CPC Instructor (CPC-I) Coding Exam Preparation Guide Study Guide

Apply it

Locate the likely code family in the Index, then inspect the code and relevant category and chapter notes in the Tabular List. Confirm specificity, laterality, placeholders, and seventh characters against the documentation and applicable code year. Read surrounding instructions rather than relying on a search result.

Apply it

For a family distinguishing right and left, use the side supported by the record. If required information is absent or conflicting, follow the applicable clarification process. Use documented stage or severity when required and supported, then verify the complete code and notes in the Tabular List.

Apply it

If an outpatient assessment says possible pneumonia while testing is pending, report documented symptoms and established findings rather than pneumonia as confirmed. If a definitive diagnosis is established by the end of the encounter, code it under the applicable instructions and documentation.

Apply it

When a disease and complication are documented together, check whether the code family offers a combination code and read its instructions. Confirm that the record supports any required relationship. If no applicable combination code exists, report codes that accurately represent the documented conditions.

Apply it

For documented type 2 diabetes and stage 3 CKD, review the diabetes category instructions, select the supported diabetes-with-kidney-complication code, and report the documented CKD stage code as directed. Verify the release applicable to the service date and the exact Tabular requirements.

Apply it

When hypertension and stage 4 CKD are documented without a statement that they are unrelated, review the hypertensive CKD category and report the stage code as directed. Add a heart-disease code only when heart disease is documented and applicable instructions support it.

Apply it

For routine healing after initial fracture treatment elsewhere, select the character for the documented current phase under the specific fracture family. Add required placeholders where necessary and verify that the completed code has the correct number and order of characters.

Apply it

Compare routine follow-up while an injury is healing with a later visit for stiffness after the injury has healed. The first may be subsequent care; the later residual effect may call for sequela coding, subject to code-family instructions and the documented relationship.

Apply it

For a documented rash after a correctly prescribed medication was taken as directed, code the rash first, then consult the drug table and Tabular List for the applicable adverse-effect code and required characters. Confirm the substance and circumstances before finalizing the sequence.

Apply it

If a patient accidentally takes twice the prescribed amount and develops dizziness, classify the event as poisoning. Use the drug table and applicable instructions to select the code, then report the manifestation in the required sequence and include required encounter characters.

Apply it

If a patient takes half the prescribed amount because of cost and the condition worsens, report the documented condition and review underdosing and reason-for-nonadherence instructions. Confirm the reason in the record rather than inferring why less medication was taken.

Apply it

If testing for abdominal discomfort is inconclusive, report the documented symptom rather than treating a suspected disease as confirmed. If a definitive diagnosis is established, check whether the symptom is integral or separately reportable under the applicable classification and setting rules.

Apply it

When both conditions are documented and an Excludes2 note applies, confirm each is present and separately reportable. For an Excludes1 note, assess whether the limited unrelated-condition guidance applies before reporting both, and review the specific note in its classification context.

Apply it

When a selected code directs the coder to add a documented stage, identify the stage code and sequence it as instructed. Review notes at code, category, and chapter levels because relevant instructions may appear outside an individual entry and affect the final code set.

Apply it

When a code family requires a seventh character but the base code has fewer than six characters, insert required placeholders before the seventh character. Check the resulting sequence in the Tabular List and verify the entire code, including any required character position.

Apply it

If the current assessment and an eligible clinician's documentation identify the left knee, use that detail when permitted. If entries conflict, resolve the conflict rather than choosing one without clarification. Confirm that the code family distinguishes laterality and the source is allowed.

Apply it

When an outpatient visit addresses two conditions but one chiefly prompted the services, select the first-listed diagnosis from the visit context and applicable instructions. Then report other supported, relevant conditions when appropriate and follow any sequencing notes that apply.

Apply it

If a provider documents a pressure-ulcer diagnosis and an eligible clinician documents its stage, use that detail when permitted. If a laboratory result suggests a complication but no provider diagnosed it, code established diagnoses and seek clarification when appropriate.

Apply it

For a remote, resolved disease during care for an unrelated active diagnosis, consider a history code only when relevant and supported. Code the current condition independently using its own code family and instructions, and check whether the history or status affects care.

Apply it

If the documentation establishes an underlying disease and its manifestation, and the Tabular List identifies the manifestation code as “in diseases classified elsewhere” with a “Code first” instruction, verify both entries and sequence the underlying disease first. If a code directs the coder to add a documented manifestation, stage, or other specified detail, report it as instructed. The selected codes and notes—not the order in which conditions appear in the visit narrative—determine sequencing.

