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R94.4 — Abnormal results of kidney function studies
R94.4
What this code means
Abnormal results of kidney function studies are blood or urine test results suggesting the kidneys are not working normally.
Also called: abnormal kidney function tests, abnormal renal function.
When this code is used
Used for abnormal results of kidney function studies.
Where it sits in ICD-10-CM
Code R94.4 belongs to Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, which covers codes R00–R99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related anatomy
Frequently asked questions
What is ICD-10-CM code R94.4?
R94.4 is the ICD-10-CM diagnosis code for “Abnormal results of kidney function studies”. Abnormal results of kidney function studies are blood or urine test results suggesting the kidneys are not working normally.
When is code R94.4 used?
Used for abnormal results of kidney function studies. It belongs to Chapter 18 of ICD-10-CM (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.