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  3. Ch. A00-B99
  4. Sec. A30-A49
  5. Category A36
Category A36

Diphtheria

Clinical Classification Guidelines

Specific Diagnosis Codes

Pharyngeal diphtheria
A36.0
Nasopharyngeal diphtheria
A36.1
Laryngeal diphtheria
A36.2
Cutaneous diphtheria
A36.3
Other diphtheria
A36.8
Diphtheritic cardiomyopathy
A36.81
Diphtheritic radiculomyelitis
A36.82
Diphtheritic polyneuritis
A36.83
Diphtheritic tubulo-interstitial nephropathy
A36.84
Diphtheritic cystitis
A36.85
Diphtheritic conjunctivitis
A36.86
Other diphtheritic complications
A36.89
Diphtheria, unspecified
A36.9
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Data updated for October 2025 release.

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