N10
Billable codeAcute pyelonephritis
The ICD-10 code for acute pyelonephritis is N10.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Acute infectious interstitial nephritis
- Acute pyelitis
- Acute tubulo-interstitial nephritis
- Hemoglobin nephrosis
- Myoglobin nephrosis
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- N11Chronic tubulo-interstitial nephritisnon-billable header
- N12Tubulo-interstitial nephritis, not specified as acute or chronic
- N13Obstructive and reflux uropathynon-billable header
- N14Drug- and heavy-metal-induced tubulo-interstitial and tubular conditionsnon-billable header
- N15Other renal tubulo-interstitial diseasesnon-billable header
- N16Renal tubulo-interstitial disorders in diseases classified elsewhere
- N10Acute pyelonephritis
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 59010Approximate match
- 59011Approximate match
Associated MS-DRGs
N10 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.