically visualized include the liver, pancreas, spleen, kidneys, adrenal glands, and abdominal aorta. Pelvic structures are excluded; if the exam extends into the pelvis, a separate pelvic MRI code applies.

What the procedure includes

• Intravenous gadolinium administration and monitoring
• Post-contrast MRI sequences (arterial, portal venous, delayed phases where ordered)
• Image acquisition, processing, and storage
• Radiologist supervision and attestation

What the procedure excludes

• Pre-contrast (non-contrast) sequences – those qualify for 74183 when combined
• Pelvic MRI sequences (see CPT 72197 for MRI pelvis with contrast)
• 3D rendering – reported separately with add-on codes 76376 or 76377
• A second contrast administration or second contrast phase

74182 vs 74181 vs 74183: choosing the right abdominal MRI code

The three abdominal MRI codes in this family differ only by contrast protocol. Selecting the wrong one is the most common coding error in this group, and payers catch it during claim review.

Common mix-up: A technologist performs both pre- and post-contrast sequences, but the coder bills 74182 based on the order sheet mentioning “with contrast.” If both phases were acquired, 74183 is the correct code. The operative question is what sequences were actually performed and documented, not merely what was ordered.

Documentation requirements for CPT code 74182 claims

A 74182 claim requires documentation at three points: the ordering record, the radiology report, and the billing record. Missing any one of them is enough to trigger a medical necessity denial. The medical billing documentation standards for imaging codes are strict because payers treat abdominal MRI as a high-utilization service.

Ordering record

• Signed order from the treating physician specifying “MRI abdomen with contrast”
• Clinical indication (e.g., suspected hepatic lesion, pancreatic mass, renal pathology)
• Patient name, date of birth, and date of service

Radiology report

• Documented administration of gadolinium-based contrast agent, including dose and route
• Sequences performed listed explicitly (e.g., T1 post-contrast arterial phase, portal venous phase)
• Interpreting radiologist’s attestation with date and time
• Clinical findings tied back to the ordering indication

Billing record

• Correct CPT code (74182) with appropriate modifier (TC, 26, or none)
• Supporting ICD-10-CM diagnosis code reflecting the clinical indication
• Place of service code matching where the scan was performed

ICD-10 codes that support medical necessity for CPT 74182

Payers cross-reference the diagnosis code on the claim against their Local Coverage Determination (LCD) or National Coverage Determination (NCD) for abdominal MRI. The ICD-10-CM codes below are among those most commonly accepted, but coverage policies vary by Medicare Administrative Contractor (MAC) region. Always verify against the applicable LCD before billing. For practices managing reproductive procedure billing codes alongside radiology, abdominal MRI indications often overlap with pelvic pathology.

Using an unspecified code like R10.9 may trigger additional documentation requests from payers. Where a more specific diagnosis is established, use the more specific ICD-10-CM code to reduce prior authorization friction and denial risk.

Billing CPT 74182: technical component, professional component, and global billing

How 74182 is billed depends on who owns the equipment and who reads the images. Getting this wrong produces the wrong payment and often a recoupment demand. Before sending the claim, confirm superbill generation correctly reflects the billing entity. Submitting a clean claim from the start is far faster than filing a corrected claim after a modifier error.

74182 carries a -day global period. There is no postoperative period to manage, which simplifies the billing cycle compared with surgical codes.

Medicare reimbursement rates for CPT code 74182

Medicare reimburses 74182 through the Medicare Physician Fee Schedule (MPFS). Rates vary by geographic locality and are updated each calendar year. The CMS fee schedule lookup tool provides current locality-specific rates for each modifier scenario. The figures below are approximate national non-facility rates for reference only; verify current-year values before billing. Submit claims electronically via Claim.MD clearinghouse integration to access real-time eligibility checks and ERA posting against these rates.

Rates in Alaska, California, New York metro, and other high-cost localities run meaningfully higher than the national averages above. Always pull locality-adjusted figures from the CMS MPFS lookup before setting fee schedules or projecting collections.

Prior authorization requirements for CPT 74182

Prior authorization for abdominal MRI is required by many commercial payers and, since 2023, by Medicare for certain hospital outpatient department (HOPD) settings under CMS’s prior authorization program for advanced diagnostic imaging. Staying current on medical billing compliance requirements is essential because the program’s scope and site-of-service applicability can change with annual rulemaking.

Medicare prior authorization program

CMS implemented prior authorization for certain hospital outpatient services under Section 515 of the Consolidated Appropriations Act. MRI services, including abdominal MRI billed as 74182, may require PA when performed in a Medicare-enrolled HOPD. Physician office and independent imaging center settings have different requirements. Confirm the applicable site-of-service rules with your MAC before assuming PA is or is not required.

