Billable / Specific Code
ICD-10-CM N15.9 is the diagnosis code for Renal tubulo-interstitial disease, unspecified. This code falls under the section "Renal tubulo-interstitial diseases" within Chapter 14 — Diseases of the genitourinary system (N00-N99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as N15.9. They are mutually exclusive:
Understanding where N15.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, N15.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
N15.9 is the ICD-10-CM diagnosis code for "Renal tubulo-interstitial disease, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of N15.9 is N15 ("Other renal tubulo-interstitial diseases"). N15.9 provides a more specific classification within this category.
N15.9 is located in Section N10-N16 — "Renal tubulo-interstitial diseases" within Chapter 14 of the ICD-10-CM Tabular List.
Use N15.9 when the patients documented diagnosis matches "Renal tubulo-interstitial disease, unspecified" 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 Renal tubulo-interstitial disease, unspecified is N15.9.
Yes, N15.9 can be used as a primary diagnosis code since it is billable and specific.
N15.9 is in Chapter 14 of the ICD-10-CM Tabular List.
Type 1 Excludes for N15.9 include: urinary tract infection NOS (N39.0).
Yes, N15.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.