Chronic kidney disease, stage 2 (mild)

This code signifies a persistent reduction in kidney function, characterized by a glomerular filtration rate (GFR) between 60-89 mL/min/1.73 m², or evidence of kidney damage (e.g., albuminuria, pathological abnormalities) with a GFR ≥ 90 mL/min/1.73 m². It indicates the second stage of chronic kidney disease, where kidney damage is mild.

Apply this code when documentation confirms a diagnosis of chronic kidney disease with a GFR consistently in the 60-89 range, or when there is other evidence of kidney damage despite a normal GFR. This diagnosis typically requires laboratory confirmation of GFR and/or proteinuria over a period of at least three months.

• Always confirm the chronicity of the kidney disease; acute kidney injury (AKI) codes are distinct.
• Ensure the GFR value or other indicators of kidney damage align with the "mild" stage 2 classification.
• Sequence this code after any underlying cause of the CKD, such as diabetes mellitus or hypertension, if applicable.