ICD-10-CM Diagnosis Code N11.9
Diagnosis Code: N11.9 (Raw: N119)
Description: Chronic tubulo-interstitial nephritis, unspecified
Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)
Fiscal Year: 2026
CMS Section 111 Status: Valid for reporting.
Overview & Clinical Details
ICD-10-CM code N11.9 is designated for Chronic tubulo-interstitial nephritis, unspecified. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.