CPCA Modifier Use in Dermatology Questions and Answers

Question 1

A new patient presents for a comprehensive full-body skin examination due to a family history of melanoma. During this extensive evaluation, the dermatologist identifies a highly suspicious 0.8 cm nevus on the patient's back and performs a shave biopsy in the same visit. How should the services be coded to ensure proper reimbursement for both the distinct evaluation and the minor procedure?

Accepted Answer

Append modifier 25 to the E/M code.

Answer

Modifier 25 is used to indicate that a significant, separately identifiable Evaluation and Management (E/M) service was performed by the same physician on the same day as a minor surgical procedure. The comprehensive full-body skin exam is a distinct and separate service from the work involved in performing the shave biopsy itself.

Question 2

A dermatologist performs cryosurgery on two separate and distinct actinic keratosis lesions during the same office visit: one on the forehead and one on the left hand. Which modifier is most appropriate to append to the CPT code for the second lesion to indicate it was a distinct procedure at a different anatomical site?

Accepted Answer

Modifier 59

Answer

Modifier 59, 'Distinct Procedural Service,' is used to identify procedures that are not normally reported together but are appropriate under the circumstances. It signifies that the destruction of the second lesion was performed on a different anatomical site and was independent from the first destruction.

Question 3

A patient undergoes a shave removal of a benign lesion from their right middle finger and another from their left index finger. Which set of HCPCS Level II anatomical modifiers should be used to specify the exact location of these two procedures?

Accepted Answer

F7 and F2

Answer

HCPCS Level II modifiers provide specific anatomical detail. F7 represents the right hand, third digit (middle finger), and F2 represents the left hand, second digit (index finger). Using these specific modifiers is more accurate than the general RT (Right Side) and LT (Left Side) modifiers.

Question 4

A dermatologist performs a wide excision of a confirmed melanoma on a patient's back. During the same operative session, the physician also performs a punch biopsy of a completely unrelated suspicious lesion on the patient's shoulder. Which of the following modifiers should be appended to the punch biopsy code?

Accepted Answer

Modifier 51

Answer

Modifier 51 is used to indicate that multiple procedures (other than E/M services) were performed at the same session by the same provider. The punch biopsy is a separate surgical procedure from the excision, and appending modifier 51 to the lesser-valued procedure informs the payer, who will typically apply a multiple procedure payment reduction.

Question 5

A patient had a benign cyst excised from their arm, a procedure with a 10-day global period. Six days later, the same patient returns to the same dermatologist for an entirely new and unrelated issue: an acute allergic rash on their legs that requires evaluation and management. Which modifier should be appended to the E/M service code for the rash visit?

Accepted Answer

Modifier 24

Answer

Modifier 24 is used for an Unrelated Evaluation and Management (E/M) Service by the Same Physician During a Postoperative Period. Since the visit for the allergic rash is completely unrelated to the cyst excision and occurred within the 10-day global period, this modifier is necessary to show the E/M service should be paid separately. Modifier 79 is for unrelated *procedures*, not E/M services.

CPCA Exam Practice Test

CPCA Exam Practice Test

CPCA Modifier Use in Dermatology Questions and Answers