N19 – Unspecified kidney failure

Yes, the ICD code N19 can be used as a primary diagnosis, but only if there's no further information available during the time of coding regarding the reason for the encounter.

It should be used when, based on laboratory findings, the patient has impaired kidney function, and when the signs and symptoms of the patient are consistent with kidney failure. However, if the healthcare provider can formulate a more specific diagnosis, they must use a more specific code.

Some documents are evidence of impaired kidney function, whether abnormal laboratory results or clinical manifestations. To add, it should be proven that a more specific diagnosis has not been established.