Code N18.4 represents which stage of chronic kidney disease?

The code N18.4 corresponds to "severe chronic kidney disease" (CKD). In the ICD-10-CM coding system, chronic kidney disease is classified into five stages based on the glomerular filtration rate (GFR) and the degree of kidney damage.

Severe CKD is defined by a GFR of 15 to less than 30 ml/min, indicating significant kidney impairment. This classification helps healthcare providers to accurately document the extent of kidney disease, which is crucial for treatment planning and management.

Recognizing the stages of CKD not only facilitates better patient care but also assists in monitoring disease progression and making decisions about interventions. This particular code equips the provider with a precise way to communicate the severity of the condition, which is vital in a clinical setting.