Apply it

Before coding a claim, establish the date of service and setting, then verify the corresponding code set and guidelines. Keep that claim-specific choice separate from examination preparation using AAPC's current-calendar-year reference policy and code-set instructions.

Apply it

Example: An established patient has one stable chronic condition, the clinician orders one unique laboratory test, and the clinician adjusts a prescription medication. The stable chronic illness supports low problem complexity. One unique test by itself does not meet the limited-data threshold, so data does not reach low. Prescription drug management supports moderate risk. The problem and risk elements each meet or exceed low, while only risk reaches moderate; therefore, two of three support low MDM, not moderate. If other requirements are met, low MDM supports 99213.

Apply it

If an established-patient encounter documents 24 minutes of qualifying same-day clinician time and time is the selection basis, compare that total with the current CPT interval. Confirm the service and time documentation meet the applicable requirements.

Apply it

For 32 minutes of qualifying time with low MDM, time may support 99214 if it is the selected basis and requirements are met. For 24 qualifying minutes, the 99213 interval applies. Check the current code-year descriptor and documentation.

Apply it

If a note lists many diagnoses but actively manages one, evaluate the work on that condition, the data reviewed or analyzed, and management risk. If selecting by time, document eligible same-day activities and exclude ineligible time.

Apply it

Use the anesthesia record and applicable time rules to resolve differing intervals. Confirm start and stop times, then apply the payer's method for reporting time and units. Maintain a clear record of the interval used for the claim.

Apply it

For example, if two wounds are each debrided through subcutaneous tissue over 12 cm² and 11 cm², combine their 23 cm² for that depth: report 11042 for the first 20 cm² and 11045 for the additional 3 cm². If another wound is debrided to muscle, calculate its area separately rather than adding it to the subcutaneous total. The measurements represent the areas treated, not automatically the full dimensions of every wound.

Apply it

If a screening colonoscopy leads to biopsy or lesion removal, identify the actual technique and sites documented, then apply current CPT instructions and payer rules. Keep the original indication distinct from the procedure ultimately performed.

Apply it

If the report documents frontal and lateral projections, verify that they represent two views and select the corresponding code. Use documented views rather than a guessed default or count of repeat images.

Apply it

If a physician interprets a study performed with facility-owned equipment and issues a report, determine whether the physician should report the professional component with modifier 26 under code and payer rules. Confirm that technical work is reported appropriately.

Apply it

When a facility's equipment and technical staff acquire a study, ensure the technical claim represents the study actually performed and does not include the interpreting physician's separate professional work. Reconcile the claim to the documented reporting arrangement.

Apply it

For example, if a clinically documented change prompts a physician to order another same-day laboratory test and the later result is needed to guide treatment, report the repeated test as instructed by the code and applicable payer rules, appending modifier 91 to the repeat service when appropriate. Keep the order, clinical reason, specimen, and result in the record so the reason for obtaining a subsequent result is clear.

Apply it

Compare each documented test with the current panel definition. If the performed tests meet it, review instructions before separately coding included components. If a required component is absent, select codes describing work actually done rather than assuming the panel was performed.

Apply it

A documented planned second-stage related procedure points to evaluation of modifier 58. An unplanned related return to the operating room points to modifier 78. A genuinely unrelated procedure may support modifier 79. Apply current global-surgery rules and verify the documented circumstances.

Apply it

If the clinician evaluates a new, unrelated condition during the global period, review documentation and payer rules to determine whether a distinct E/M service with modifier 24 is supported. Connect the work to the unrelated condition.

Apply it

For instance, if a surgeon evaluates a patient the day before a planned major procedure, determines during that evaluation that surgery is needed, and documents the decision, the E/M may qualify for modifier 57 under Medicare rules. The 90-day global indicator is the key procedure criterion. Confirm that the service and decision are documented and report the modifier on the qualifying E/M code.

Apply it

If a colonoscopy report documents snare removal of one lesion and biopsy of a different lesion during the same encounter, identify both lesions and the work performed. When the documentation supports separate lesions, report the applicable codes and use 59 or XS to identify the distinct service as allowed by the Medicare edit. For separate encounters, consider 59 or XE under the stated rule.

Apply it

Verify that the code is not already defined as bilateral and check its Medicare indicator. When the general practitioner bilateral surgical rule applies, report one line with modifier 50 and one unit, subject to code-specific instructions and claim requirements.

