AAPC-CDEO Certified Documentation Expert Outpatient - Set 5 - Part 2

Correct Answer: The default code at the main term

When a condition is documented without additional information such as acute or chronic, the default code is assigned. It is the code listed next to the main term in the Alphabetic Index, representing the most common or unspecified condition. Option b is incorrect because the guidelines do not presume acuity; a condition documented without acute or chronic wording takes the code listed next to the main term, not an assumed form. Option c is incorrect because chronicity is not documented, and nothing in the guidelines lets a coder infer it; the Alphabetic Index entry at the main term governs instead. Option d is incorrect because the guidelines direct a query when medical record documentation conflicts, and this record has no conflict, so the lack of detail alone does not trigger one.

Correct Answer: A secondary code for the bacterial agent

A "use additional code" note at the Tabular List means a secondary code should be added, if known. For bacterial infections outside chapter 1, a code from the bacterial agent categories identifies the causative organism. Option a is incorrect because that describes a "code also" note, which gives no sequencing direction; a "use additional code" note states that the added code follows as secondary. Option b is incorrect because 7th characters are verified in the Tabular List as part of completing a single code, whereas this note calls for a separate additional code. Option d is incorrect because that is the function of a "code first" note, which sequences the underlying condition ahead of the manifestation; a "use additional code" note adds a secondary code instead.

Correct Answer: Query the provider

The guidelines state that code assignment rests on the provider's diagnostic statement that the condition exists. When medical record documentation conflicts, the coder queries the provider instead of choosing between the entries or applying clinical criteria. Option b is incorrect because a default code is assigned when a condition is documented without additional information, such as acute or chronic, not when entries in the record conflict. Option c is incorrect because the guidelines base code assignment on the provider's diagnostic statement and expressly state that it is not based on the clinical criteria used to establish the diagnosis. Option d is incorrect because an unspecified code describes a condition lacking detail; it does not resolve a contradiction, and the guidelines send that problem back to the provider.

Correct Answer: The provider's diagnostic statement

Under the ICD-10-CM general guidelines, code assignment rests on the provider's statement that the condition exists. That statement is sufficient, and the clinical criteria behind the diagnosis do not determine the code. Option a is incorrect because a default code is assigned when a condition is documented without further detail, such as acute or chronic; it does not confirm that the condition exists. Option c is incorrect because symptom and sign codes are acceptable when the provider has not established a definitive diagnosis, but here the provider has documented the condition. Option d is incorrect because the guidelines state that code assignment is not based on the clinical criteria the provider used to establish the diagnosis.

Correct Answer: Coded when present

The guidelines state that additional signs and symptoms that may not be associated routinely with a disease process should be coded when present, because they are not an integral part of that disease process. Option a is incorrect because omission applies to signs and symptoms routinely associated with a disease process, which are not assigned as additional codes unless the classification instructs otherwise. Option b is incorrect because a query is encouraged when documentation is unclear, but the guidelines do not make a query a condition for coding these additional signs and symptoms. Option d is incorrect because unspecified codes are used when clinical information is insufficient for a more specific code, which is a different situation from additional non-integral signs and symptoms.

Correct Answer: additional

Under the guideline for conditions that are an integral part of a disease process, signs and symptoms routinely associated with the disease are not reported as additional codes, unless the classification instructs otherwise. Option b is incorrect because bilateral codes relate to laterality, a separate guideline covering conditions on both sides, and have no bearing on routine signs and symptoms of a disease. Option c is incorrect because the guideline does not address principal diagnosis selection here; it restricts reporting routine signs and symptoms alongside the confirmed disease, which concerns added codes. Option d is incorrect because unspecified codes are acceptable when clinical information is not known; the integral-condition rule is about whether to add symptom codes at all.

