For this scenario, two surgeons are working together, each as a primary surgeon. Therefore, the correct coding requires the use of the modifier -62, which indicates co-surgeons.
* The transthoracic approach to excise the damaged portion of the vertebral body is coded with 63087.
* The insertion of the bone graft and metal plate is coded with 63088.
* Both codes are appended with modifier -62 to indicate that two surgeons worked together as primary surgeons on this case.
References:
* AMA's CPT Professional Edition (current year)
* ICD-10-CM (current year)
* HCPCS Level II (current year)

The correct J codes are selected based on the specific medications administered and their quantities:
J2405 represents "ondansetron, 1 mg," and since the patient received a 2 mg dose, J2405 is reported once with a quantity of 2 mg.
J1885 represents "ketorolac tromethamine, 15 mg," which matches the single 15 mg dose administered to the patient, so J1885 is reported once.
Each J code is billed according to the precise dosage given, as no multipliers are required beyond the single- unit codes provided in choice A, making it the correct answer.

Procedure: Impedance testing via tympanometry is performed to assess hearing loss in the left ear.
CPT Code:
92567: This code is for tympanometry (impedance testing) without reflex threshold measurements.
Code Selection Justification: The procedure involved tympanometry without reflex threshold, which is specifically coded as 92567.
AMA CPT Professional Edition (current year)

Malignant lesion destruction # CPT 17260-17286
Trunk/extremities
0.6-1.0 cm # 17261
1.1-2.0 cm # 17262
Both lesions are reported separately.

In this encounter, the correct coding order follows ICD-10-CM guidelines for coding multiple conditions when AIDS (B20) is documented, as it takes precedence. The patient's diagnosis of AIDS, documented with code B20, is reported as the primary diagnosis since it is a chronic condition. The M17.31 code is used to document unilateral primary osteoarthritis of the right knee, unrelated to AIDS but causing the patient's knee pain.
Explanation of each answer choice:
A: B20, M17.31: Correctly lists AIDS (B20) as the primary diagnosis and osteoarthritis of the right knee (M17.31) as the secondary diagnosis.
B: Z21, M08.861: Z21 represents asymptomatic HIV, not AIDS, which is incorrect here, and M08.861 is the code for juvenile idiopathic arthritis, not relevant in this case.
C: M17.11, B20: Incorrect as M17.11 is for unilateral primary osteoarthritis of the right knee, not left, and does not prioritize B20 as required.
D: M17.31, B20: Incorrect because it does not list B20 as the primary diagnosis, which is necessary per coding guidelines when AIDS is documented.
Thus, the correct answer is A. B20, M17.31.