N10

ICD-10Billable

Acute pyelonephritis

Official ICD-10-CM descriptor (FY2026)

Acute pyelonephritis

N10 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Acute infectious interstitial nephritis
  • Acute pyelitis
  • Acute tubulo-interstitial nephritis
  • Hemoglobin nephrosis
  • Myoglobin nephrosis

Use additional code

Report an additional code to identify the associated condition.

  • code (B95-B97), to identify infectious agent.

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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