AAPC Certified Professional Coder (CPC) — All Questions

The same surgeon performs several distinct surgical procedures through separate incisions during one operative session. Which modifier identifies the second and subsequent procedures so the payer can apply the multiple-procedure fee reduction?

• a.Modifier -59 (Distinct procedural service)
• b.Modifier -22 (Increased procedural services)
• c.Modifier -51 (Multiple procedures)✓
• d.Modifier -50 (Bilateral procedure)

Modifier -51 tells the payer that more than one procedure was performed in the same session by the same provider, so payment ranking (100% for the highest-valued, reduced for the rest) can be applied. -50 is only for mirror-image bilateral procedures, -59 unbundles services that are normally packaged together, and -22 signals substantially greater work than usual. Do not confuse the multiple-procedure concept (-51) with unbundling (-59).

When selecting a CPT code for excision of a benign skin lesion, how is the size determined?

• a.The diameter of the lesion alone, ignoring surgical margins
• b.The greatest clinical diameter of the lesion plus the narrowest margin required, measured before excision✓
• c.The total surface area of skin removed, including the repair
• d.The diameter of the specimen as measured by pathology after fixation

Excised diameter equals the lesion's greatest clinical diameter plus the most narrow margins needed on each side, and it must be measured before removal because formalin fixation shrinks tissue. Coding from the pathology report understates the true size. Margins are part of excision sizing, and the closure (repair) is coded separately when it rises to intermediate/complex.

A CPT surgical code carries the parenthetical designation '(separate procedure).' What does this tell the coder?

• a.It is never reimbursable under any circumstance
• b.The procedure is always billed separately in addition to any other service; a '(separate procedure)' designation guarantees independent payment, telling the coder to report it on its own line alongside the primary procedure regardless of whether it was integral to that larger service
• c.It always requires modifier -50
• d.It is bundled when performed as an integral part of a larger procedure, but may be reported when it is the only service or is unrelated/distinct✓

'Separate procedure' means the service is considered an inherent component of a more comprehensive procedure and is not billed when performed at the same site/session as that larger procedure. It becomes reportable only when performed alone or on a different site/session — often supported by modifier -59 or an appropriate X{EPSU} modifier.

For a major surgery with a 90-day global period, which of the following is INCLUDED in the global surgical package and NOT separately reportable?

• a.Treatment of an unrelated new illness during the postoperative period
• b.A staged or planned return to the operating room decided in advance
• c.Diagnostic tests and studies needed to establish the surgical diagnosis; the global surgical package absorbs all preoperative work-up, so imaging and laboratory studies ordered to confirm the need for surgery are bundled into the procedure and not separately reportable
• d.The operation, the related preoperative E/M on the day before or day of surgery, and routine postoperative care during the 90 days✓

The global package bundles the procedure itself, the related pre-op visit the day before/of surgery, intraoperative work, and normal follow-up care through the global window. Unrelated care (modifier -24/-79), staged procedures (-58), and the diagnostic work-up that led to the decision for surgery fall outside the package and are separately payable.

Under the current (2021 and later) office/outpatient E/M guidelines, how is the level of service selected?

• a.By the number of organ systems reviewed in the review of systems, tallied against the documented chief complaint
• b.By the severity of the chief complaint alone
• c.By counting history bullets and examination elements; the 2021-and-later office visit level is still tabulated from the number of documented history and exam findings, and neither total time nor medical decision making may drive the selection
• d.By either the total time spent on the date of the encounter OR the level of medical decision making (MDM)✓

The 2021 overhaul removed history and exam as the drivers of office/outpatient visit level. Coders now choose based on MDM or on total time on the date of service (face-to-face plus non-face-to-face work by the physician/QHP). History and exam are still documented for clinical care but no longer determine the code.

The level of medical decision making (MDM) is determined by three elements. Which set correctly names them?

• a.Number and complexity of problems addressed; amount and/or complexity of data reviewed and analyzed; and risk of complications/morbidity of management✓
• b.Coordination of care, counseling, and the nature of the presenting problem; these three elements are what CPT weighs to arrive at the level of medical decision making, and the complexity of data or the risk of the management options are treated as supporting factors only
• c.History, examination, and time
• d.Chief complaint, review of systems, and past/family/social history

MDM is scored across three columns — problems addressed, data reviewed/analyzed (labs, notes, independent interpretation, discussion with other providers), and risk. The overall level is set by meeting or exceeding two of the three elements. The older history/exam bullets and the 1995/1997 audit approach no longer apply to office visits.

