N12
✓ Billable
Tubulo-interstitial nephritis, not specified as acute or chronic
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N12
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code N12?
ICD-10-CM code N12 represents Tubulo-interstitial nephritis, not specified as acute or chronic. It is a billable diagnosis code in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N12 billable?
Yes. N12 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is N12 in?
N12 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
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