AAPC Updated CPC Exam Questions and Answers by eisa

For professional claims,Place of Service (POS) 12is used to indicate services performed in the patient’shome/private residence. This is a high-frequency reimbursement concept because POS impacts payer processing, fee schedules, and in some cases whether certain services are payable. POS codes like 41 and 42 are not used for a private home setting:41is typically associated withambulance—land, and42withambulance—air or water(transport settings rather than a location of patient residence). POS 65 refers to a specific facility-type setting (commonly associated withend-stage renal disease treatment facilities) and is not a home. On CPC-style questions, the key is recognizing that “private residence” equalshome—not assisted living, skilled nursing, or a facility. Correct POS reporting supports medical necessity review and correct payment and helps prevent denials, recoupments, and compliance risk. When documentation states the service occurred at the patient’s residence, POS 12 is the standard selection.

According to ICD-10-CM burn guidelines:

When burns of different degrees occur at the same site, only the highest degree is coded, not separate codes.

The other statements are true:

Necrosis is coded as a non-healed burn

Burn codes include electrical and radiation burns

The highest degree burn is sequenced first

Procedure Coding (CPT®):

33533 – CABG, arterial graft; single arterial graft (LIMA to LAD)

Correct for left internal mammary artery → LAD

33519 – CABG, venous grafts; three coronary venous grafts

Saphenous vein grafts placed to:

Obtuse marginal

Ramus intermedius

Posterior descending artery

Total = 3 venous grafts

33508 – Endoscopic harvest of saphenous vein

Separately reportable only when endoscopic

Add-on code (no modifier required)

Why Other Options Are Incorrect:

A / C – Incorrect arterial graft code (33536 = multiple arterial grafts)

B – Incorrect venous graft count (33512 = two grafts)

CPT® Guideline Reference:

CABG codes are selected based on:

Type of conduit (arterial vs venous)

Number of distal anastomoses

Endoscopic harvest is add-on and separately reportable

69200 – Removal of foreign body from external auditory canal; without anesthesia

Correct for simple removal using forceps

Patient tolerated procedure without anesthesia

Why Other Options Are Incorrect:

69110 / 69105 – Middle ear procedures

69205 – Removal with general anesthesia