Other acute viral hepatitis

This record refers to other acute viral hepatitis, an ICD-coded category for acute viral hepatitis not otherwise specified in the source material ^[3]. The supplied evidence most directly characterizes hepatitis E virus as a small RNA virus that differs from other known human viruses and was identified after outbreaks of acute hepatitis were shown not to be due to hepatitis A or B ^[1]. Because the payload does not provide a full disease definition for the umbrella code itself, source-backed detail beyond this acute viral hepatitis context is not yet available ^[1][3].

The available sources indicate that acute hepatitis due to hepatitis E is generally a self-limiting illness and is said to be clinically similar to other acute viral hepatitis, while asymptomatic infection is common, especially in children ^[1][2]. Outbreak reports describe a higher frequency of fulminant cases, particularly among pregnant women, with severe outcomes including fulminant hepatic failure and adverse pregnancy outcomes such as spontaneous abortion and stillbirth ^[1][2]. The course is described as usually benign with little risk of chronic symptoms or cirrhosis, although severe icteric disease and mortality have been reported in a minority of cases ^[1][2]. For the umbrella code as a whole, source-backed detail on symptom pattern and complications is otherwise not yet available ^[1][2].

The evidence describes hepatitis E as endemic across developing countries, with outbreaks reported in southern Asia, Africa, and Mexico, and sporadic cases in endemic settings ^[1]. One source states that more than 2 billion people live in hepatitis E-endemic areas and are therefore at risk, and that the virus causes about 20.1 million infections and 70,000 deaths annually according to the cited WHO estimate ^[2]. Outbreaks are characterized by epidemic proportions and preferential involvement of adolescents and young adults, while increasingly recognized autochthonous cases are noted in developed countries ^[1][2]. The provided material also states that hepatitis E accounts for more than half of acute viral hepatitis cases in endemic countries, but this figure applies to hepatitis E rather than to the broader umbrella code ^[2].

The sources describe fecal-oral transmission as the principal mechanism, most commonly through contaminated water or tainted food ^[1][2]. Direct contamination is described as rare, and vertical transmission from mother to fetus can also occur ^[1]. The material further notes that humans and probably a few animal species maintain dissemination by the fecal route, but it does not provide additional transmission details for the umbrella code itself ^[1].

Source-backed higher-risk groups include people in hepatitis E-endemic areas, populations exposed to poor sanitation and contaminated water, and pregnant women, in whom fulminant disease is reported more often ^[2][1]. The sources also mention preferential involvement of adolescents and young adults in outbreaks, and asymptomatic infection being common especially in children ^[1]. No additional risk-group stratification for the broader umbrella code is provided in the payload ^[1][2].

The source material supports exposure control through sanitation-related measures, because disease transmission is linked to contaminated water and tainted food in settings with poor sanitation ^[2][1]. No vaccine schedule, prophylaxis regimen, or specific prevention protocol is provided in the supplied snippets, so source-backed detail beyond sanitation and avoidance of fecal contamination is not yet available ^[1][2]. The evidence also implies that prevention is particularly relevant in endemic and outbreak settings where waterborne spread is documented ^[1][2].

In surveillance use, this code should be read cautiously as a broad acute viral hepatitis category with limited etiologic specificity in the supplied record ^[3]. The strongest source-backed signal in the payload is hepatitis E, which is associated with endemic transmission, large outbreaks, and occasional severe disease in pregnancy, so these features may be important when interpreting compatible notifications ^[1][2]. However, the code itself does not establish hepatitis E as the only cause, and source-backed detail for other etiologies included under this label is not yet available ^[1][3].

1. 1 Molinié C et al. [Viral hepatitis E]. Med Trop (Mars). 1996. PMID: 9026599. PubMed: https://pubmed.ncbi.nlm.nih.gov/9026599/
2. 2 Pérez-Gracia MT et al. Hepatitis E and pregnancy: current state. Rev Med Virol. 2017 May. PMID: 28318080. doi: 10.1002/rmv.1929. PubMed: https://pubmed.ncbi.nlm.nih.gov/28318080/
3. 3 Viral Hepatitis: Other Viral Hepatides. Liver Disorders. 2016. doi: 10.1007/978-3-319-30103-7_12. DOI: https://doi.org/10.1007/978-3-319-30103-7_12
4. 4 Acute Viral Hepatitis: Hepatitis A, Hepatitis E, and Other Viruses. Practical Gastroenterology and Hepatology: Liver and Biliary Disease. 2010. doi: 10.1002/9781444325249.ch18. DOI: https://doi.org/10.1002/9781444325249.ch18
5. 5 Acute Viral Hepatitis: Hepatitis A, Hepatitis E, and Other Viruses. Practical Gastroenterology and Hepatology Board Review Toolkit. 2016. doi: 10.1002/9781119127437.ch75. DOI: https://doi.org/10.1002/9781119127437.ch75
6. 6 Goodman ZD et al. Histopathology of hepatitis C virus infection. Semin Liver Dis. 1995 Feb. PMID: 7597446. doi: 10.1055/s-2007-1007264. PubMed: https://pubmed.ncbi.nlm.nih.gov/7597446/

ICD-10

B17

ICD-11

1E50.2

Total cases

0

Peak month

—

Coverage

0 reporting countries · —