Research Article
Monitoring COVID-19 and Influenza: The Added Value of a Severe Acute Respiratory Infection Surveillance System in Portugal
Table 2
List of diagnosis codes used for severe acute respiratory infection cases identification, hospital-based surveillance.
| | Category | Morbidity | ICD-10 |
| | Influenza-like illness | Cough | R05 | | Difficulty breathing | R06 | | Sore throat | R07.0 | | Dysphagia | R13 | | Fever | R50.9 | | Headache | R51 | | Myalgia | M79.1 | | Fatigue/malaise | R53.1, R53.81, R53.83 |
| | Cardiovascular diagnosis | Acute myocardial infarction or acute coronary syndrome | I20-23, I24-25 | | Heart failure | I50, I51 |
| | Respiratory diagnosis | Emphysema | J43.9 | | Chronic obstructive pulmonary disease | J44.9 | | Asthma | J45 | | Dyspnoea/respiratory abnormality | R06.0 | | Respiratory abnormality | R06.9 | | Shortness of breath | R06.02 | | Tachypnoea | R06.82 | | Other respiratory abnormalities | R06.00, R06.09, R06.3, R06.89 |
| | Respiratory infection | Pneumonia and influenza | J09-J18 | | Other acute lower respiratory infections | J20-J22 | | Viral infection, unspecified | B34.9 | | Bacterial infection, unspecified | A49.9 | | Bronchitis | J40, 41 | | Myocarditis | I40.9 | | COVID-19, virus identified | U07.1 | | COVID-19, virus not identified | U07.2 |
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ICD-10: International Statistical Classification of Diseases and Related Health Problems, 10th Revision; COVID-19: coronavirus disease.
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