AAPC-CDEO Certified Documentation Expert Outpatient - Set 5 - Part 3

Correct Answer: The Alphabetic Index

The outpatient guidelines call it the most critical rule to begin the search for the correct code assignment through the Alphabetic Index. Starting initially in the Tabular List leads to coding errors. Option b is incorrect because chapter-specific guidelines apply alongside the conventions and general guidelines, but they do not name the first step of locating a code. Option c is incorrect because symptom codes are acceptable only when a diagnosis has not been established by the provider; they are not a starting point for every search. Option d is incorrect because the outpatient guidelines warn that beginning the search in the Tabular List leads to coding errors, so it is not where the search starts.

Correct Answer: 7th

Under the Level of Detail guideline, a code is invalid unless coded to the full number of characters required, which includes the 7th character where one applies. Codes may have 3 to 7 characters. Option a is incorrect because a fifth character is one possible level of subdivision, yet the guideline names a later position as the one that must be included when it applies. Option b is incorrect because the fourth character is one of several subdivisions that add specificity, but the guideline singles out a different final character for validity. Option c is incorrect because three-character codes are category headings, and a three-character code is used only when the category is not further subdivided, so it is not the character named here.

Correct Answer: The postoperative diagnosis

For ambulatory surgery, the guidelines direct coding the diagnosis for which the surgery was performed. If the postoperative diagnosis is known to differ at the time of confirmation, it is selected because it is the most definitive. Option a is incorrect because a symptom is coded only when no diagnosis has been established; here a more definitive diagnosis is available after the procedure. Option c is incorrect because chronic conditions may be added as additional diagnoses, but the guideline does not make them the diagnosis chosen for the surgery. Option d is incorrect because it is the diagnosis before surgery, and the guideline directs selection of a different, confirmed diagnosis once the postoperative finding is known to differ.

Correct Answer: Confirmed or definitive diagnoses documented in the interpretation

When a physician has interpreted an outpatient diagnostic test and the final report is available at coding, the coder reports any confirmed or definitive diagnosis documented in the interpretation. Related signs and symptoms are not added. Option a is incorrect because diagnoses documented as probable or suspected indicate uncertainty, and outpatient guidelines direct that such terms are not coded as established diagnoses. Option b is incorrect because a rule-out term reflects uncertainty, so the condition is coded to the highest degree of certainty, such as a sign, symptom or abnormal result. Option c is incorrect because the guidelines state that related signs and symptoms are not coded as additional diagnoses when a definitive diagnosis appears in the interpretation.

Correct Answer: The appropriate Z code for the service

The only exception to the therapeutic-services rule applies when chemotherapy or radiation therapy is the primary reason for the encounter. The appropriate Z code for the service is listed first, and the diagnosis treated is listed second. Option a is incorrect because that rule belongs to ambulatory surgery, where a known postoperative diagnosis that differs from the preoperative one is selected for coding. Option c is incorrect because chronic conditions are reported only as additional diagnoses and do not take the first-listed position in a therapeutic-only encounter. Option d is incorrect because the diagnosis or problem being treated is listed second in this exception, after the Z code that describes the service itself.

Correct Answer: The reason for the surgery

For outpatient surgery (same day surgery), the reason for the surgery is coded as the first-listed diagnosis, the reason for the encounter, even if the surgery is not performed due to a contraindication. Option a is incorrect because that sequencing applies to patients receiving preoperative evaluations only, whereas this patient presented for the surgery itself on the day of the encounter. Option b is incorrect because chronic conditions may be reported as additional diagnoses, but they do not take first position when a specific reason for the surgery exists. Option c is incorrect because the guideline directs coders to the reason for the surgery even when a contraindication prevents it, so the contraindication is not the first-listed diagnosis.

Correct Answer: The provider indicates its clinical significance

Under the UHDDS-based guidelines for non-outpatient settings, abnormal findings are not coded and reported unless the provider indicates their clinical significance. This differs from outpatient coding of diagnostic tests interpreted by a provider. Option b is incorrect because listing diagnoses in the patient record is the provider's responsibility, so a coder's own reading of a result cannot support reporting it. Option c is incorrect because further testing is a trigger for asking the provider whether the finding should be added, not the condition that permits reporting it. Option d is incorrect because an out-of-range value alone does not qualify; it only prompts a possible query to the provider, and reporting still depends on the provider's input.

Correct Answer: Principal diagnosis

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. It applies to inpatient and other non-outpatient settings. Option a is incorrect because it describes the basis for an outpatient surgery or visit, where the reason is coded first-listed, rather than an inpatient admission. Option c is incorrect because it is the term used in the outpatient setting in lieu of principal diagnosis, and does not fit an inpatient admission. Option d is incorrect because it covers conditions that coexist at admission, develop later, or affect treatment or length of stay, not the reason for admission.

Correct Answer: immediately following

The ICD-10-CM guidelines state that the word “with” in the Alphabetic Index is sequenced immediately following the main term or subterm, not in alphabetical order. Readers find it first under the term. Option a is incorrect because this would push “with” to the bottom of the list, but the guidelines put it directly next to the term it modifies. Option b is incorrect because the guidelines place “with” after the main term or subterm, so it is not positioned ahead of the term it applies to. Option d is incorrect because alphabetical placement is the ordinary rule for other subterms, and the guidelines expressly exempt “with” from it.

Correct Answer: Nursing homes

The application of the UHDDS definitions was expanded to all non-outpatient settings, including home health agencies, rehab facilities and nursing homes. They also apply to hospice services at all levels of care. Option a is incorrect because these visits fall under the outpatient diagnostic reporting guidelines, and the UHDDS definition of principal diagnosis is stated not to apply to them. Option b is incorrect because same-day surgery is an outpatient setting where the reason for surgery is reported as the first-listed diagnosis, not under UHDDS definitions. Option c is incorrect because the guidelines state the UHDDS principal diagnosis definition does not apply to hospital-based outpatient services, which use first-listed diagnosis reporting instead.