When is modifier -25 correctly appended to an E/M service?

• a.When a significant, separately identifiable E/M is performed by the same provider on the same day as a minor procedure or other service with a global period✓
• b.When reporting a preventive medicine (wellness) visit
• c.When a physician requests a consultation from a specialist; modifier -25 is the mechanism that flags an interprofessional consultation request, and it is appended to the requesting provider's E/M whenever advice is sought from another physician on the same calendar date
• d.When the E/M is the only service billed that day

Modifier -25 unbundles an E/M that stands on its own from a same-day procedure that carries its own inherent pre/post work. The E/M must be above and beyond the usual work associated with the procedure and supported by separate documentation. It is never used simply to get an office visit paid when no other service was performed.

How is the payment for an anesthesia service calculated?

• a.Work RVU multiplied by the geographic practice cost index only
• b.A percentage of the surgeon's fee for the procedure
• c.(Base units + time units + modifying units) multiplied by a locality conversion factor✓
• d.A single flat fee per anesthesia case regardless of duration

Anesthesia uses base units (assigned to each anesthesia CPT code by procedure complexity) plus time units (typically each 15 minutes) plus any modifying units (physical status P3-P5, qualifying circumstances), all multiplied by an anesthesia conversion factor. This unit-and-time model is unique to anesthesia and differs from the RVU method used for most other services.

The anesthesia physical status modifier P3 describes which patient?

• a.A normal, healthy patient with no systemic disease of any kind present
• b.A moribund patient not expected to survive without the operation
• c.A patient with severe systemic disease✓
• d.A patient with mild, well-controlled systemic disease, as classified under P2

Physical status modifiers P1-P6 grade the patient's condition: P1 normal healthy, P2 mild systemic disease, P3 severe systemic disease, P4 severe systemic disease that is a constant threat to life, P5 moribund, P6 brain-dead organ donor. P3, P4, and P5 typically add modifying units because they reflect increased anesthesia risk and complexity.

Which situation is reported with an anesthesia qualifying circumstances add-on code?

• a.Routine anesthesia for a healthy adult elective procedure
• b.Anesthesia complicated by extreme age (younger than 1 year or older than 70)✓
• c.Local anesthesia administered by the operating surgeon
• d.Standard monitored anesthesia care for a screening endoscopy

Qualifying circumstances describe conditions that significantly raise anesthesia complexity — extreme age, use of total body hypothermia or controlled hypotension, and emergency conditions. They are add-on codes reported in addition to the primary anesthesia code. Routine cases and surgeon-administered local anesthesia do not qualify.

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.

When may an organ- or disease-oriented laboratory panel (for example, a basic metabolic panel) be reported with its panel code?

• a.When any two of the individual component tests within the panel are performed together
• b.Whenever the physician orders it by name, regardless of which tests are run
• c.When at least one component test in the panel is performed, with the rest presumed covered
• d.Only when every component test listed in that panel is performed✓

Panels are all-or-nothing: the panel code may be reported only if ALL of its defined component tests are performed. If only some components are done, you report the individual test codes instead. Reporting a panel when a component was not performed is unbundling in reverse and is inaccurate coding.

A pathologist performs the microscopic examination of a surgical specimen and renders the diagnosis in a written report. This physician work represents which component of the service?

• a.The professional component✓
• b.The global service, which cannot be split
• c.A service that is never separately reportable
• d.The technical component

Surgical pathology, like radiology, can split into technical (specimen accessioning, tissue processing, slide preparation) and professional (the pathologist's microscopic interpretation and diagnostic report) components. The pathologist's interpretive work is the professional component, reported with modifier -26 when the lab bills the technical portion separately.

A clinician orders serial potassium levels drawn several hours apart on the same date to monitor a patient. Which modifier is appended to the repeat laboratory tests?

