Certified Professional Coder CPC Passing Score

Procedure: Hepatitis B vaccine administration for a Medicare patient on dialysis.

CPT® and HCPCS Codes:

G0010: Administration of Hepatitis B vaccine.

90740: Hepatitis B vaccine, dialysis or immunosuppressed patient dosage, 3-dose schedule.

ICD-10-CM Codes:

Z23: Encounter for immunization.

N18.6: End-stage renal disease.

Z99.2: Dependence on renal dialysis.

Code Selection Justification: G0010 is used for the administration of the vaccine for Medicare patients, and 90740 captures the specific vaccine for dialysis patients. The ICD-10 codes represent the encounter for vaccination and the patient ' s dialysis status.

AMA CPT® Professional Edition (current year)

ICD-10-CM (current year)

HCPCS Level II (current year)

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.

The knee joint consists of three primary compartments:

1. Medial compartment: The inside part of the knee, which includes the femur and tibia interaction on the inner side.

2. Lateral compartment: The outside part of the knee, where the femur and tibia meet on the outer side.

3. Patellofemoral compartment: The area between the patella (kneecap) and the femur.

These three compartments are essential for knee joint stability and function, allowing movement and weight-bearing activities.

B. Trochlea groove and vestibular are not associated with knee anatomy.

C. Posterior malleolus, scapula, and fibular facet do not relate to knee compartments; the malleolus is in the ankle, scapula in the shoulder, and fibular facet is not part of the primary knee compartments.

D. Cochlea is unrelated to knee anatomy and refers to a part of the inner ear.

Thus, the correct answer is A. Medial, lateral, and patellofemoral.

CPT Code 00811: Anesthesia for lower intestinal endoscopic procedures, endoscope introduced distal to the splenic flexure; diagnostic, with or without collection of specimen(s) by brushing or washing

This code is reported for anesthesia services provided during a colonoscopy that is diagnostic in nature.

ICD-10-CM Code D62: Acute posthemorrhagic anemia

This is the most accurate postoperative diagnosis. The operative report states " Anemia due to acute blood loss. "

ICD-10-CM Code N18.6: End stage renal disease

This code captures the patient ' s documented history of ESRD.

ICD-10-CM Code Z99.2: Dependence on renal dialysis

This code is necessary to report the patient ' s dialysis status, as it affects the overall risk of the procedure.

Why other options are incorrect:

00812: This code is for therapeutic colonoscopies, not diagnostic.

D64.9: This code is for anemia, unspecified. D62 is more specific to the patient ' s condition.

K62.5: This code is for lower gastrointestinal bleeding, but the anemia is the primary diagnosis in this case.