AAPC Certified Professional Coder (CPC) — All Questions

A radiologist reads films taken at a hospital and dictates the report, but does not own the equipment. Which modifier reports only the physician's work?

• a.Modifier -TC (technical component), which reports the equipment and technologist portion
• b.Modifier -26 (professional component)✓
• c.No modifier — the global service is reported
• d.Modifier -76 (repeat procedure by the same physician on the same day)

Many radiology codes split into a professional component (the physician's supervision, interpretation, and written report — modifier -26) and a technical component (equipment, supplies, technologist — modifier -TC). When the physician only interprets, append -26; the facility bills -TC. Reporting the code with no modifier claims the global (both components), which would be incorrect here.

A CPT code describes a 'complete' ultrasound of the abdomen. What must the documentation support to use the complete study code rather than a limited study?

• a.Only the clinical indication for the study
• b.Evaluation and documentation of all required elements for that complete exam (for the complete abdomen: liver, gallbladder, common bile duct, pancreas, spleen, kidneys, and the upper abdominal aorta and inferior vena cava)✓
• c.Only the kidneys, because they are the largest structures imaged; under CPT a complete abdominal ultrasound is satisfied by bilateral renal views alone, and the liver, gallbladder, common bile duct, pancreas, spleen, and great vessels are treated as optional add-on images billed separately as a limited study
• d.Imaging of a single organ of interest

'Complete' ultrasound codes require that every anatomic element listed in the CPT guidelines be examined and documented. If the study images fewer than all required structures, or targets a single organ/quadrant, it is a 'limited' study. Coding a complete exam without the full documented survey is an overcode.

In CPT radiology, when a code specifies 'with contrast,' contrast material must be administered by which route(s)?

• a.Topically on the skin surface
• b.Any route, including oral, so long as any contrast is used; CPT counts a study as 'with contrast' whenever contrast material is introduced by any means, so oral or rectal opacification alone fully satisfies the requirement just as an intravascular injection would
• c.Orally or rectally only, since enteral opacification of the bowel is the route CPT recognizes as satisfying a 'with contrast' study
• d.Intravascularly, intra-articularly, or intrathecally (oral or rectal contrast alone does NOT satisfy 'with contrast')✓

CPT defines 'with contrast' as contrast given intravascularly, intra-articularly, or intrathecally. Contrast given only by mouth or rectum is coded as 'without contrast.' A study that starts without contrast and then adds IV contrast is coded 'without contrast followed by with contrast.' Knowing the route prevents miscoding CT/MR studies.

A chest x-ray is repeated later the same day by the same physician to reassess the patient's condition. Which modifier is appended to the second study?

• a.-91 (repeat clinical diagnostic laboratory test)
• b.-59 (distinct procedural service used to unbundle separately performed procedures)
• c.-76 (repeat procedure by the same physician)✓
• d.-77 (repeat procedure by another physician who did not perform the first study)

Modifier -76 tells the payer the same physician intentionally repeated the same procedure/service on the same day — here, a follow-up chest film. -77 is the parallel modifier when a DIFFERENT physician repeats it. -91 is reserved for repeat laboratory tests, and -59 unbundles distinct services. Using -76 shows the repeat is legitimate, not a duplicate claim.

An x-ray is performed on the right knee only. Which HCPCS Level II modifier reports the laterality?

• a.-LT (left side)
• b.-50 (bilateral procedure)
• c.-RT (right side)✓
• d.-TC (technical component)

HCPCS laterality modifiers -RT (right) and -LT (left) identify the side of the body treated or imaged. -RT is correct for a right-knee study. -50 would be wrong because only one side was imaged, and -TC addresses the technical/professional split, not laterality. Laterality modifiers support medical necessity and correct payment for paired structures.

Many interventional procedures are reported with two codes: the procedure itself and a 'radiological supervision and interpretation' (S&I) code. What does the S&I code capture?