• a.Modifier -76 (repeat procedure by the same physician)
• b.Modifier -91 (repeat clinical diagnostic laboratory test)✓
• c.Modifier -59 (distinct procedural service)
• d.Modifier -26 (professional component)

Modifier -91 is specific to laboratory tests intentionally repeated on the same day to obtain successive (serial) results — a medically necessary trend, not a re-run of a bad specimen. -76 applies to repeated procedures/services (e.g., imaging), not to clinical lab. Using -91 correctly distinguishes legitimate serial testing from duplicate billing.

Two services are ordinarily bundled under NCCI edits, but on this encounter they were performed at separate sites and are genuinely independent. No more specific modifier applies. Which modifier may be appropriate?

• a.Modifier -59 (distinct procedural service)✓
• b.Modifier -26 (professional component of a service split into professional and technical parts)
• c.Modifier -50 (bilateral procedure performed on mirror-image paired anatomic sites)
• d.Modifier -22 (increased procedural services)

Modifier -59 unbundles services that NCCI normally pairs together when documentation shows a distinct session, site, lesion, or organ system. It should be used only when no more precise modifier (such as anatomical X{EPSU} modifiers -XE, -XS, -XP, -XU) applies. -59 must never be used simply to bypass an edit for reimbursement without clinical justification.

A psychiatrist provides both a medical E/M service and psychotherapy to the same patient during one encounter. How is this reported?

• a.Report the E/M based on MDM and the psychotherapy add-on based on its own separately documented time, with the two work efforts kept distinct✓
• b.Report only the E/M service and disregard the psychotherapy
• c.Append modifier -50 to the psychotherapy code
• d.Report a single combined code that covers both; CPT provides bundled psychiatric codes that encompass the medical evaluation and the psychotherapy in one value, so the E/M and the psychotherapy add-on are never reported separately for the same encounter

Psychotherapy add-on codes are used with an E/M when both services are provided. The E/M is leveled by MDM (time cannot be used because the psychotherapy time is carved out), and the psychotherapy is chosen by its own documented time. The clinician must be able to separate the medical and therapy work in the note.

A nurse administers an influenza vaccine to an established patient in the clinic. What must be coded to fully capture the service?

• a.Only the immunization administration code
• b.A separate E/M visit for each vaccine given
• c.Both the vaccine/toxoid product code and the immunization administration code✓
• d.Only the vaccine/toxoid product code

Immunizations require two codes: the product (the specific vaccine/toxoid) and the administration (how it was given, e.g., percutaneous/intramuscular, with or without counseling for younger patients). Reporting only one undercodes the encounter. A separate E/M with modifier -25 is added only when a significant, separately identifiable evaluation was also performed.

In ICD-10-CM inpatient coding, the principal diagnosis is defined as:

• a.Whichever diagnosis is easiest to assign a code to
• b.Any chronic condition the patient carries
• c.The comorbidity with the highest severity of illness
• d.The condition established after study to be chiefly responsible for occasioning the admission✓

The principal diagnosis is the condition determined, after study, to be chiefly responsible for the admission. In the outpatient setting the parallel concept is the 'first-listed' diagnosis — the reason chiefly responsible for the visit. Accurate sequencing drives reimbursement and data integrity, so this definition is foundational to ICD-10-CM.

When is the placeholder character 'X' required in an ICD-10-CM code?

• a.It is never used in ICD-10-CM
• b.It is added to the end of every injury code as a routine seventh-character placeholder; ICD-10-CM requires the letter 'X' after the final character of all Chapter 19 injury codes to mark them as trauma, independent of whether the code already contains six characters
• c.It is used to indicate a bilateral condition
• d.When a code requires a 7th character but has fewer than 6 characters, 'X' fills the empty positions so the 7th character lands in the correct place✓

ICD-10-CM uses 'X' as a placeholder to hold empty character positions so that a required 7th character (for example A, D, or S on injury/external-cause codes) occupies the seventh slot. Omitting the placeholder makes the code invalid. The placeholder has no clinical meaning of its own — it is purely structural.

Which federal law makes it illegal to knowingly submit, or cause the submission of, false or fraudulent claims to Medicare or Medicaid?

• a.The Clinical Laboratory Improvement Amendments (CLIA)
• b.The False Claims Act✓
• c.The Emergency Medical Treatment and Labor Act (EMTALA)
• d.The HIPAA Privacy Rule

The False Claims Act imposes civil liability (and treble damages/penalties) for knowingly presenting false claims to the government, and it underpins much of coding compliance. The HIPAA Privacy Rule governs protected health information, EMTALA governs emergency screening/stabilization, and CLIA governs laboratory quality — none of which is the anti-false-claims statute.

