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Question 1Medical Coding
A physician documents a diagnosis of acute systolic heart failure and also lists chronic systolic heart failure. How should the coder report these two conditions?
- Query the physician before assigning any code
- Code only the chronic systolic heart failure
- Code only the acute systolic heart failure Correct answer.
- Code both the acute and chronic systolic heart failure
Explanation
When a patient has both acute and chronic forms of the same heart failure type, coding guidelines direct the coder to report only the acute condition, because the acute form is the focus of care and the chronic form is considered integral to it.
Question 2Medical Coding
Which element of the medical record is the primary source the coder uses to assign diagnosis codes?
- The patient's prior authorization paperwork
- The laboratory and imaging reports
- The nursing intake assessment form
- The physician's documented diagnostic statements Correct answer.
Explanation
Coders assign diagnosis codes based on the provider's documented diagnostic statements in the health record. Other sources such as lab results or nursing notes may support or clarify but cannot substitute for the physician's diagnosis.
Question 3Medical Coding
In ICD-10-CM, what does the seventh character in an injury code typically indicate?
- The anatomical side affected
- The episode of care Correct answer.
- The severity of the injury
- The external cause of injury
Explanation
For injury and poisoning codes, the seventh character is an extension that identifies the episode of care, such as initial encounter, subsequent encounter, or sequela. This character is required for the code to be valid.
Question 4Medical Coding
A patient is seen for a laceration and the provider documents a foreign body in the wound. What additional coding concept applies?
- An additional code for the retained foreign body Correct answer.
- A single code that combines both conditions
- No additional code because the wound is the focus
- A code from the external cause section only
Explanation
When a foreign body is present in an open wound, coding guidance directs assignment of an additional code to identify the foreign body in addition to the wound code. Both elements are reported to fully describe the encounter.
Question 5Medical Coding
A coder is reviewing a record where the physician documents "possible pneumonia." How should this be coded in an outpatient setting?
- Do not code the condition; code only confirmed diagnoses Correct answer.
- Code the signs and symptoms instead and query later
- Code pneumonia with a query flag attached
- Code pneumonia as if confirmed
Explanation
In outpatient coding, uncertain diagnoses such as "possible," "probable," or "rule out" are not coded as confirmed conditions. Instead, the coder reports the signs and symptoms that prompted the visit.
Question 6Medical Coding
Which coding convention directs the coder to use an additional code to provide more detail when available?
- "Use additional code" Correct answer.
- "Code first"
- "Excludes1"
- "See also"
Explanation
The instructional note "use additional code" tells the coder that another code should be assigned, when applicable, to fully describe the condition. It signals supplementary detail rather than a required sequencing rule.
Question 7Medical Coding
What is the purpose of the Alphabetic Index in ICD-10-CM coding?
- To replace the Tabular List for simple diagnoses
- To locate candidate codes that are then verified in the Tabular List Correct answer.
- To provide reimbursement rates for each code
- To list only external cause codes
Explanation
The Alphabetic Index is used to find potential codes based on the documented term, but every code must be verified in the Tabular List for complete description and instructional notes. The Tabular List is the authoritative source.
Question 8Medical Coding
A patient with diabetes develops diabetic chronic kidney disease. How are these conditions coded according to ICD-10-CM guidance?
- Only the diabetes code
- A combination code for diabetes with kidney complication Correct answer.
- Separate codes for diabetes and kidney disease only
- Only the kidney disease code
Explanation
ICD-10-CM provides combination codes for diabetes with associated complications, including kidney disease. The coder assigns the combination code that captures both the diabetes and the renal manifestation.
Question 9Medical Coding
Which organization publishes the Official Guidelines for Coding and Reporting that govern ICD-10-CM use?
- The Joint Commission
- The four cooperating parties including CMS and CDC Correct answer.
- The American Medical Association alone
- The state insurance commissioner
Explanation
The ICD-10-CM Official Guidelines are developed and approved by the four cooperating parties: CMS, CDC/NCHS, AHIMA, and AHA. They provide the national rules coders follow.
