Complete ICD-10-CM coding and documentation guide for icd-10 coding for abnormal renal function includes clinical validation requirements, medical necessity guidelines, and coding policies.
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Essential facts and insights about ICD-10 Coding for Abnormal Renal Function
Use ICD-10 code N18.1 for chronic kidney disease, stage 1, ensuring proper documentation in clinical notes.
Additional codes that may be used with this diagnosis
Abnormal results of kidney function studies
Use when abnormal kidney function tests are present without CKD diagnosis.
Use R94.4 for abnormal kidney function tests without a confirmed CKD diagnosis. It applies when eGFR is abnormal but CKD criteria are not met.
Sequence based on etiology: I12.9 for hypertensive CKD or E11.22 for diabetic CKD, ensuring documentation states the causal relationship.