N15.9 – Renal tubulo-interstitial disease, unspecified
ICD-10-CM 2027 diagnosis code · Renal tubulo-interstitial diseases
ICD-10-CM code
N15.9
- Code
N15.9(claims format:N159)- Description
- Renal tubulo-interstitial disease, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 14. Diseases of the genitourinary system (N00-N99)
- Block
- N10-N16 Renal tubulo-interstitial diseases
- Parent codes
- N15
Notes for N15.9
Applicable to:
- Infection of kidney NOS
Excludes1 (not coded here):
- urinary tract infection NOS (N39.0)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block N10-N16
Includes:
- pyelonephritis
Excludes1 (not coded here):
- pyeloureteritis cystica (N28.85)
Index terms for N15.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in N15
Frequently asked questions
What is ICD-10 code N15.9?
N15.9 is the ICD-10-CM code for renal tubulo-interstitial disease, unspecified, in the block N10-N16 (Renal tubulo-interstitial diseases).
Is N15.9 a billable code?
Yes. N15.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does N15.9 belong to?
It belongs to category N15 – Other renal tubulo-interstitial diseases.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.