CPT code 73120 – Hand x-ray, 2 views

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Key takeaways

CPT code 73120 covers a hand x-ray with exactly two views, and 73130 takes over at three or more.

Modifier 26 covers the interpretation and Modifier TC covers the equipment, so hospital and teleradiology claims split into two lines.

Traditional Medicare rarely asks for prior authorization on a plain-film hand x-ray, but Medicare Advantage plans set their own rules.

A claim needs an ICD-10 diagnosis coded to full specificity, including laterality and the encounter character where the code requires one.

Practice management software like Pabau checks the view count and the diagnosis before a 73120 claim leaves the practice.

What CPT code 73120 covers

CPT code 73120 is the American Medical Association code for “Radiologic examination, hand; 2 views.” It covers plain-film imaging of the metacarpals, the phalanges, and the joints between them, when two projections are captured and interpreted.

The code sits in the diagnostic radiology section of the CPT code set, among the imaging codes for the upper extremity.

The two standard projections are posteroanterior (PA) and lateral. An oblique view can stand in for one of them, depending on the clinical question. What matters for billing is that the count is exactly two. Fewer projections cannot support 73120, and a third one moves the claim to 73130.

What the code includes and what belongs elsewhere

CPT code 73120 covers the hand from the base of the metacarpals through the fingertips, with at least two views documented. A few clinical situations push the claim to a neighboring code instead.

What 73120 includes:

• Imaging of all five metacarpals and the phalanges as a unit
• A minimum of two projections, whether PA, lateral, or oblique
• Radiologist interpretation and the written report, when the claim is billed globally
• Each hand of a bilateral order, reported separately with its own 73120 and laterality modifier

What belongs to another code:

• Fingers imaged on their own, with two or more views: CPT 73140
• Wrist imaging: CPT 73100 for two views, CPT 73110 for three or more
• Forearm imaging: CPT 73090
• A hand study with three or more views: CPT 73130

The exclusion that trips coders up most often turns on the field of view. If the order names the fingers only, and the technologist images one digit or several without the metacarpals, the code is 73140.

If the exam captures the whole hand, 73120 applies even when the clinical concern is a single finger. The hand was imaged as a unit, and that is what the code reports.

73120 vs 73130: Choosing by view count

View count alone separates the two codes. Two views means 73120, and three or more means 73130. No other clinical factor changes the selection.

73120 and 73130 are mutually exclusive for the same hand on the same date of service. Billing both creates a duplicate-procedure edit, which ends in denial or recoupment. Check the technologist’s view count in the radiology report before you pick the code. The physician order often says “hand x-ray” with no count attached, but the billed code has to match what was performed.

Adjacent hand and wrist radiology codes

Billers in orthopedics and urgent care work inside a tight group of upper-extremity radiology codes. Two facts settle the choice every time. The first is what the image includes, and the second is how many views the report documents. The grid below maps both onto a code.

The full descriptor for each code, with the anatomy it covers, is set out below.

A quick rule of thumb keeps most claims straight. If the metacarpals are in the field and two projections were captured, start at 73120. Then ask whether a third view was taken, which moves the claim to 73130. If the study was wrist-focused instead, 73100 or 73110 applies.

Modifiers 26, TC, and laterality

Three billing scenarios apply to CPT code 73120, and equipment ownership decides which one. The wrong modifier, or a missing one where the billing splits, is among the top denial drivers for radiology claims.

When a radiologist reads a film taken at a hospital outpatient department, the radiologist bills 73120-26 and the hospital bills 73120-TC. Together the two components equal the global payment. Billing globally in a hospital setting, where the physician does not own the equipment, creates a split-billing conflict that payers deny.

Medicare reimbursement and fee schedule

Medicare pays CPT code 73120 through the Medicare Physician Fee Schedule (MPFS), which CMS updates each year. Rates vary by component and by place of service. Check the current figure in the CMS MPFS lookup tool before you quote a number to anyone.

The amounts below are typical 2026 national rates, unadjusted for the Geographic Practice Cost Index (GPCI) in your locality.

RVU values for 73120 sit low because a plain-film hand study is quick to acquire and quick to read. The work RVU of 0.17 reflects the time it takes to interpret two projections. Locality adjustment then moves the allowable amount either side of the national figure.

Commercial payer rates vary widely from Medicare allowables. Some plans pay above MPFS, and others set their own schedule as a percentage of Medicare. Never present a Medicare rate to a commercial payer as a negotiated figure.

Submit the claim electronically in X12 837P format, as HIPAA transaction standards require. The 835 electronic remittance advice that comes back shows the allowed amount, any adjustments, and the reason code behind each reduction.

ICD-10 diagnoses that support medical necessity

Every 73120 claim needs a supporting ICD-10 diagnosis that establishes medical necessity. A vague or unsupported diagnosis is one of the top denial triggers on hand x-ray claims. The table below lists the pairings billing teams reach for most often.

Fracture codes in the S62 series need full 7th-character specificity, so the truncated stem is not billable. A claim carrying S62 alone rejects on edit. Assign the encounter character and the laterality character wherever the code structure calls for one. A covers initial treatment, D covers subsequent encounters, and S covers sequela.

Validate the diagnosis at charge capture rather than at submission, while the chart is still open and the clinical detail is easy to check.

