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ICD-10-CM Codes
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A00-B99
Certain infectious and parasitic diseases
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A30-A49
Other bacterial diseases
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A36-
Diphtheria
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2021 ICD-10-CM Diagnosis Code A36.9
2021 ICD-10-CM Diagnosis Code A36.9
Diphtheria, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- A36.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM A36.9 became effective on October 1, 2020.
- This is the American ICD-10-CM version of A36.9 - other international versions of ICD-10 A36.9 may differ.
The following code(s) above
A36.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
A36.9:
Approximate Synonyms
- Diphtheria
- Diphtheria infection
Clinical Information
- A gram-positive bacterial infection caused by corynebacterium diphtheria. It usually involves the oral cavity, pharynx, and nasal cavity. Patients develop pseudomembranes in the affected areas and manifest signs and symptoms of an upper respiratory infection. The diphtheria toxin may cause myocarditis, polyneuritis, and other systemic effects.
- A localized infection of mucous membranes or skin caused by toxigenic strains of corynebacterium diphtheriae. It is characterized by the presence of a pseudomembrane at the site of infection. Diphtheria toxin, produced by c. Diphtheriae, can cause myocarditis, polyneuritis, and other systemic toxic effects.
- Diphtheria is a serious bacterial infection. You can catch it from a person who has the infection and coughs or sneezes. It usually affects the nose and throat and causes a bad sore throat, swollen glands, fever and chills. But if it is not properly diagnosed and treated it produces a poison in the body that can cause serious complications such as heart failure or paralysis.the diphtheria, pertussis and tetanus (dpt) vaccine can prevent diphtheria, but its protection does not last forever. Adults should get another dose, or booster, every 10 years. Diphtheria is very rare in the United States because of the vaccine. Centers for Disease Control and Prevention.
- Localized infection of mucous membranes or skin caused by toxigenic strains of corynebacterium diphtheriae; it is characterized by the presence of a pseudomembrane at the site of infection; diphtheria toxin, produced by c. Diphtheriae, can cause myocarditis, polyneuritis, and other systemic toxic effects.
ICD-10-CM A36.9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 867 Other infectious and parasitic diseases diagnoses with mcc
- 868 Other infectious and parasitic diseases diagnoses with cc
- 869 Other infectious and parasitic diseases diagnoses without cc/mcc
Convert A36.9 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To A36.9
A36.2 Laryngeal diphtheria
A36.3 Cutaneous diphtheria
A36.81 Diphtheritic cardiomyopathy
A36.82 Diphtheritic radiculomyelitis
A36.83 Diphtheritic polyneuritis
A36.84 Diphtheritic tubulo-interstitial nephropathy
A36.86 Diphtheritic conjunctivitis
A36.89 Other diphtheritic complications
A36.9
Diphtheria, unspecified
A37.0 Whooping cough due to Bordetella pertussis
A37.1 Whooping cough due to Bordetella parapertussis
A37.8 Whooping cough due to other Bordetella species
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.