What distinguishes an 'intermediate' wound repair from a 'simple' repair in CPT?

• a.Intermediate repair requires layered closure of one or more deeper layers (subcutaneous tissue/superficial fascia) in addition to the skin, or single-layer closure of a heavily contaminated wound needing extensive cleaning✓
• b.Intermediate repair is defined by the use of staples instead of sutures; the CPT repair classification turns entirely on the closure material chosen, so any wound closed with staples, adhesive strips, or tissue glue is automatically intermediate no matter how many skin layers were involved or how clean the wound was
• c.Intermediate repair is any laceration longer than 2.5 cm
• d.Intermediate repair always includes debridement down to bone

Repair (closure) codes are grouped as simple, intermediate, or complex. Simple is a one-layer closure of superficial wounds. Intermediate requires layered closure of deeper subcutaneous tissue/superficial (non-muscle) fascia in addition to the skin, or single-layer closure of a wound so contaminated it needs extensive cleaning/foreign-body removal. Complexity is about the layers and work involved, not simply length or the closure material.

A provider performs several wound repairs that are all the same classification (e.g., all intermediate) and fall within the same anatomic-site grouping listed in CPT. How are they reported?

• a.Add the lengths of the repairs together and report one code for the summed length✓
• b.Report each repair as a separate line with modifier -51 regardless of location
• c.Report only the single longest repair and disregard the others
• d.Report only the shortest repair

CPT instructs coders to sum the lengths of repairs that are in the SAME classification AND the SAME anatomic-site grouping, then report a single code for that combined length. Repairs of different classifications, or in different anatomic groupings, are reported separately (the more complex listed first, others with modifier -59 as appropriate). This summation rule prevents both under- and over-reporting of laceration repairs.

During the postoperative global period, the patient must be taken back to the operating room for an unplanned procedure to treat a complication of the original surgery. Which modifier applies to that return trip?

• a.-79 (unrelated procedure by the same physician during the postoperative period)
• b.-78 (unplanned return to the operating/procedure room for a related procedure)✓
• c.-76 (repeat procedure by the same physician, used when an identical service is simply repeated)
• d.-58 (staged or related procedure planned prospectively at the time of the original surgery)

Modifier -78 reports an UNPLANNED return to the OR/procedure room during the global period for a problem related to the first surgery (typically a complication). It is distinct from -58 (something planned or staged in advance), -79 (a completely unrelated procedure), and -76 (a simple repeat of the same service, not a return to the OR). Choosing -78 correctly signals a related, unplanned reoperation.

At the time of the initial surgery, the surgeon documents that a second, more extensive procedure will be performed in stages during the global period. Which modifier is appended to the later staged procedure?

• a.-24 (unrelated E/M during the postoperative period)
• b.-58 (staged or related procedure/therapy planned prospectively)✓
• c.-79 (unrelated procedure)
• d.-78 (unplanned return for a complication)

Modifier -58 identifies a procedure during the global period that was planned or anticipated (staged), is more extensive than the original, or is therapy following a diagnostic procedure. The key is that it was prospectively planned — unlike -78, which is an unplanned return for a complication. Sequencing modifiers correctly protects reimbursement for legitimately staged care.

Two surgeons of different specialties each act as a primary surgeon, performing distinct parts of the same operative procedure. Which modifier does each surgeon append?

• a.-62 (two surgeons / co-surgeons)✓
• b.-82 (assistant surgeon when a qualified resident is unavailable)
• c.-66 (surgical team, used when a team of surgeons is required for one highly complex procedure)
• d.-80 (assistant surgeon actively assisting the primary surgeon throughout the procedure)

Modifier -62 is used when two surgeons work together as co-surgeons, each performing a distinct portion of the same procedure and each reporting the same code with -62. This differs from an assistant (-80/-81/-82), who helps a single primary surgeon, and from a surgical team (-66), which involves several physicians and other highly specialized personnel.

A second physician actively assists the primary surgeon throughout an operation in a non-teaching setting. Which modifier reports the assistant surgeon's service?

