AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2020 Issue 4; New/Revised ICD-10-CM Codes

Stage 3 Chronic Kidney Disease

Code N18.3, Chronic kidney disease, stage 3 (moderate), has been expanded to capture additional stage 3 detail and differentiate chronic kidney disease (CKD) stage 3 unspecified (N18.30), CKD stage 3a (N18.31), and CKD stage 3b (N18.32).Current clinical practice for renal function monitoring is to calculate estimated glomerular filtration rate (eGFR), using inputs of serum creatinine concentration and several other parameters including height, weight, gender, and ethnicity. Stage 3 CKD involves an eGFR between 30 and 59. Stage 3 is further subdivided based on the eGFR into stage 3a (eGFR between 45 and 59) and...

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