ICD-10-CM category
N12: Tubulo-interstitial nephritis, not specified as acute or chronic
N12 is “Tubulo-interstitial nephritis, not specified as acute or chronic”. It has no subcodes in this category.
Frequently asked questions
What is ICD-10-CM code N12?
N12 is the ICD-10-CM code for Tubulo-interstitial nephritis, not specified as acute or chronic.
Is N12 billable?
Yes — N12 is a valid, billable ICD-10-CM code (it has no further subdivisions).
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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