AAPC-COC Certified Outpatient Coder - Set 5 - Part 2

Correct Answer: "Code, if applicable, any causal condition first" note

A "Code, if applicable, any causal condition first" note means the code may be principal diagnosis when the causal condition is unknown or not applicable. If a causal condition is known, that condition is sequenced as principal or first-listed. Option b is incorrect because this convention requires two codes to fully describe a single condition affecting multiple body systems, so it is a pairing rule, not a note about unknown causes. Option c is incorrect because it tells the coder to sequence a known underlying condition first when one is present, and it carries no allowance tied to an unknown cause. Option d is incorrect because it directs that a secondary code be added if known, such as an organism code for a bacterial infection, rather than permitting principal diagnosis assignment.

Correct Answer: additional codes

ICD-10-CM guidelines state that signs and symptoms routinely associated with a disease process are integral to it and should not be assigned as additional codes, unless the classification instructs otherwise. Option a is incorrect because unspecified codes are a separate concept, used when clinical information is insufficient for a more specific code, and have no link to integral symptoms. Option c is incorrect because the guideline addresses additional reporting of routine signs and symptoms, not sequencing; it says nothing about restricting them to or from the first-listed position. Option d is incorrect because manifestation codes belong to the etiology/manifestation convention, where two codes describe one condition, and that convention is not the rule on integral symptoms.

Correct Answer: Provider documentation of the relationship to the care

Code assignment for complications of care is based on the provider's documentation of the relationship between the condition and the care or procedure, unless the classification instructs otherwise. Findings that merely follow surgery are not assumed to be complications. Option a is incorrect because the guideline expressly states the provider need not explicitly document the term "complication," for instance when a condition alters the course of surgery. Option b is incorrect because code assignment rests on the provider's documentation of the relationship; a coder's own inference is not the basis the guideline gives. Option d is incorrect because the guidelines state that not all conditions occurring during or following medical care or surgery are classified as complications, so timing alone does not qualify.

Correct Answer: Add a secondary organism code

A "use additional code" note in the Tabular List indicates that a secondary code should be added, if known. For a bacterial infection, the organism code is added as a secondary code to fully describe the single condition. Option a is incorrect because the sequencing rule for "use additional code" is the same as for etiology/manifestation pairs, so the organism code goes second, after the infection. Option b is incorrect because symptom and sign codes are acceptable only when a related definitive diagnosis has not been established, and here the provider documented a confirmed infection and organism. Option c is incorrect because the "use additional code" note directs that a secondary code be added when the organism is known, so stopping at the infection code leaves the condition incompletely described.

Correct Answer: Once

The guideline on reporting the same diagnosis code more than once states that each unique ICD-10-CM diagnosis code may be reported only once for an encounter, including bilateral conditions without distinct laterality codes. Option a is incorrect because the limit is tied to the encounter, not to the number of clinicians who document the condition, so extra clinicians do not permit repeat reporting. Option b is incorrect because body systems do not change the limit; a code that is already reported stays reported once, even for two conditions classified to the same code. Option d is incorrect because the guidelines apply the once-only limit to bilateral conditions too when no distinct codes identify laterality, so a second report is not allowed.

Correct Answer: Condition or nature of the sequela first, sequela code second

The sequela guideline states that coding of a sequela generally requires two codes: the condition or nature of the sequela is sequenced first, and the sequela code is sequenced second. A deviated septum due to a nasal fracture is a listed example. Option b is incorrect because the guidelines set a specific order for sequela coding rather than leaving sequencing to provider preference or to the coder's discretion. Option c is incorrect because the code for the acute phase of an illness or injury that led to the sequela is not used with a code for the late effect. Option d is incorrect because this reverses the guideline order, which places the residual condition first and the sequela code second, except where a manifestation code follows the sequela code.

Correct Answer: Assign the code for the unspecified side

ICD-10-CM guidelines state that if the side is not identified in the medical record, the code for the unspecified side is assigned. Unspecified-side codes should rarely be used, only when documentation is insufficient and clarification cannot be obtained. Option a is incorrect because the guidelines do not tell the coder to choose a side by default; a specific side must come from the record. Option b is incorrect because that step applies when the condition is known to be bilateral and no bilateral code exists, not when the side is missing. Option c is incorrect because this code describes a condition documented on both sides, which a record with no side identified does not support.