Question 10Medical Coding
When a patient presents with a symptom and the provider documents a definitive diagnosis related to that symptom, how should the coder proceed?
- Code the definitive diagnosis rather than the symptom Correct answer.
- Query the provider to confirm the symptom
- Code both the symptom and the diagnosis
- Code only the symptom that prompted the visit
Explanation
When a definitive diagnosis is established and documented, the coder reports that diagnosis instead of the presenting symptom. Symptoms that are integral to a confirmed diagnosis are not coded separately.
Question 11Medical Coding
What does the "Excludes1" note indicate in the ICD-10-CM Tabular List?
- The excluded code should always be added
- The condition is a manifestation only
- The code is invalid for outpatient use
- The two conditions cannot be coded together Correct answer.
Explanation
An Excludes1 note indicates that the excluded code cannot be reported together with the code under which the note appears, because the conditions are mutually exclusive. Coders must select the correct code rather than reporting both.
Question 12Medical Coding
A coder is assigning a code for a neoplasm. What must be determined first to select the correct code?
- Whether the neoplasm is malignant, benign, or of uncertain behavior Correct answer.
- The provider's specialty
- Whether the patient has insurance coverage
- The patient's length of stay
Explanation
Neoplasm coding requires identifying the behavior of the neoplasm, such as malignant, benign, in situ, or uncertain behavior, because each has a distinct code category. The anatomic site is also required.
Question 13Medical Coding
How is a sequela (late effect) of an injury coded?
- Code the original injury only
- Code the residual condition first, followed by the cause of the sequela Correct answer.
- Code the residual condition only
- Code the external cause only
Explanation
For sequelae, the residual condition or nature of the late effect is sequenced first, followed by the code for the cause of the sequela. The seventh character for sequela is applied to the injury code.
Question 14Medical Coding
What is the correct action when documentation is ambiguous and the coder cannot determine the appropriate code?
- Query the provider for clarification Correct answer.
- Assign the code with the highest reimbursement
- Select the first code listed in the index
- Leave the diagnosis blank on the claim
Explanation
When documentation is insufficient or ambiguous, the coder should query the provider to obtain clarification before assigning a code. This ensures accurate and compliant coding.
Question 15Medical Coding
In ICD-10-CM, what does the placeholder character "X" represent in certain codes?
- An unspecified diagnosis
- A bilateral condition
- A code that is never billable
- A character reserved to maintain code length and allow future expansion Correct answer.
Explanation
The placeholder X is used in some codes to fill a character position so the code maintains its required length and the seventh character can occupy the correct position. It does not add clinical meaning.
Question 16Medical Coding
A patient is admitted with sepsis due to a documented infection. According to coding guidelines, how is sepsis coded when the organism is identified?
- Code only the organism
- Code only the infection site
- Code sepsis first, then the specific infection, then the organism Correct answer.
- Code the organism first, then sepsis
Explanation
When sepsis is present with a localized infection and an identified organism, the sepsis code is sequenced first, followed by the code for the localized infection and then the organism code. This reflects the severity and focus of care.
Question 17Medical Coding
What is the role of the Tabular List in ICD-10-CM?
- It lists only the external cause codes
- It serves only as an alphabetical lookup
- It provides the complete code descriptions, notes, and instructional guidance Correct answer.
- It contains billing fee schedules
Explanation
The Tabular List organizes codes by body system and provides full descriptions, instructional notes, and conventions. It is the authoritative reference that must be consulted to verify every code.
Question 18Medical Coding
A patient with hypertension also has documented heart failure. How does ICD-10-CM direct coding of these two conditions?
- Use a combination code for hypertensive heart disease Correct answer.
- Code hypertension and heart failure separately
- Code only the heart failure
- Code only the hypertension
Explanation
ICD-10-CM presumes a causal relationship between hypertension and heart failure, and a combination code for hypertensive heart disease is assigned. Separate codes are not used when the combination code applies.