• a.The surgical tray and supplies only
• b.The anesthesia provided for the procedure
• c.A duplicate of the procedure code billed for extra payment
• d.The imaging guidance, supervision, and interpretation that accompany the interventional procedure✓

In older component coding, an interventional service is split into the procedural (catheter placement, injection) code and a radiological S&I code that captures the imaging guidance, supervision, and interpretation. Many newer codes bundle these together, but where the split still exists, the S&I code is not a duplicate — it represents the distinct imaging work supporting the procedure.

In nuclear medicine imaging, how is the radiopharmaceutical (radioactive tracer) handled for coding?

• a.It is reported separately, in addition to the imaging procedure code✓
• b.It is included in the imaging code and never separately reported
• c.It is reported only with modifier -26
• d.It is reported instead of the imaging code

Nuclear medicine imaging codes describe the imaging procedure only; the radiopharmaceutical/diagnostic tracer is a separately reportable supply (typically a HCPCS Level II code) billed in addition to the imaging code by the entity that incurred its cost. Failing to capture the tracer undercodes the encounter. It is a supply, not a professional-component item.

For plain-film (x-ray) coding, code selection most commonly depends on:

• a.The patient's age
• b.Whether oral contrast was given
• c.The number of views documented✓
• d.The referring provider's specialty

Plain radiographs are frequently coded by the number of views obtained (for example, a two-view chest x-ray versus a single view). The documentation must state how many views were taken so the correct code is chosen. Age, referring specialty, and oral contrast do not drive plain-film code selection; view count does.

The technical component (modifier -TC) of a diagnostic radiology service includes:

• a.The equipment, supplies, film/media, and technologist — but not the physician's interpretation✓
• b.Only the radiologist's supervision of the study
• c.Both the physician interpretation and the equipment (the global service)
• d.The physician's interpretation and written report

The technical component covers the resources to produce the image: equipment, room, supplies, film/media, and the technologist's work. It specifically excludes the physician's interpretation and report, which is the professional component (-26). Together -TC and -26 equal the global service. Knowing exactly what each component includes prevents billing both when only one was performed.

A physician owns the imaging equipment AND personally interprets the study. How is the service reported?

• a.Modifier -26 only, reported for the professional work; when a physician both owns the imaging equipment and personally interprets the study, the technical ownership is disregarded for coding and only the professional component with modifier -26 is submitted
• b.Modifier -52 for reduced services, appended because performing both the technical and professional components together is a partially reduced study
• c.The global service — no professional/technical split (neither -26 nor -TC), because the physician provided both components✓
• d.Modifier -TC only

When a single provider furnishes both the technical resources and the professional interpretation, they report the global service with no split modifier. -26 would claim only the interpretation, and -TC only the equipment — each understating what was done. -52 (reduced services) is unrelated. Reporting the global code correctly captures both components in one claim.

When a facility performs a CT scan 'with contrast,' the contrast material itself is:

• a.Often reported separately with a HCPCS Level II supply code by the entity that incurred the cost (the technical/global biller)✓
• b.Always included in the professional component (-26); the cost of CT contrast material is captured within the radiologist's interpretation, so it is bundled into the professional component and can never be billed separately with a HCPCS supply code
• c.Reported only as an E/M service
• d.Never billable under any circumstance

The imaging code describes the study; the contrast agent is a supply that the facility (technical/global biller) frequently reports separately using a HCPCS Level II code. It is not part of the physician's professional component and is not an E/M service. Capturing the contrast supply — while coding the study 'with contrast' only when the route qualifies — is standard imaging practice.

The distinction between a screening and a diagnostic mammogram is that:

• a.A screening mammogram evaluates an asymptomatic patient for early detection, while a diagnostic mammogram evaluates a patient with signs/symptoms or an abnormal screen✓
• b.They always use entirely different equipment; a screening study must be acquired on a dedicated screening-only mammography unit while a diagnostic study requires a separately certified diagnostic machine, and the presence or absence of the patient's signs and symptoms plays no role in choosing the code
• c.Only the diagnostic study uses contrast
• d.A screening mammogram requires a biopsy

A screening mammogram is performed on an asymptomatic patient for early detection, whereas a diagnostic mammogram evaluates a patient with signs/symptoms (e.g., a lump) or follows up an abnormal screening result. The reason for the study drives both the procedure code and the ICD-10-CM diagnosis. The trap is assuming equipment or contrast distinguishes them — it is the clinical indication.