• a.-62 (co-surgeons)
• b.-80 (assistant surgeon)✓
• c.-81 (minimum assistant surgeon)
• d.-82 (assistant surgeon when a qualified resident surgeon is not available)

Modifier -80 is the standard assistant-surgeon modifier for a physician who assists throughout the procedure. -81 reports minimal assistance for part of the procedure, and -82 is specific to teaching hospitals where a qualified resident surgeon was not available. Matching the assistant scenario to the right modifier (-80 vs -81 vs -82) is a common CPC test point.

When a surgical endoscopy is performed, how is the diagnostic endoscopy of the same anatomic site handled?

• a.It replaces the surgical endoscopy code
• b.It is reported separately with modifier -59
• c.It is bundled into the surgical endoscopy and is not separately reportable✓
• d.It is always reported separately with modifier -51

A surgical endoscopy always includes the diagnostic endoscopy of the same site — you cannot operate endoscopically without first visualizing the area. Therefore the diagnostic scope is bundled into the surgical scope and is not separately billable. This is a specific application of the broader rule that a diagnostic procedure inherent to a therapeutic one is not reported separately.

A surgeon excises two separate benign lesions at two different anatomic sites during one operative session. How is this reported?

• a.A separate excision code for each lesion, sized individually, with an appropriate distinct-service modifier when required✓
• b.A single code representing the combined diameter of both lesions; when two lesions are excised at different sites their greatest diameters are added together and reported under one excision code sized to that total, rather than coding each lesion on its own line
• c.One code for the largest lesion only, with the smaller lesion considered incidental to the same operative field and not separately reportable
• d.One excision code with modifier -50

Lesion excisions are reported per lesion — each excision is sized by its own greatest clinical diameter plus narrowest margins and coded individually. You never add two lesions' diameters together, and -50 (bilateral) applies only to mirror-image paired structures, not to two unrelated lesions. Modifier -59 or an anatomic modifier may be needed to show the lesions are distinct.

Modifier -51 (multiple procedures) should NOT be appended to which of the following?

• a.Every procedure performed in the same session
• b.Bilateral procedures
• c.Codes reported from the radiology section
• d.Add-on codes and codes designated as modifier -51 exempt✓

Add-on codes (which by definition describe additional work performed with a primary procedure) and codes flagged as modifier -51 exempt are never appended with -51 — they are already valued to be reported in addition to the primary service and are not subject to the multiple-procedure fee reduction. Applying -51 to these codes is an error CPT specifically warns against.

Does closed treatment of a fracture WITHOUT manipulation carry a global surgical package (a global period)?

• a.Only if the patient is admitted as an inpatient
• b.No — without manipulation there is no procedure, so it is coded only as an E/M visit
• c.Only when a cast is applied by an orthopedic surgeon
• d.Yes — fracture care codes include a global period and bundle routine follow-up care whether or not manipulation was performed✓

Fracture care (restorative treatment) codes are 'surgical' codes with global periods even when no manipulation or incision occurs. Reporting fracture care commits you to the global package — the initial casting/strapping and normal follow-up visits are included. Alternatively, a provider may choose E/M plus casting/supply codes, but the two approaches should not be double-billed.

Which modifier identifies the E/M service at which the decision to perform a major (90-day global) surgery was made?

• a.-24 (unrelated E/M during a postoperative period)
• b.-57 (decision for surgery)✓
• c.-25 (significant, separately identifiable E/M on the day of a procedure)
• d.-58 (staged procedure)

Modifier -57 marks the E/M visit (the day before or day of a major/90-day-global surgery) at which the surgeon decided to operate; without it, that visit may be denied as part of the global package. Do not confuse it with -25, which is used with MINOR procedures (0/10-day global). Matching -57 to major surgery and -25 to minor procedures is a frequent exam distinction.

A patient received professional (face-to-face) services from a physician of the same specialty in the same group practice within the prior three years. For E/M coding, this patient is:

• a.A new patient, because each visit is evaluated on its own
• b.A new patient if a different diagnosis is addressed
• c.An established patient✓
• d.A consultation

The new-vs-established test is the three-year rule: a patient is 'new' only if they have not received a professional service from that provider — or another provider of the exact same specialty/subspecialty in the same group — within the past three years. Here the prior visit was within three years and same specialty/group, so the patient is established. The diagnosis addressed does not change this.