Question 19Medical Coding
What is the principal diagnosis in an inpatient setting?
- The condition established after study to be chiefly responsible for the admission Correct answer.
- The most severe secondary condition
- The first condition the patient mentioned
- The condition with the highest reimbursement
Explanation
The principal diagnosis is defined as the condition established after study to be chiefly responsible for occasioning the admission. It is determined from the provider's documentation and clinical findings.
Question 20Medical Coding
When coding an encounter for chemotherapy, what sequencing applies?
- Code only the chemotherapy administration
- Code the encounter for chemotherapy first, then the malignancy Correct answer.
- Code only the malignancy
- Code the malignancy first, then chemotherapy
Explanation
When the encounter is specifically for chemotherapy, the Z code for the chemotherapy encounter is sequenced first, followed by the code for the malignancy being treated. This reflects the reason for the encounter.
Question 21Medical Coding
What does the term "laterality" refer to in ICD-10-CM coding?
- Whether the condition affects the right or left side of the body Correct answer.
- The external cause of the condition
- The severity grade of the condition
- How long the condition has existed
Explanation
Laterality indicates whether a condition involves the right or left side of the body. Many ICD-10-CM codes require a laterality character to fully describe the condition.
Question 22Medical Coding
A coder sees the abbreviation "NOS" in a code title. What does it signify?
- No other symptoms, indicating an asymptomatic patient
- Not otherwise sequenced, indicating a sequencing rule
- Normal organ system, indicating a healthy finding
- Not otherwise specified, indicating an unspecified condition Correct answer.
Explanation
NOS stands for "not otherwise specified" and indicates that the documentation does not provide enough detail to assign a more specific code. It is used when the condition is described without sufficient specificity.
Question 23Medical Coding
How should a coder handle a code that the Tabular List marks as requiring an additional character for validity?
- Substitute a similar code from the index
- Assign the code without the extra character
- Report the code as unspecified automatically
- Assign the code only when the additional character is available and supported Correct answer.
Explanation
Codes that require an additional character are invalid without it, so the coder must assign the complete code with the supported character. If the documentation does not support a valid character, clarification may be needed.
Question 24Medical Coding
What is the purpose of an external cause code in ICD-10-CM?
- To describe the anatomical injury itself
- To indicate the patient's occupation
- To identify the cause, intent, and place of occurrence of an injury Correct answer.
- To report the provider's diagnosis of disease
Explanation
External cause codes describe how and where an injury or condition occurred, including intent and place of occurrence. They supplement the injury code rather than replace it.
Question 25Medical Coding
A patient is seen for follow-up of a healed fracture. Which seventh character applies to the injury code?
- The character for sequela
- The character for subsequent encounter Correct answer.
- The character for initial encounter
- No seventh character is required
Explanation
A follow-up visit for a healing or healed injury during the treatment phase is coded with the subsequent encounter character. The sequela character applies only to residual conditions after the acute phase is complete.
Question 26Medical Coding
A coder is selecting a code from ICD-10-CM and finds a note in the Tabular List reading "code also." What does this instruction tell the coder?
- The note replaces the need for a seventh character
- An additional code should be assigned if applicable to fully describe the encounter Correct answer.
- The coder must query the physician before assigning any code
- The listed code may be used only when no other code exists
Explanation
A "code also" note is a directive to report an additional code when the documented condition is present, because the combination gives a more complete picture of the encounter. It is not optional in the sense of being ignored; it applies whenever the second condition exists.
Question 27Medical Coding
In ICD-10-CM, which character position is reserved for the seventh character (episode of care) in codes that require it?
- The final character Correct answer.
- The fifth character
- The first character
- The character immediately after the decimal
Explanation
When a code requires a seventh character, that character occupies the last position of the code, even when placeholder X characters must be inserted to preserve the position. The placeholder keeps the seventh character in its proper slot.
Question 28Medical Coding
A coder assigns a code from Chapter 19 of ICD-10-CM for a patient with a healing ankle sprain. Which element must accompany the injury code to fully describe the encounter?