Commercial payer prior authorization

• Most major commercial payers (UnitedHealth, Aetna, Cigna, Humana) require PA for abdominal MRI
• Radiology benefit managers (RBMs) such as eviCore or Carelon manage imaging PA for many payers
• Clinical information typically required: ordering diagnosis, prior imaging results, clinical notes, and why lower-cost imaging (ultrasound, CT) is insufficient
• PA denials are appealable; document medical necessity thoroughly before the initial submission

Add-on codes and modifiers used with CPT 74182

Several add-on codes and modifiers appear alongside 74182 in radiology billing. Understanding when each is appropriate, and when it triggers an edit, prevents the most common modifier-related denials. For comparison, other CPT procedure code families follow similar add-on pairing logic.

Laterality modifiers (-LT, -RT) do not apply to abdominal MRI. The abdomen is a midline structure billed as a single service regardless of which side of the abdomen is the focus of clinical interest.

Can 74182 and 74183 be billed together on the same date of service?

No. Billing CPT 74182 and CPT 74183 together for the same patient on the same date of service triggers an NCCI (National Correct Coding Initiative) column edit. Under NCCI bundling logic, 74182 is a component of 74183; when both pre- and post-contrast sequences are performed, 74183 is the correct and complete code. Reporting 74182 alongside 74183 on the same claim causes the 74182 line to deny automatically.

The key question before coding is: what was actually acquired? If the technologist ran both a non-contrast series and a post-contrast series, the correct code is 74183, regardless of what appears on the original order. Document the sequences performed in the radiology report, not just the ordered protocol.

Top reasons CPT 74182 claims are denied and how to resolve them

Most 74182 denial patterns repeat across payers. Each one has a specific resolution path. Reviewing your electronic remittance advice for the CARC code on the denied line tells you which bucket the denial falls into. Systematic denial management workflows that route each CARC to the right resolution step recover revenue that would otherwise age out.

Reference your remittance advice denial codes guide to match each CARC to the correct appeal pathway. A denial that goes unworked for 90 days typically becomes unappealable under most payer contracts.

Cut 74182 denial rates with smarter billing workflows

Pabau’s claims management software checks code-pair NCCI edits, flags missing prior authorization, and validates ICD-10 pairings before your team submits a single claim. See how radiology-adjacent practices use Pabau to reduce denials and speed up collections.

Book a demo

How radiology billing software reduces CPT 74182 claim errors

Manual coding workflows catch roughly 60-70% of preventable errors before submission, according to industry billing benchmarks. The gap gets covered by claim scrubbers and billing software that runs edits automatically. For practices managing imaging codes alongside other specialties, claims management software handles several of the most common 74182 failure points before claims reach the clearinghouse.

NCCI edit checking

A billing platform that maintains current NCCI edit tables flags the 74182/74183 code-pair conflict at the entry point. The coder sees the edit before the claim is batched, not after a denial arrives 30 days later.

Prior authorization tracking

When a PA number is required, the system attaches it to the claim automatically and alerts staff when a scan is scheduled without a corresponding authorization on file. That single workflow check prevents the most expensive denial category for abdominal MRI.

ICD-10 pairing validation

Payers maintain crosswalk tables of acceptable diagnosis codes for each imaging CPT. Billing software can enforce those crosswalks at charge entry, so an unspecified code that is not covered under the applicable LCD gets flagged for review rather than going out on the claim.

Practices that bill CPT-coded procedures across multiple specialties alongside imaging codes benefit from centralized claim tracking. Electronic remittance posting through a clearinghouse partner ensures ERAs are matched to claims automatically, making denial patterns visible across the full code set. See how Pabau integrates with billing workflows for other CPT code reference pages in the same format.

Conclusion

The most expensive mistake on CPT code 74182 is also the simplest to prevent: confirming whether pre-contrast sequences were acquired before deciding between 74182 and 74183. That one check eliminates NCCI bundling denials and wrong-code corrections in one step.

Pabau’s claims management software runs NCCI edit checks, validates ICD-10 pairings against payer LCDs, and flags missing prior authorization before any claim leaves the practice. If your team is spending time working 74182 denials that should never have gone out, book a demo to see how the workflow looks in practice.

Continue your research

Need to understand how clearinghouse submissions work? Claim.MD clearinghouse overview explains how electronic claims route from your billing software to payers and back.

Working through a denial on a related imaging code? Revenue cycle management fundamentals covers the end-to-end process from charge entry to payment posting.

Want to benchmark your billing performance? Best medical billing software compares the tools practices use to track denial rates, clean-claim ratios, and days in A/R.

Frequently Asked Questions