Chronic kidney disease, stage 3 unspecified

This code signifies a moderate decrease in kidney function, characterized by a glomerular filtration rate (GFR) typically between 30 and 59 mL/min/1.73 m², without further specification of the GFR range within stage 3. It indicates persistent kidney damage or reduced function for three months or more.

Use this code when documentation clearly states "chronic kidney disease stage 3" but does not specify whether it's stage 3a (GFR 45-59) or 3b (GFR 30-44). This is appropriate when the provider has not further refined the staging within stage 3.

• Always attempt to clarify with the provider for a more specific stage (N18.31 or N18.32) if the GFR is documented.
• Code also any associated conditions, such as hypertension (I12.9, I13.10, I13.11, I13.2) or diabetes (E08-E13 with .22 or .29).
• Do not use this code if the documentation specifies acute kidney injury (N17.-) or end-stage renal disease (N18.6).