- A code for the patient's occupation
- A code for the type of health insurance
- A code for the facility where care was delivered
- A code for the external cause of the injury Correct answer.
Explanation
Injury, poisoning, and certain other consequence codes are generally accompanied by an external cause code that identifies how and where the event occurred. This pairing supports injury surveillance and complete documentation of the circumstance.
Question 29Medical Coding
What does the abbreviation "NEC" mean when it appears in an ICD-10-CM code title?
- The condition is not elsewhere classifiable and the code may be used when a more specific code is unavailable Correct answer.
- The condition is never to be coded in the outpatient setting
- The code has been deleted from the current revision
- The code requires a mandatory seventh character
Explanation
NEC stands for "not elsewhere classifiable" and signals that no more specific code exists for the documented condition. It contrasts with NOS, which means the documentation itself lacks specificity.
Question 30Medical Coding
A coder is coding a patient encounter for a condition that is documented as "probable" in the outpatient setting. How should this be handled according to ICD-10-CM outpatient guidelines?
- Code the symptom or reason for the visit instead of the probable condition Correct answer.
- Code the probable condition as though it were confirmed
- Query the patient directly to confirm the diagnosis
- Assign a sign and symptom code plus the probable condition code
Explanation
In the outpatient setting, diagnoses documented as probable, suspected, or rule-out are not coded as confirmed conditions. The coder instead reports the signs, symptoms, or other reason for the visit that the provider documented.
Question 31Medical Coding
A patient is seen with acute bronchitis and the provider also documents chronic obstructive pulmonary disease with acute exacerbation. Using ICD-10-CM guidance, how should these be coded?
- Only the acute bronchitis code
- Both codes, with acute bronchitis sequenced first
- Only the COPD with acute exacerbation code
- Both codes, with COPD with acute exacerbation sequenced first Correct answer.
Explanation
ICD-10-CM provides a combination code for COPD with acute exacerbation, and when bronchitis is also documented the guidance directs reporting both conditions with the COPD code sequenced first. The combination code captures the chronic disease and its acute worsening.
Question 32Medical Coding
A coder must assign a code for a pressure ulcer and the documentation specifies the site as the sacrum and the stage as stage 3. Which coding principle governs the selection?
- Only the stage is coded and the site is omitted
- The stage is reported only when the wound is infected
- The site code alone fully describes the ulcer
- The stage is captured in a separate seventh character or stage code depending on the code structure Correct answer.
Explanation
Pressure ulcer codes require both the anatomic site and the stage, and the code structure captures stage either through a distinct code or a required character. Assigning only one element leaves the diagnosis incompletely described.
Question 33Medical Coding
A patient with type 2 diabetes is documented as having diabetic peripheral neuropathy. How does ICD-10-CM direct the coder to report these conditions?
- Code only the diabetes because the neuropathy is a symptom
- Code only the neuropathy because it is the presenting problem
- Assign the combination code for diabetes with neurologic complication Correct answer.
- Code diabetes and neuropathy as two unrelated conditions
Explanation
ICD-10-CM presumes a cause-and-effect relationship between diabetes and certain complications such as neuropathy when the provider documents both together. A combination code describing diabetes with neurologic complication is therefore assigned.
Question 34Medical Coding
A coder is reviewing a record for a patient admitted with dehydration and also documented with acute kidney injury. The provider links the kidney injury to the dehydration. Which coding approach applies?
- Code acute kidney injury only
- Code both conditions, sequencing dehydration first as the principal diagnosis Correct answer.
- Code dehydration only
- Code both conditions, sequencing acute kidney injury first
Explanation
When the provider links the kidney injury to the dehydration, both conditions are coded and the condition chiefly responsible for admission is sequenced as principal. The dehydration is the underlying cause described by the provider, so it is reported first.
Question 35Medical Coding
A coder is assigning a code for a neoplasm and the record documents that the patient is receiving care for a metastatic lesion in the lung with an unknown primary site. How should the coder proceed?
