A36.85 Diphtheritic cystitis

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) 689-690 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 032.84 Diphtheritic cystitis

Code annotations containing back-references to A36.85

Back-references to A36.85

• Type 1 Excludes: N33 Bladder disorders in diseases classified elsewhere ("diphtheritic cystitis (A36.85)")

Diagnosis Index entries for A36.85

• Cystitis (exudative) (hemorrhagic) (septic) (suppurative) › diphtheritic

Nearby codes

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