Correct Answer: Working diagnosis

The outpatient guidelines list "working diagnosis" with "probable," "suspected," "questionable," "rule out," "compatible with" and "consistent with" as uncertainty terms. Such diagnoses are not coded; the coder reports symptoms, signs or abnormal findings instead. Option b is incorrect because this indicates the provider has established the diagnosis, so no uncertainty exists and the condition may be reported. Option c is incorrect because the guidelines direct coders to report a confirmed or definitive diagnosis, so this term marks certainty rather than a condition to leave uncoded. Option d is incorrect because this describes the nature of a condition, and the guidelines allow chronic diseases under ongoing treatment to be coded each time the patient receives care.

Correct Answer: Sequencing any one of them first

When two or more diagnoses equally meet the criteria for principal diagnosis by circumstances of admission, workup and therapy, and no Alphabetic Index, Tabular List or other guideline directs sequencing, any one of the diagnoses may be sequenced first. Option a is incorrect because that guideline covers rare cases where the provider documents contrasting diagnoses with either/or wording, not diagnoses that equally meet the principal diagnosis criteria. Option b is incorrect because that rule belongs to admissions for treatment of a complication resulting from surgery or other medical care, which is a different situation from equally qualifying diagnoses. Option d is incorrect because symptom, sign and ill-defined condition codes from Chapter 18 are not used as principal diagnosis when a related definitive diagnosis has been established.

Correct Answer: The separate condition that prompted inpatient admission

For admission from outpatient surgery at the same hospital, when the reason for inpatient admission is another condition unrelated to the surgery, that unrelated condition is assigned as the principal diagnosis under the Section II guidelines. Option a is incorrect because this is assigned only when no complication or other condition is documented as the reason for the inpatient admission, which is not the situation here. Option b is incorrect because free choice of sequencing belongs to contrasting or comparative diagnoses documented as either/or, not to a documented admission reason that is clearly separate. Option c is incorrect because a complication becomes principal only when it is the documented reason for admission, and the provider here documents no complication at all.

Correct Answer: Condition that prompted the outpatient surgery

When a patient is admitted from the same hospital's outpatient surgery department and no complication or other condition is documented as the cause of admission, the guideline directs assigning the reason for the outpatient surgery as principal diagnosis. Option b is incorrect because a complication becomes principal only when it is documented as the cause of the inpatient admission, and none is documented in this situation. Option c is incorrect because aftercare sequencing appears in the rehabilitation guideline for admissions whose purpose is rehabilitation, not in the outpatient surgery admission guideline. Option d is incorrect because an unrelated condition is sequenced first only when documented as the cause of admission, so it cannot be assumed when nothing is documented.

Correct Answer: Occasioning the hospital admission

The UHDDS defines principal diagnosis as the condition established after study to be chiefly responsible for occasioning the admission of the patient to the hospital for care. The circumstances of inpatient admission always govern this selection. Option a is incorrect because resource consumption appears nowhere in the definition; the guidelines say the circumstances of inpatient admission govern selection, so the focus is on why the patient was admitted. Option b is incorrect because the UHDDS definition ties principal diagnosis to the reason the patient came into the hospital, and it says nothing about how long the stay lasts. Option d is incorrect because a procedure is not part of the UHDDS wording, and the guidelines treat therapy provided as only one circumstance to weigh alongside the admission itself.

Correct Answer: Report an aftercare code when rehabilitation follows active treatment of an injury

The rehabilitation guideline excludes injuries from the aftercare instruction. Rehabilitation following active treatment of an injury is reported with the injury code carrying the seventh character for subsequent encounter, not with an aftercare code. Option a is incorrect because the guideline gives exactly this instruction for rehabilitation following active treatment of an injury, illustrated by rehabilitation after hip replacement for a femur fracture. Option c is incorrect because the guideline directs the appropriate aftercare code in that situation, and the injury exception is part of the same rule, so the statement matches it. Option d is incorrect because this is the core instruction of the rehabilitation guideline, which directs that the condition being treated by the rehabilitation service be sequenced first.

