Chronic viral hepatitis (B18)
The ICD-10 codes B18 through B18.9 classify various forms of chronic viral hepatitis, a long-lasting infection of the liver caused by hepatitis viruses. These codes help specifically identify and differentiate types of chronic hepatitis B, C, and other viral forms, including details about co-infections like the delta agent.
These codes are used to document ongoing liver infections that persist beyond the acute stage. For example, B18.0 describes chronic hepatitis B with the delta agent (also known as hepatitis D), while B18.1 covers chronic hepatitis B without delta. The synonyms associated with B18.1; such as "hepatic coma due to viral hepatitis B" or "chronic aggressive viral hepatitis"; clarify its use for chronic active infections and even pregnancy complications. B18.2 refers to chronic hepatitis C, with many related terms like "chronic hepatitis C with stage fibrosis" or “hepatic coma due to chronic hepatitis C,” helping guide coders when more specific viral genotypes or complications are present. Other viral types and mixed infections fall under B18.8, while B18.9 is reserved for unspecified chronic viral hepatitis. Understanding this range ensures precise coding for long-term viral liver diseases using the ICD-10 code for chronic viral hepatitis.
Instructional Notations
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- Carrier of viral hepatitis
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Cryoglobulinemia
A condition characterized by the presence of abnormal quantities of CRYOGLOBULINS in the blood. Upon cold exposure, these abnormal proteins precipitate into the microvasculature leading to restricted blood flow in the exposed areas.
Cryoglobulins
Abnormal immunoglobulins, especially IGG or IGM, that precipitate spontaneously when SERUM is cooled below 37 degrees Celsius. It is characteristic of CRYOGLOBULINEMIA.
