What are the principal and secondary ICD-10-CM diagnosis codes for an elderly male patient with stage 4 chronic renal disease and congestive heart failure due to hypertension?

• A. I13.0, N18.4, I50.9
• B. E11.621, L97.421
• C. G89.3, C56.9
• D. K35.80, Z21

Answer: (A)

The principal and secondary ICD-10-CM diagnosis codes for this scenario accurately reflect the patient's conditions.

In this situation, the principal diagnosis is chronic renal disease, specifically stage 4, which is coded as N18.4. This classification is vital as it indicates the severity of kidney dysfunction which impacts treatment and prognosis. The secondary diagnosis is congestive heart failure, coded as I50.9, which is a common complication of chronic renal disease, particularly when compounded by hypertension. The code I13.0 is appropriate as it represents the hypertensive heart and chronic kidney disease, indicating that the patient's heart failure is due to hypertension, which can lead to both heart and renal complications.

Overall, the chosen codes clearly represent the relationship between the patient's chronic conditions, focusing on both the renal disease and its cardiovascular effects. Each code is aligned with ICD-10-CM guidelines, emphasizing accurate documentation for effective patient management and billing.