- Code a personal history code for the lung lesion
- Code only the primary site code from the index
- Code the lung neoplasm as primary because it is the treated site
- Code the lung neoplasm as secondary and code the unknown primary site Correct answer.
Explanation
Metastatic lesions are coded as secondary neoplasms, and when the primary site is documented as unknown, the code for unknown primary site is also reported. The treatment site does not determine whether a neoplasm is primary or secondary.
Question 36Medical Coding
A patient is seen in the emergency department for chest pain and the provider documents no definitive diagnosis after evaluation. How should the coder report the encounter?
- Code an unspecified cardiac condition
- Code a rule-out myocardial infarction
- Code a personal history of cardiac disease
- Code the chest pain as the reason for the encounter Correct answer.
Explanation
When no definitive diagnosis is established in the outpatient or emergency setting, the coder reports the sign or symptom that prompted the encounter. Chest pain is documented and is appropriate to code as the reason for the visit.
Question 37Medical Coding
A coder notices that a code in the Tabular List is followed by a note indicating the code is a manifestation code. What does this mean for code assignment?
- The manifestation code is sequenced first and the etiology code second
- The etiology code is sequenced first and the manifestation code second Correct answer.
- Only the manifestation code is reported
- Only the etiology code is reported
Explanation
Manifestation codes describe the organ or system affected by an underlying condition and are never sequenced as the principal or first-listed diagnosis. The underlying etiology is reported first, followed by the manifestation code.
Question 38Medical Coding
A coder is assigning a code for a patient with a documented fracture that is being seen during the healing phase, and the record indicates routine healing. Which seventh-character concept applies?
- The encounter is coded as a sequela regardless of healing status
- The seventh character reflects the patient's age at the time of injury
- The seventh character reflects the episode of care and healing status of the fracture Correct answer.
- The seventh character reflects the external cause of the fracture
Explanation
For fracture codes, the seventh character identifies the episode of care, such as initial encounter, subsequent encounter, or sequela, and for subsequent encounters it also conveys healing status. The character does not describe age or external cause.
Question 39Medical Coding
A coder is assigning a code for a patient with chronic systolic heart failure and documented hypertension, and the record does not state that the heart failure is due to the hypertension. How should these conditions be reported?
- Code hypertension and heart failure as unrelated conditions Correct answer.
- Assign the combination code for hypertensive heart failure with heart failure
- Code only the hypertension
- Code only the heart failure
Explanation
A causal link between hypertension and heart failure is not presumed by ICD-10-CM; it must be documented by the provider. Without that linkage, the two conditions are reported as separate codes rather than a combination code.
Question 40Medical Coding
A coder is assigning a code for a condition documented as "acute on chronic" when the classification provides a combination code for that exact wording. Which principle supports using the combination code?
- A combination code that fully identifies the documented condition should be assigned Correct answer.
- Each term should be coded separately to maximize detail
- The chronic term is always sequenced before the acute term
- The coder should query the physician to choose one term
Explanation
ICD-10-CM instructs coders to assign a combination code when it fully identifies all elements of the documented condition. Coding the terms separately would fragment a single diagnosis that the classification already captures.
Question 41Medical Billing and Insurance
Under Medicare Part B, which amount is the beneficiary typically responsible for after the annual deductible is met for a covered physician service?
- The full allowed charge
- A fixed copayment of $50 per visit
- Nothing, since Part B covers 100%
- A 20% coinsurance on the allowed amount Correct answer.
Explanation
Medicare Part B generally pays 80% of the approved amount for covered services after the annual deductible is satisfied, leaving the beneficiary responsible for the remaining 20% coinsurance. This coinsurance applies unless the patient has supplemental coverage such as a Medigap plan or Medicaid.
Question 42Medical Billing and Insurance
A patient presents a card showing both a primary and a secondary insurer. Which rule most commonly determines which plan pays first when the patient is the policyholder on both plans?
- The birthday rule applies to the subscriber
- The plan with the lower deductible pays first
- The plan the patient has held longer pays first Correct answer.
