Non-Billable / Non-Specific Code
ICD-10-CM N11 is the diagnosis code for Chronic tubulo-interstitial nephritis. This code falls under the section "Renal tubulo-interstitial diseases" within Chapter 14 — Diseases of the genitourinary system (N00-N99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where N11 sits in the ICD-10-CM classification helps ensure proper coding:
No, N11 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
N11 is the ICD-10-CM diagnosis code for "Chronic tubulo-interstitial nephritis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
N11 is located in Section N10-N16 — "Renal tubulo-interstitial diseases" within Chapter 14 of the ICD-10-CM Tabular List.
N11 has 4 sub-code(s) that provide more specific detail: N11.0, N11.1, N11.8, N11.9.
Use N11 when the patients documented diagnosis matches "Chronic tubulo-interstitial nephritis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Chronic tubulo-interstitial nephritis is N11.
No, N11 is non-billable. Use a more specific sub-code for primary diagnosis billing.
N11 is in Chapter 14 of the ICD-10-CM Tabular List.
Yes, N11 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.