Under the 2021-and-later office/outpatient E/M rules, the 'total time' used to select the level includes:

• a.Only face-to-face time spent with the patient
• b.Time spent by clinical staff (nurses/medical assistants) in addition to the physician
• c.All qualifying face-to-face and non-face-to-face time personally spent by the physician/QHP on the date of the encounter✓
• d.Time spent on any day within the same week as the visit

Total time now counts the physician's/QHP's own face-to-face AND non-face-to-face work performed on the date of the encounter — chart review, ordering tests, documenting, care coordination, and counseling. It does NOT include staff time or work done on other days. Understanding what counts toward time prevents inflating the visit level.

When the physician's total time exceeds the time required for the highest-level office/outpatient visit, the additional time is captured with:

• a.Modifier -22 (increased procedural services)
• b.A prolonged services add-on code✓
• c.A higher-level new-patient code chosen without regard to time
• d.A critical care code

Once documented time exceeds the threshold of the highest-level office visit, the extra time is reported with the appropriate prolonged services add-on code (reported in addition to the highest-level E/M). Modifier -22 is for surgical/procedural work, not E/M time, and you cannot simply jump to an unrelated higher code. Prolonged-services rules reward the additional cognitive time appropriately.

For payers that still recognize consultation codes, a service qualifies as a consultation only when there is:

• a.A request from another provider, the consultant's opinion/advice rendered, and a written report back to the requesting provider (the 'three Rs')✓
• b.Any visit to a specialist, regardless of who initiated it
• c.A patient self-referral for a second opinion
• d.A transfer of the patient's complete care to the specialist; a consultation is properly reported whenever a patient's ongoing management is handed off, and the transfer of care itself satisfies the requirement without any written report back to the requesting provider

A true consultation requires the three Rs: a Request for opinion/advice from another physician or appropriate source, the consultant Rendering that opinion (and any services), and a written Report communicated back to the requester. If the specialist simply assumes ongoing management, or the patient self-refers, it is not a consultation and an office/outpatient E/M is used instead.

Which statement about critical care E/M coding is correct?

• a.Each 15-minute increment is reported separately regardless of total time; critical care is billed in discrete quarter-hour units, and the coder tallies one unit per 15 minutes of care with no single base code capturing the first block of time
• b.It is reported based on the total time spent caring for the critically ill patient, and certain bundled ancillary services are not separately billable✓
• c.It may only be reported in the emergency department
• d.It is selected by medical decision making rather than time

Critical care is time-based: the first code covers a defined block of time and an add-on captures each additional block. CPT bundles several services into critical care (e.g., certain vascular access, blood gas interpretation, ventilator management, and specified data reviews), which cannot be billed separately during the critical care time. It may be provided in any location where the patient is critically ill, not just the ED.

Emergency department (ED) E/M codes differ from office E/M codes in that they:

• a.Are always selected by the total time the physician spends in the emergency department, counting both bedside and coordination time
• b.Do not distinguish new from established patients and are not leveled by time (they are selected by medical decision making)✓
• c.Distinguish new from established patients; emergency department E/M codes, like office codes, branch on whether the patient is new or established to the group, so the coder must verify a three-year prior-encounter history before selecting the ED level
• d.Require modifier -57 on every claim

ED E/M codes make no new-vs-established distinction because emergency care is provided regardless of prior relationship, and they are not chosen by time (time is not a factor in the ED code family). The level is driven by medical decision making. Knowing which E/M families allow a time basis — and which do not — is essential to correct leveling.

During an annual preventive medicine visit, the provider also evaluates and manages a significant, separate new problem. How is this reported?

• a.Only the preventive medicine code; when a separate significant problem is addressed at a wellness visit its work is folded into the comprehensive preventive service, so a problem-oriented E/M with modifier -25 is not additionally reportable on the same date
• b.Only the problem-oriented E/M code
• c.Both the preventive medicine service and a problem-oriented office/outpatient E/M code, with modifier -25 on the problem-oriented visit✓
• d.A single combined code

When a significant, separately identifiable problem is addressed at a wellness visit, both services are reported: the preventive medicine code plus the appropriate office/outpatient E/M for the problem, with modifier -25 on the problem visit to show it stands apart from the preventive service. The problem work must be documented separately and be significant — not just an incidental note.