N11 (Chronic tubulo-interstitial nephritis) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the genitourinary system chapter. It identifies cases of chronic tubulo-interstitial nephritis for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

N11 — Chronic tubulo-interstitial nephritis

Chapter N00-N99: Diseases of the genitourinary system

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Sub-codes under N11

N11.0Nonobstructive reflux-associated chronic pyelonephritisN11.1Chronic obstructive pyelonephritisN11.8Other chronic tubulo-interstitial nephritisN11.9Chronic tubulo-interstitial nephritis, unspecified

Common questions about N11 (Chronic tubulo-interstitial nephritis)

What does ICD-10 code N11 mean?
N11 is the ICD-10-CM 2025 code for Chronic tubulo-interstitial nephritis. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is N11 a billable diagnosis code?
N11 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under N11. Browse the sub-codes listed on this page.
Which ICD-10 chapter does N11 belong to?
N11 belongs to the chapter "Diseases of the genitourinary system" (codes N00-N99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Chronic tubulo-interstitial nephritis?
For a plain-language explanation of Chronic tubulo-interstitial nephritis, ask GoDavaii's Health AI - it explains medical conditions in 90+ languages, free, with no signup. Tap "Ask GoDavaii AI about Chronic tubulo-interstitial nephritis" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