COC ICD-10-CM Coding 4

Question 1

A patient with chronic systolic heart failure is admitted through the ED and ultimately discharged the same day. Which ICD-10-CM guideline applies to sequencing?

Accepted Answer

Use outpatient guidelines; the confirmed diagnosis I50.22 is coded

Answer

Even for same-day admissions, outpatient guidelines apply and the confirmed diagnosis (I50.22, chronic systolic heart failure) is coded.

Question 2

An instructional note 'Excludes1' in ICD-10-CM means:

Accepted Answer

The two conditions cannot occur together and cannot be coded simultaneously

Answer

Excludes1 indicates a pure exclusion—the conditions are mutually exclusive and cannot be assigned together.

Question 3

When coding adverse effects of correctly prescribed and properly administered medications in ICD-10-CM, what is the sequencing rule?

Accepted Answer

Code the adverse effect manifestation first, then the drug code with 5th character '5'

Answer

For adverse effects, the nature of the adverse effect (manifestation) is sequenced first, followed by the drug code from Table of Drugs and Chemicals with the appropriate character for adverse effect.

Question 4

Which ICD-10-CM code is used when a patient is seen specifically because a screening colonoscopy reveals a polyp?

Accepted Answer

Z12.11 plus the polyp finding code, with Z12.11 as first-listed

Answer

Per ICD-10-CM guidelines, the screening code Z12.11 remains first-listed even when a finding is discovered; the finding is coded additionally.

Question 5

A patient is treated for cellulitis of the right lower leg caused by Staphylococcus aureus. How many ICD-10-CM codes are required?

Accepted Answer

Two codes: L03.115 for right lower leg cellulitis and B95.61 for MSSA

Answer

L03.115 identifies right lower leg cellulitis, and B95.61 identifies Staphylococcus aureus (MSSA) as the causative organism, requiring two codes.

COC - Certified Outpatient Coder Practice Test

COC - Certified Outpatient Coder Practice Test

COC ICD-10-CM Coding 4