- The plan with the higher premium pays first
Explanation
When the same person is the subscriber on two group plans, the coordination of benefits rule generally makes the plan that has covered the person longer the primary payer. The birthday rule instead applies to dependent children covered under both parents' plans.
Question 43Medical Billing and Insurance
Which identifier did HIPAA administrative simplification introduce to replace the use of multiple legacy health plan numbers on electronic transactions?
- Social Security Number
- Employer Identification Number
- Health Plan Identifier Correct answer.
- National Provider Identifier
Explanation
HIPAA adopted standard identifiers for use in electronic transactions, and the Health Plan Identifier was created to identify health plans consistently. This reduces reliance on the many legacy plan numbers that varied by payer.
Question 44Medical Billing and Insurance
A claim is submitted with a diagnosis code that the payer's edit considers inconsistent with the procedure performed. What is the most likely initial payer response?
- Pay the claim at the contracted rate
- Forward the claim to the patient's secondary plan
- Adjust the diagnosis code automatically
- Deny or reject the line as a coding conflict Correct answer.
Explanation
Payers run claims through edits that check whether the diagnosis supports the procedure, and a mismatch typically produces a denial or line-level rejection. The practice must review the documentation and correct or appeal rather than expecting the payer to fix the code.
Question 45Medical Billing and Insurance
Which element is essential on a completed CMS-1500 claim form to identify the specific service rendered on a single date?
- The referring provider's taxonomy code
- The procedure code with the date of service Correct answer.
- The patient's employer name
- The patient's marital status
Explanation
The CMS-1500 captures each service through procedure codes paired with the date of service in the service lines. These two data elements let the payer price and adjudicate the specific encounter.
Question 46Medical Billing and Insurance
A provider agrees to accept a payer's allowed amount as payment in full and to bill the patient only for coinsurance and deductible. What is this arrangement called?
- Participating provider agreement Correct answer.
- Charge capture
- Balance billing
- Global billing
Explanation
A participating provider contract obligates the provider to accept the negotiated allowed amount and to collect only the patient's cost-sharing. Writing off the difference between the charge and the allowed amount is a core term of network participation.
Question 47Medical Billing and Insurance
In Medicare's resource-based relative value scale, which component reflects malpractice insurance expense associated with a service?
- Work relative value unit
- Professional liability relative value unit Correct answer.
- Practice expense relative value unit
- Conversion factor
Explanation
The RBRVS formula combines work, practice expense, and professional liability relative value units, each weighted by geographic adjustment. The professional liability component specifically captures malpractice cost.
Question 48Medical Billing and Insurance
A patient's deductible has not been met and the service is a covered benefit. How should the practice typically handle the claim?
- Bill the patient the full charge immediately and skip the payer
- Submit the claim to the payer and bill the patient after the explanation of benefits Correct answer.
- Hold the claim until the deductible is met next year
- Write off the charge as charity care
Explanation
Claims for covered services must still be submitted so the payer can apply the amount to the deductible and issue an explanation of benefits. The patient is then billed for the deductible amount based on the payer's determination.
Question 49Medical Billing and Insurance
Which statement best describes the purpose of the remittance advice in the revenue cycle?
- It serves as the provider's informed consent form
- It documents payer adjudication and payment details for posting and reconciliation Correct answer.
- It replaces the medical record as legal documentation
- It authorizes the patient to schedule a follow-up visit
Explanation
The remittance advice explains how each claim line was adjudicated, including allowed amounts, payments, and adjustments. Staff use it to post payments and to reconcile expected reimbursement against actual payment.
Question 50Medical Billing and Insurance
A payer returns a claim before any adjudication because the patient's member ID is missing. What is this type of response called?
- A coordination of benefits denial
- A front-end rejection Correct answer.
- A post-payment audit
- A clean claim denial
Explanation
Front-end rejections occur when the claim fails basic validation, such as missing identifiers or malformed data, before the payer adjudicates it. The practice can correct and resubmit without a formal appeal.