N15.9
N15.9: Renal tubulo-interstitial disease, unspecified
Billable / specific codeICD-10-CM
N15.9 is a billable, specific ICD-10-CM code for renal tubulo-interstitial disease, unspecified. It is valid for submission on a claim.
Check N15.9 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- urinary tract infection NOS (N39.0)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Infection of kidney NOS
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
N15.9 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A55336Billing and Coding: Retroperitoneal Ultrasound
- A56421Billing and Coding: CT of the Abdomen and Pelvis
Alphabetic index entries that lead here
- Disease, diseased›tubulo-interstitial
- Infection, infected, infective›kidney(cortex) (hematogenous)
Code history
Unchanged in every release from FY2024 to FY2027.