A36.84 Diphtheritic tubulo-interstitial nephropathy

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

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 032.89 Other specified diphtheria (approximate)

Code annotations containing back-references to A36.84

Back-references to A36.84

• Type 1 Excludes: N16 Renal tubulo-interstitial disorders in diseases classified elsewhere ("diphtheritic pyelonephritis and tubulo-interstitial nephritis (A36.84)")

Diagnosis Index entries for A36.84

• Disorder (of) › tubulo-interstitial (in) › diphtheria
• Pyelonephritis › in (due to) › diphtheria

Nearby codes

• A36.3 Cutaneous diphtheria
• A36.8 Other diphtheria
• A36.81 Diphtheritic cardiomyopathy
• A36.82 Diphtheritic radiculomyelitis
• A36.83 Diphtheritic polyneuritis
• A36.84 Diphtheritic tubulo-interstitial nephropathy (this code)
• A36.85 Diphtheritic cystitis
• A36.86 Diphtheritic conjunctivitis
• A36.89 Other diphtheritic complications
• A36.9 Diphtheria, unspecified