Correct Answer: Do not code it unless clinical significance is indicated

Under Section III.B of the ICD-10-CM guidelines for non-outpatient settings, abnormal findings such as laboratory, x-ray or pathologic results are not coded and reported unless the provider indicates their clinical significance. Option a is incorrect because a result outside the normal range is not enough by itself; the guidelines require the provider to indicate clinical significance before the finding is coded and reported. Option b is incorrect because the uncertain diagnosis guideline covers conditions documented at discharge with terms such as probable or suspected, not a laboratory result with no provider comment. Option c is incorrect because previous conditions are resolved diagnoses or status-post procedures from earlier admissions, which is a different category from a current abnormal test result.

Correct Answer: Clinical evaluation

Section III interprets other diagnoses as additional clinically significant conditions affecting patient care by requiring clinical evaluation, therapeutic treatment, diagnostic procedures, extended length of hospital stay, or increased nursing care and/or monitoring. Option a is incorrect because abnormal findings are not coded or reported unless the provider indicates their clinical significance, so a result by itself does not qualify. Option b is incorrect because diagnoses relating to an earlier episode with no bearing on the current hospital stay are excluded rather than treated as a criterion for reporting. Option d is incorrect because hospital policy is mentioned only as a reason to code resolved conditions from previous admissions, not as part of the definition of other diagnoses.

Correct Answer: General medical examination code with abnormal finding listed first

Section IV directs that when a general medical examination results in an abnormal finding, the examination code with abnormal finding is the first-listed diagnosis. A secondary code for the abnormal finding is also reported. Option b is incorrect because the guidelines direct that the examination code reporting abnormal findings be first-listed, with a secondary code for the finding, so this reverses the required order. Option c is incorrect because the guidelines say not to code related signs and symptoms as additional diagnoses, and a symptom is not the first-listed diagnosis for this examination. Option d is incorrect because the examination subcategories offer codes with and without abnormal findings, and a newly identified condition calls for the with-abnormal-findings code instead.

Correct Answer: First-listed diagnosis

Section IV states that in the outpatient setting the term first-listed diagnosis is used in lieu of principal diagnosis, because the UHDDS principal diagnosis definition does not apply to outpatient services or office visits. Option a is incorrect because the guidelines use additional codes for coexisting conditions that follow the main reason for the visit, not for the one listed first. Option b is incorrect because the guidelines list it among uncertainty terms that are not coded in outpatient reporting, so it names no sequencing position. Option c is incorrect because it is the inpatient term, and the UHDDS definition behind it does not apply to hospital-based outpatient services or provider-based office visits.

Correct Answer: Code the cough to the highest degree of certainty

Outpatient guidelines prohibit coding diagnoses documented as "rule out" or similar uncertain terms. The coder reports the condition to the highest degree of certainty for that encounter, such as the symptom, sign, or other reason for the visit. Option a is incorrect because the guidelines already direct coding to the highest degree of certainty, which here is the documented symptom, so no code is withheld. Option b is incorrect because history codes apply to conditions that no longer exist but affect current care, while this cough is a current complaint that prompted the visit. Option d is incorrect because diagnoses documented with terms such as "rule out" are not coded in the outpatient setting; that practice belongs to inpatient hospital reporting.

Correct Answer: Treated as present on admission

POA is defined as present at the time the order for inpatient admission occurs. Conditions that develop during an outpatient encounter, including emergency department, observation or outpatient surgery, are therefore considered present on admission. Option a is incorrect because U applies when documentation is insufficient to determine POA status, but here the provider has clearly documented the condition, so nothing is left undetermined. Option c is incorrect because the exempt list covers circumstances of the encounter or conditions always present on admission, not a diagnosis that arose during the emergency department stay. Option d is incorrect because the N indicator means not present at the time of inpatient admission, and conditions arising during the emergency department encounter fall before that point.

Correct Answer: A historical condition that influences current treatment

Outpatient guidelines direct coders to report coexisting conditions that require or affect care. History codes may serve as secondary codes when the historical condition or family history affects current care or influences treatment. Option b is incorrect because this wording signals uncertainty, so outpatient guidelines direct coding the signs, symptoms or abnormal findings instead of the stated diagnosis. Option c is incorrect because probable diagnoses are not coded in the outpatient setting; the coder reports symptoms, signs or other findings to the highest degree of certainty. Option d is incorrect because outpatient guidelines exclude conditions that were previously treated and no longer exist unless they affect current care or influence treatment.