When payers require prior authorization

Traditional Medicare does not require prior authorization for a plain-film hand x-ray coded to 73120 with a documented indication. The procedure sits outside the CMS prior authorization program for outpatient hospital services, which targets high-cost elective procedures.

Medicare Advantage plans run their own coverage policies. Some ask for authorization even on plain-film imaging, particularly where the study is a follow-up rather than an acute injury. Commercial insurers differ just as widely. Most waive authorization for acute-presentation x-rays, while some want a documentation review on chronic-condition imaging.

Where authorization is required, payers typically ask for:

• Ordering provider NPI and specialty
• Clinical indication and treating diagnosis (ICD-10 code)
• Whether the study is acute, follow-up, or pre-operative
• Previous imaging results, where they show how the need progressed

Why 73120 claims get denied

CPT code 73120 claims fail for a predictable set of reasons, and most are preventable at charge capture. Reading your denial codes after each remittance cycle shows which pattern is hitting your practice hardest.

• View count mismatch. Three views were documented, but the claim went out as 73120 instead of 73130. This is the most common denial on hand x-ray claims. Automated edits catch it when the report conflicts with the billed code.
• Missing or non-specific diagnosis. Unspecified hand pain with no laterality fails medical necessity review. Assign the most specific code available, with laterality and encounter type.
• Incorrect or missing modifier. Billing globally where the physician does not own the equipment, or omitting Modifier 26 where the radiologist only read the film.
• Duplicate billing on one date. Submitting 73120 and 73130 for the same hand on the same date triggers a bundling edit. Bill only the code that matches the view count.
• Missing signed order or documentation. Medicare and most commercial payers require a written order from the ordering provider. An unsigned order, or one that does not match the billed diagnosis, generates a documentation denial.
• Timely filing. A claim filed after the payer’s window is denied whatever its clinical accuracy. Medicare allows one year from the date of service.

Tracking denial reason codes by CPT code surfaces these patterns within weeks. The AAPC’s CPT code reference is a useful second opinion on edit logic before you appeal.

What the medical record must contain

A correct code on a thin chart still loses money. Post-payment review reads the record rather than the claim, so recoupment can land months after the payment cleared. Five items carry a 73120 claim through an audit.

• Written physician order. Signed by the ordering provider, with the clinical indication documented. The ordering provider’s NPI belongs on the claim.
• View count documentation. The technologist’s worksheet or the radiology report states how many views were taken and which projections were acquired.
• Radiology report. A written interpretation by the reading physician, with findings, impression, and the clinical question addressed. A preliminary or unsigned read does not satisfy the requirement.
• ICD-10 diagnosis. The treating diagnosis has to link logically to the need for a two-view hand x-ray. “Hand pain” with no clinical context often fails on audit.
• Rendering provider credentials. The interpreting physician’s credentials and NPI appear in the report and on the claim.

Capturing the view count, the ordering provider, and the diagnosis at the point of service is what keeps the chart audit-ready. Practices that key charges manually from a day-old worksheet lose the view count most often. A quarterly audit of ten radiology charts catches documentation drift before a payer finds it.

Billing by practice setting

Who owns the equipment and who reads the study changes by setting, and the setting decides the modifier. Getting that mapping wrong is one of the most common structural errors in radiology billing.

Practices running claims software for billers can set rules that append the modifier from the place-of-service code on the claim. That removes the most common structural error before the claim leaves the practice.

Use the X12 837P format for electronic submission, with the place-of-service code that matches the setting. Code 11 is a physician office, 22 is an outpatient hospital, and 20 is urgent care.

How Pabau catches a view-count error before the claim goes out

In most practices the charge is keyed after the patient has left. The coder reads the order, sees “hand x-ray”, and picks 73120 without opening the radiology report. Nobody notices the third view until the remittance comes back.

Practice management software like Pabau keeps the imaging record and the charge on one patient file. The view count, the ordering provider, and the diagnosis are on screen when the charge is raised. Claims then go out to the clearinghouse from that same record, so the code and the report cannot drift apart.

The payoff is fewer rework cycles on low-value radiology claims. A global 73120 line pays about $22 to $28. A denial and an appeal cost more staff time than the claim is worth. Catching the error at charge capture is the only version that pays for itself.

Keep radiology claims clean before they leave

Pabau holds the imaging report, the diagnosis, and the charge on one patient record. Your team checks the view count while the chart is still open.

Book a demo

Conclusion

Nothing about 73120 is complicated, which is exactly why it leaks money. The code is cheap and the volume is high. The denial is almost always clerical, and a second pair of eyes would have caught it.

So the work sits upstream of the claim. Count the views in the report rather than the order, code the diagnosis to full specificity, and pick the modifier from who owns the equipment. Do those three things at charge capture and the appeal queue stops filling with twenty-dollar claims.

The trade-off is that someone has to open the report, every time. Book a demo to see how Pabau puts the view count in front of whoever raises the charge.

Continue your research

Need to understand how clearinghouse submission works for radiology claims? Medical claims clearinghouse guide explains how claims route from provider to payer and where edits apply.

Want to reduce claim denials across your full billing operation? Claim.MD clearinghouse overview covers real-time eligibility checks, ERA processing, and denial reason codes.

Looking for a structured approach to billing audits? Medical billing compliance guide outlines quarterly audit frameworks for CPT and ICD-10 accuracy.

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