Correct Answer: Report the unspecified pneumonia code

A diagnosis of pneumonia was determined, but not its type. Official guidelines state that the appropriate unspecified code is reported when it most accurately reflects what is known, so each encounter is coded to the level of certainty known. Option a is incorrect because conducting medically unnecessary diagnostic testing just to reach a more specific code is described as inappropriate, so this step is not endorsed. Option b is incorrect because the guidelines call it inappropriate to select a specific code that the medical record documentation does not support, even when a specific type seems likely. Option c is incorrect because symptom codes stand in for a definitive diagnosis only when none has been established by the end of the encounter, and here pneumonia was determined.

Correct Answer: As a confirmed diagnosis

Under the official guidelines for borderline diagnosis, a condition documented as borderline is coded as confirmed unless the classification provides a specific entry, such as borderline diabetes, in which case that entry is used. Option b is incorrect because sign and symptom codes are reserved for encounters where no definitive diagnosis has been established, which is a different situation from a documented borderline diagnosis. Option c is incorrect because borderline conditions are stated not to be uncertain diagnoses, so the uncertain-diagnosis convention that depends on care setting does not govern them. Option d is incorrect because unspecified codes apply when clinical information is insufficient for a more specific code, not when the provider documents a borderline diagnosis.

Correct Answer: The noted code is always sequenced before a known causal condition

The note directs that when a causal condition is known, its code is sequenced as the principal or first-listed diagnosis. Placing the noted code ahead of a known causal condition contradicts the guideline, so this statement is the exception. Option a is incorrect because the guideline does say a known causal condition is sequenced as the principal or first-listed diagnosis, so this statement is consistent and not the odd one out. Option b is incorrect because the guideline names a causal condition that is not applicable as a situation where the noted code may be assigned as principal, so this fits. Option d is incorrect because the guideline allows the noted code as principal diagnosis when the causal condition is unknown or not applicable, so this statement is consistent with it.

Correct Answer: Report a second code as a secondary code

ICD-10-CM guidelines state that when a combination code lacks necessary specificity in describing the manifestation or complication, an additional code should be used as a secondary code to supply the missing detail. Option a is incorrect because a sequela is the residual effect after the acute phase has ended, and the documentation does not describe a residual condition. Option b is incorrect because that instruction applies when the combination code fully identifies the conditions involved, and here the code lacks the needed specificity. Option c is incorrect because that sequencing rule covers one condition described as both acute and chronic with separate Alphabetic Index subentries, not a combination code lacking detail.

Correct Answer: Code for the condition or nature of the sequela

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, unless the exception for a following manifestation code applies. Option b is incorrect because the acute phase code is never used together with a late effect code, so it cannot take either position. Option c is incorrect because the guidelines sequence the sequela code second, after the code for the condition or nature of the residual effect. Option d is incorrect because a manifestation code appears only in the exception, where the sequela code is followed by one; it is not the general first-listed code.

Correct Answer: Code for the acute phase of the illness or injury

The ICD-10-CM guidelines state that the code for the acute phase of the illness or injury that led to the sequela is never used with a code for the late effect. Option a is incorrect because this is itself a sequela code, extended at the fourth, fifth or sixth character to carry the manifestation, so the guidelines do not bar it. Option c is incorrect because the guidelines recognize cases where the sequela code is followed by a manifestation code in the Tabular List, so this code can accompany a late effect code. Option d is incorrect because coding of a sequela generally requires this code, and the guidelines sequence it first, ahead of the sequela code, so it is reported with the late effect.

Correct Answer: Sequela

The guidelines define a sequela (late effect) as the residual effect, or condition produced, after the acute phase of an illness or injury has terminated. No time limit applies to when a sequela code can be used. Option b is incorrect because the guidelines describe it as an associated secondary process accompanying a diagnosis within a combination code, rather than the condition remaining once the acute phase has ended. Option c is incorrect because it is a single code classifying two diagnoses, or a diagnosis with a manifestation or complication, not a residual effect left after an acute phase. Option d is incorrect because the guidelines pair it with a diagnosis in a combination code; it is not defined as the residual condition following an ended acute illness or injury.