Many current CPT procedure codes state that imaging guidance is 'included when performed.' This means:

• a.Guidance must always be billed with a separate code; the phrase 'included when performed' signals that the imaging guidance keeps its own separately reportable code, and the coder must add the guidance line to the procedure whenever imaging is used
• b.Modifier -26 is required on the procedure to carve out the professional component, since the bundled imaging guidance is the technical portion
• c.Guidance is never actually performed
• d.The imaging guidance is bundled into the procedure code and is not separately reportable when performed during that procedure✓

When a code states imaging guidance is included when performed, the guidance is bundled into the procedure and cannot be reported separately for that service. This reflects CPT's trend toward comprehensive codes. The trap is separately reporting an imaging-guidance code that is already built into the procedure — an unbundling error.

In CPT radiology, a study coded 'with and without contrast' requires:

• a.Imaging performed BEFORE contrast (without) AND after contrast administration (with), in the same session✓
• b.Only pre-contrast images
• c.Oral contrast alone at any point
• d.Only post-contrast images acquired after the contrast agent has been administered intravenously to the patient

'With and without contrast' means non-contrast images followed by contrast-enhanced images in the same session. 'Without contrast' means no contrast, and 'with contrast' means images obtained after contrast is given. Documentation must support each phase performed to assign the combined code.

For CPT radiology 'with contrast' coding, contrast administered by which route generally does NOT qualify a study as 'with contrast'?

• a.Intrathecal administration
• b.Oral or rectal administration alone✓
• c.Intra-articular administration
• d.Intravenous administration

CPT defines 'with contrast' as contrast given intravascularly, intra-articularly, or intrathecally. Contrast given only orally and/or rectally does not meet the 'with contrast' definition and is coded as 'without contrast.' Route documentation therefore directly affects code selection.

A 'complete' ultrasound examination (versus a 'limited' study) requires documentation that:

• a.Only the single organ or quadrant of clinical interest was imaged and documented in the final ultrasound report by the sonographer
• b.Contrast was administered
• c.All required elements/structures for that anatomic region were evaluated (or documented as not seen despite attempt)✓
• d.The study lasted at least 30 minutes

A 'complete' ultrasound requires evaluation and documentation of all the elements specified for that anatomic area (with an explanation when an element cannot be visualized). A 'limited' study images fewer elements or a single organ/quadrant. Missing required elements downgrades a complete study to limited.

A duplex scan differs from a standard (gray-scale) ultrasound in that a duplex scan:

• a.Never evaluates blood flow
• b.Uses ionizing radiation rather than sound waves to construct the two-dimensional image of the vessel and its surrounding structures
• c.Requires intravenous contrast
• d.Combines two-dimensional real-time imaging with Doppler evaluation (spectral analysis and/or color-flow) of blood flow✓

Duplex scanning integrates B-mode (gray-scale) real-time imaging with Doppler assessment of flow (spectral display, and often color-flow mapping). Codes are selected by the vascular territory and whether the study is complete or limited/follow-up. A plain gray-scale ultrasound without Doppler is coded differently.

Radiation treatment DELIVERY differs from radiation treatment MANAGEMENT in that treatment management is generally reported:

• a.By the megavoltage energy used
• b.Per individual radiation fraction delivered to the patient during each treatment session
• c.Only once for the entire course
• d.Per five fractions (treatment sessions), reflecting the physician's weekly oversight✓

Radiation treatment management is typically reported in units of five fractions (roughly weekly physician management), whereas treatment delivery is reported per session and captures the technical delivery. Treatment planning and simulation are separate services. Mixing delivery and management units is a common radiation-oncology error.

Radiation treatment PLANNING codes are selected by:

• a.The number of fractions delivered
• b.The type of linear accelerator
• c.The patient's age
• d.The complexity of the planning (simple, intermediate, or complex)✓

Clinical treatment planning is leveled as simple, intermediate, or complex based on the number of treatment areas, modifying factors, and complexity of dosimetry/shielding considerations. Planning is distinct from simulation, dosimetry, and the delivery/management services in a radiation-oncology course.

