AAPC Updated CPC Exam Questions and Answers by constance

Per CPT® E/M guidelines, time spent on separately reported services is excluded from total E/M time calculations.

Escharotomy is reported using CPT codes16035(escharotomy; initial incision) and16036(each additional incision). Because the operative note statestwo incisionswere made, you report16035 for the first incisionand16036 for the second incision. Reporting 16035 twice is not correct because CPT distinguishes the first incision from each additional incision. “-51” is not the appropriate mechanism here because 16036 is inherently an add-on style “each additional incision” service within the family; you code the correct units rather than applying a multiple-procedure modifier. For diagnosis coding, a third-degree burn of the chest wall is captured withT21.31XA(third-degree burn of chest wall, initial encounter). TBSA is10%, and because all burns are third-degree totaling10%, the TBSA code should reflect10–19% TBSA with 10–19% third-degree, which isT31.11. Option B is the only choice that correctly pairs the CPT structure (initial + additional incision) with the appropriate burn location and TBSA/third-degree severity reporting.

80324 – Drug test(s), definitive, qualitative or quantitative, LC/MS; acetaminophen

LC-MS = definitive testing

Acetaminophen is specifically identified by 80324

Why others are incorrect:

60143 / 80299 – Therapeutic drug assays (obsolete or nonspecific)

B0329 – HCPCS code (not appropriate here)

This is aplanned stagedcongenital cardiac repair following prior pulmonary artery banding, so the correct postoperative modifier concept isstaged/related(modifier-58), not an unplanned return-to-OR modifier (-78). The operative service includesremoval of the pulmonary artery bandandarterial switch/transposition-type repairof the great vessels (captured in the 33778/33779 family in the answer choices). The case also describes use ofECMOwith central cannulation and management during the procedure, which is reported with the appropriate ECMO initiation/management codes shown as33955and the monitoring/assistant-related component represented by33985in the choices. Because this is thesecond stageof care and described as planned definitive repair, the -58 modifier is appropriate on the reported surgical services in these answer constructs. OptionDcorrectly pairs the staged modifier (-58) with the appropriate congenital repair and ECMO-related coding listed in the question’s options.