N12

Billable

Tubulo-interstitial nephritis, not specified as acute or chronic

N12 is the ICD-10-CM code for Tubulo-interstitial nephritis, not specified as acute or chronic. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
N00-N99
Edition
FY2026

N00-N99 Diseases of the genitourinary system

Includes

  • Interstitial nephritis NOS
  • Pyelitis NOS
  • Pyelonephritis NOS

Excludes1 — not coded here

  • calculous pyelonephritis (N20.9)

Frequently asked questions

What is ICD-10 code N12?
N12 is the ICD-10-CM code for "Tubulo-interstitial nephritis, not specified as acute or chronic". It falls under N00-N99 Diseases of the genitourinary system.
Is N12 a billable code?
Yes — N12 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from N12?
Excludes1 (not coded here): calculous pyelonephritis (N20.9).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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