N15.9 Renal tubulo-interstitial disease, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Infection of kidney NOS

Excludes1 (never code together)

• urinary tract infection NOS (N39.0)

MS-DRG index

Defines the logic of DRG(s) 698-700 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 583.9 Nephritis and nephropathy, not specified as acute or chronic, with unspecified pathological lesion in kidney (approximate)
• 590.9 Infection of kidney, unspecified (approximate)

Diagnosis Index entries for N15.9

• Disease, diseased › tubulo-interstitial
• Infection, infected, infective (opportunistic) › kidney (cortex) (hematogenous)

Nearby codes

• N15 Other renal tubulo-interstitial diseases
• N15.0 Balkan nephropathy
• N15.1 Renal and perinephric abscess
• N15.8 Other specified renal tubulo-interstitial diseases
• N15.9 Renal tubulo-interstitial disease, unspecified (this code)