CCDS Acute Kidney Injury and Renal Documentation 2

Question 1

Which CKD stage corresponds to a GFR of 15–29 mL/min/1.73m²?

Accepted Answer

Stage 4

Answer

CKD Stage 4 is defined by a GFR of 15–29 mL/min/1.73m², representing severely decreased kidney function approaching end-stage disease.

Question 2

Which ICD-10-CM code is assigned for end-stage renal disease (ESRD) requiring renal replacement therapy?

Accepted Answer

N18.6

Answer

N18.6 is the specific ICD-10-CM code for ESRD, which is distinct from N18.5 (CKD Stage 5) and indicates dependency on dialysis or other renal replacement therapy.

Question 3

A patient with type 2 diabetes mellitus is documented with CKD Stage 3b. What is the correct ICD-10-CM coding approach?

Accepted Answer

Assign E11.22 for diabetic chronic kidney disease plus N18.32 for the specific CKD stage

Answer

ICD-10-CM requires E11.22 (type 2 DM with diabetic CKD) paired with N18.32 (CKD Stage 3b) to capture both the diabetic etiology and the specific stage of CKD.

Question 4

According to ICD-10-CM guidelines, what relationship is assumed between hypertension and chronic kidney disease when both are documented?

Accepted Answer

A causal relationship is assumed, requiring combination codes from category I12

Answer

ICD-10-CM presumes a causal relationship between hypertension and CKD, requiring combination codes from category I12 without explicit provider documentation of causality.

Question 5

What does the clinical term 'acute-on-chronic kidney disease' indicate for ICD-10-CM coding purposes?

Accepted Answer

AKI superimposed on pre-existing CKD, requiring codes for both conditions

Answer

Acute-on-chronic kidney disease indicates AKI has developed in a patient with underlying CKD; ICD-10-CM requires assigning codes for both AKI (N17.x) and the appropriate CKD stage (N18.x).

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CCDS Acute Kidney Injury and Renal Documentation 2