N10 Acute pyelonephritis

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

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

Use additional code

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

Applies from N10 Acute pyelonephritis

Applicable to

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

Use additional code

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

MS-DRG index

Defines the logic of DRG(s) 689-690 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 590.10 Acute pyelonephritis without lesion of renal medullary necrosis (approximate)
• 590.11 Acute pyelonephritis with lesion of renal medullary necrosis (approximate)

Code annotations containing back-references to N10

Back-references to N10

• Type 1 Excludes: N00 Acute nephritic syndrome ("acute tubulo-interstitial nephritis (N10)")

Back-references to N10

• Type 1 Excludes: N00 Acute nephritic syndrome ("acute tubulo-interstitial nephritis (N10)")

Diagnosis Index entries for N10

• Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) › tubulo-interstitial (in) › acute (infectious)
• Nephrosis, nephrotic (Epstein's) (syndrome) (congenital) › hemoglobin
• Nephrosis, nephrotic (Epstein's) (syndrome) (congenital) › myoglobin
• Pyelitis (congenital) (uremic) › acute
• Pyelonephritis › acute

Nearby codes

• N10 Acute pyelonephritis (this code)