Under current CPT, digital screening mammography that includes computer-aided detection (CAD) is coded such that CAD is:

• a.Always a separately reportable add-on code
• b.Bundled into the mammography code rather than reported as a separate add-on✓
• c.Reported only with modifier -26
• d.Never performed with screening mammography

Contemporary mammography codes (screening and diagnostic) incorporate computer-aided detection when performed, so CAD is not separately reported. Screening mammography images a patient without signs/symptoms; a diagnostic mammogram evaluates a sign, symptom, or finding — the clinical indication drives the screening-versus-diagnostic choice.

A physician who owns the imaging equipment AND personally interprets the study reports the service:

• a.Globally, with no professional/technical modifier✓
• b.With both -26 and -TC on separate lines to the same payer
• c.With modifier -TC (technical component) only
• d.With modifier -26 (professional component) only

When one entity provides both the technical component (equipment, technologist, supplies) and the professional component (interpretation and report), the global service is reported with NO -26 or -TC modifier. Modifier -26 is for interpretation only; -TC is for the technical portion only. Reporting both modifiers to the same payer would be redundant.

For a diagnostic imaging study inherently described as unilateral but performed on both sides, the coder generally reports it:

• a.With modifier -59 on both lines
• b.With modifier -76 appended to report the imaging of the second side as a repeat procedure
• c.Once, ignoring the second side
• d.With modifier -50 (or -RT and -LT per payer policy) to reflect the bilateral service✓

Bilateral diagnostic imaging of an inherently unilateral code is reported with modifier -50 (or -RT/-LT on separate lines, per payer). Some imaging codes already describe bilateral studies, in which case no bilateral modifier is used. Laterality/HCPCS side modifiers are also used to specify which side when relevant.

When a CPT procedure code states that imaging guidance (e.g., fluoroscopic or ultrasound guidance) is 'included when performed,' the coder should:

• a.NOT separately report the imaging guidance, because it is bundled into the procedure code✓
• b.Report the guidance code twice
• c.Report the guidance only with modifier -59
• d.Always report a separate imaging-guidance code in addition to the procedure, appending modifier -59

When a procedure descriptor bundles imaging guidance ('included when performed'), the guidance is not separately reportable — doing so would be unbundling. When guidance is NOT included in the descriptor and is documented, the appropriate guidance code may be reported per CPT/NCCI rules.

A dual-energy x-ray absorptiometry (DXA) study is used to:

• a.Evaluate coronary blood flow
• b.Detect acute intracranial hemorrhage
• c.Measure bone mineral density (e.g., to assess osteoporosis)✓
• d.Stage a solid tumor with contrast

DXA (bone densitometry) quantifies bone mineral density, commonly of the axial skeleton (spine/hip) or appendicular sites, chiefly to diagnose or monitor osteoporosis. Codes are selected by the anatomic site/type of study; it is a low-radiation diagnostic radiology service.

For interventional procedures historically reported with two codes (the procedure plus a separate 'radiological supervision and interpretation' code), many CURRENT CPT codes have been revised so that they:

• a.Bundle the catheterization/procedure and the imaging supervision/interpretation into a single combined code✓
• b.Require three separate codes instead
• c.Are reported only by the facility and never by the interpreting physician, who instead bills a professional-component modifier
• d.Deleted the procedural component entirely

Many interventional radiology services were revised into combined codes that include both the procedural work (e.g., catheter placement) and the radiological supervision and interpretation, reducing the older two-code (procedure + RS&I) reporting. Coders must verify whether a given service uses a combined code or still requires a separate RS&I code.

When ultrasound guidance is reported for a needle placement, the code generally requires:

• a.Intravenous contrast administration
• b.A minimum of three separate needle passes
• c.Only a verbal note that ultrasound was used
• d.Documentation and a permanently recorded image of the guidance✓

Imaging-guidance codes (e.g., ultrasound guidance for needle placement) require documentation of the guidance AND retention of a permanent image in the record. Without a stored image and supporting documentation, the guidance is not separately reportable. The underlying procedure is reported with its own code.