AAPC CPC Exam With Confidence Using Practice Dumps

Procedure Coding (CPT®):

69910 – Labyrinthectomy, complete; transmastoid approach

Provider performed:

Mastoidectomy

Complete destruction/removal of semicircular canals, utricle, and saccule

This is a complete labyrinthectomy, not partial

69990 – Microsurgical techniques, requiring use of operating microscope

Separately reportable with otologic procedures

Modifier -51 not required (add-on code)

Diagnosis Coding (ICD-10-CM):

H81.391 – Peripheral vertigo, right ear

Correct laterality and condition

Why Other Options Are Incorrect:

69905 – Partial labyrinthectomy

R42 – Symptom code (dizziness), not used when definitive diagnosis exists

In the ICD-10-CM Tabular List,parentheses ( )are used to enclosenonessential modifiers, also described assupplementary words. These are words thatmay be present or absentin the diagnostic statement without affecting code assignment. This is exactly why parentheses are associated with synonyms, alternative wording, or explanatory phrases. If the provider documents the core diagnosis and the parenthetical term is missing, the code can still be correct; if the parenthetical term is present, it still points to the same code. By contrast, acolon (:)is used after an incomplete term that needs one or more additional terms to make it assignable.Brackets [ ]have other specific functions (such as enclosing synonyms in certain contexts and used with instructional content), but the standard CPC-tested definition for “synonyms/alternative wording/explanatory phrases” in the Tabular List points toparenthesesas nonessential modifiers. Knowing this distinction supports accurate code selection and reduces errors when provider wording varies.

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