#18 Choose the correct code assignment for the following scenario: 77-year-old with TB of the right knee.

A. A18.01

B. A18.02

C. A18.03

D. A18.09

Apply the ICD-10-CM Official Guidelines for Coding and Reporting of the Principal Diagnosis for Inpatient Care (Guidelines I A- J) to identify the principal diagnosis in the following scenario.

The patient was admitted to the hospital for a total right knee replacement for osteoarthritis of the knee. During the patient's preoperative preparation, the patient began having chest pain. The patient's knee surgery was canceled, and the patient had extensive testing to determine the source of the chest pain, which was determined to be due to hypertensive heart disease.

Apply the ICD-10-CM Official Guidelines for Coding and Reporting of the Principal Diagnosis for Inpatient Care (Guidelines I A- J) to identify the principal diagnosis in the following scenario.

The physician's discharge summary includes the final diagnoses of (1) Congestive heart failure, with an additional diagnosis of (2) with hypertension, and (3) status post cholecystectomy.

Apply the ICD-10-CM Official Guidelines for Coding and Reporting of the Principal Diagnosis for Inpatient Care (Guidelines II A-J) to identify the principal diagnosis in the following scenarios.

Patient was admitted to the hospital with acute pyelonephritis and acute cystitis. Both infections were evaluated and treated with IV antibiotic therapy. THe patient was discharged home to continue taking oral medications.