Correct Answer: Bilateral code

When a bilateral condition is treated one side at a time, the laterality guideline directs assignment of the bilateral code, since the condition still exists on both sides, including for the encounter that treats the first side. Option a is incorrect because separate codes for each side apply only when no bilateral code is provided, and here a bilateral code is available. Option b is incorrect because this code is meant for records where the side is not identified and clarification cannot be obtained, which is not the situation here. Option c is incorrect because the condition still exists on both sides at the first encounter, so a code for only the treated side would understate the condition.

Correct Answer: A complication code is appropriate because the condition altered the course of surgery

Code assignment rests on the provider's documentation of the relationship between the condition and the care. A condition that alters the course of surgery, as documented in the operative report, supports a complication code without the word "complication." Option b is incorrect because the guideline extends to any complications of care, regardless of the chapter in which the code is located. Option c is incorrect because not all conditions that occur during or following care or surgery are complications; a cause-and-effect relationship and clinical significance must be documented. Option d is incorrect because the guidelines state the provider need not explicitly document the term "complication" for a complication code to be reported.

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 repeated documentation does not change the rule; a unique code appears only once for the encounter, even when two conditions classify to it. Option c is incorrect because the guideline limits reporting by encounter, not by the number of providers who document the condition, so extra providers do not permit repeats. Option d is incorrect because the guidelines call for separate left and right codes only when no bilateral code exists, and those are distinct codes, each reported once.

Correct Answer: The condition that led to the surgery

When a patient presents for outpatient surgery and complications require observation, the outpatient guidelines direct that the reason for the surgery is reported first, as the reason for the encounter, followed by the complications as secondary diagnoses. Option a is incorrect because coexisting conditions are listed as additional codes after the first-listed diagnosis, which is the one chiefly responsible for the services provided. Option b is incorrect because the guidelines report complications as secondary diagnoses, following the first-reported diagnosis, so the complication cannot take the first position in this situation. Option d is incorrect because symptom codes are acceptable only when a diagnosis has not been established by the provider, and nothing here makes a symptom the first-reported diagnosis.

Correct Answer: I and III

Chronic diseases treated on an ongoing basis may be reported as many times as the patient receives treatment and care. History codes may serve as secondary codes when the historical condition or family history affects current care. Option a is incorrect because conditions previously treated and no longer exist are not coded as coexisting conditions, so statement II contradicts the guideline on documented coexisting conditions. Option c is incorrect because both statements are wrong: resolved conditions are not coded, and outpatient guidance says to avoid coding diagnoses documented with terms of uncertainty. Option d is incorrect because statement IV fails because probable diagnoses are not coded; the condition is coded to the highest degree of certainty, such as symptoms or signs.

Correct Answer: Two characters

ICD-10-CM guidelines state that the classification is composed of codes with 3, 4, 5, 6 or 7 characters. A two-character code is not among those listed lengths, so it is the exception. Option a is incorrect because the guidelines name seven characters as a code length and state a code is invalid if a required 7th character is missing. Option b is incorrect because a three-character code is the heading of a category and is reported when the category is not further subdivided. Option c is incorrect because five characters appears in the guidelines' list of code lengths, which runs 3, 4, 5, 6 or 7, so it is a valid length.

Correct Answer: List the chiefly responsible condition first, then the coexisting condition

Section IV directs the coder to list first the diagnosis, condition, problem, or other reason for encounter shown to be chiefly responsible for the services provided, then list additional codes for coexisting conditions. Option a is incorrect because documented conditions that coexist and require or affect patient care, treatment or management are coded as additional diagnoses, so omitting it conflicts with the guideline. Option c is incorrect because chronicity does not set sequencing; the guideline places the condition chiefly responsible for the services first and lists coexisting conditions after it. Option d is incorrect because the UHDDS definition of principal diagnosis does not apply to provider-based office visits, where the term first-listed diagnosis is used instead.