Apply it

Identify whether the service is surgical or non-surgical, then check code-specific Medicare instructions before choosing modifier 50, RT/LT lines, or units. Apply rules for the actual claim type and billing entity rather than borrowing a different setting's method.

Apply it

If a patient also presents with a separately evaluated condition requiring substantial management beyond the planned procedure, review the record and rules to determine whether a distinct E/M service is supported. Use an appropriate modifier only when criteria are met.

Apply it

For two procedures performed in one session, verify each independently, review the relevant edit and indicator, and document any distinct circumstances needed for separate reporting. Use only modifiers and exceptions permitted by the edit and payer policy.

Apply it

Compare reported units with the applicable MUE and confirm the documentation supports the quantity. Resolve discrepancies under relevant policy rather than changing units solely to avoid an edit. Consider the edit's adjudication method and the claim circumstances.

Apply it

For an uncommon procedure synonym, use the documented action to locate a candidate, verify its complete descriptor and notes in the current Professional Edition, then check relevant edits and payer rules. Seek clarification if the record lacks a necessary distinction.

Apply it

Before reporting an apparent add-on code, verify that the associated primary code is present and eligible under current instructions. Confirm the record supports the added service and that no restriction prevents reporting it with that primary service.

Apply it

For Medicare component billing, apply relevant Medicare guidance while distinguishing it from commercial-payer policy. Check the service descriptor, documentation, payer, and claim setting before submission, and identify which rule is coding versus coverage or payment policy.

Apply it

If an imaging center bills the technical component while a physician group bills interpretation, ensure neither entity reports a global service that includes the other's separately billed work. Match each claim line to the component actually furnished and the applicable arrangement.

Apply it

If a descriptor represents 10 mg per unit and the record documents 35 mg administered, divide 35 mg by 10 mg per unit to obtain the raw unit-equivalent. Then follow payer instructions for reporting and rounding the claim quantity.

Apply it

Reconcile the amount administered with the amount discarded. Apply JW when an eligible discarded amount is documented and policy applies; evaluate JZ when no amount was discarded and policy calls for that reporting. Calculate each quantity using the descriptor's unit definition.

Apply it

If an eligible container holds 60 mg, with 45 mg administered and 15 mg discarded, verify the descriptor's quantity per unit. Calculate administered and discarded unit-equivalents separately, then apply current JW, rounding, and claim-line instructions.

Apply it

For a covered device provided under a documented rental agreement, check the item's code and payer rules, then use RR when appropriate. Ensure the rental period and item match the documentation and the claim's transaction details.

Apply it

If a supplier sells a previously used device rather than renting it, distinguish used-equipment status from rental and confirm payer modifier requirements. Establish whether the transaction is a purchase, rental, or another arrangement before choosing the modifier.

Apply it

If a supplier replaces a wheelchair component while repairing the existing wheelchair, RB may identify replacement of the part. If the entire item is replaced because it was irreparably damaged, RA may apply. Verify facts and payer instructions.

Apply it

If 100 strips are furnished and the applicable descriptor defines one billing unit as 50 strips, divide the supported quantity by 50 to calculate units. Confirm the current descriptor, correct item, and delivery documentation before reporting.

Apply it

If 200 lancets are furnished and the descriptor defines one billing unit as 100 lancets, divide the supported count by 100 to obtain billing units, subject to claim rules. Verify the current code-year descriptor and the actual furnished count.

Apply it

When a clinician performs a procedure and separately furnishes a qualifying drug, evaluate the CPT service and HCPCS drug item independently. Check documentation, descriptors, and payer rules for each reported service or item.

Apply it

If a claim lists several boxes but no clear item count, review the order, delivery record, and HCPCS unit definition before assigning units. Seek clarification when the supported physical quantity cannot be established and retain evidence for the claim.

Apply it

If a supplier provides a device and later furnishes a replacement part during repair, code each item or service as supported and assess whether the repair-part replacement modifier applies to the later transaction. Verify payer instructions.

Apply it

For a delivery containing test strips and lancets, reconcile each physical count separately, divide by its own descriptor-defined quantity per unit, and compare the result with the claim. Verify current descriptors and delivery documentation.

Apply it

For a Medicare DME rental claim, check relevant Medicare modifier definitions and reporting instructions. Confirm that guidance applies to the supplier, item, jurisdiction, and transaction before using it, and separately evaluate coverage requirements.

Apply it

When a vignette supplies the unit definition and documented administered amount, calculate raw units by division. Then evaluate coverage, rounding, and claim instructions separately. Base the calculation on documented administration, not the prescribed dose.