B18 — Chronic viral hepatitis
Is B18 billable?
No — B18 is a non-billable header code. B18 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 5 billable codes beneath B18.
B18 at a glance
| Code | B18 |
|---|---|
| Description | Chronic viral hepatitis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code
Report an additional code alongside B18 to fully describe the condition. B18 is sequenced first.
- code, if applicable, for ascites (R18.8)
Includes
Conditions classified to B18.
- Carrier of viral hepatitis
Excludes1 — never code together — inherited from B15-B19
The conditions below can never be reported together with B18 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- sequelae of viral hepatitis (B94.2)
Use additional code — inherited from Chapter 1
Report an additional code alongside B18 to fully describe the condition. B18 is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here — inherited from Chapter 1
The conditions below are not part of B18, but a patient may have both at the same time. When documentation supports it, B18 and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Excludes2 — not included here — inherited from B15-B19
The conditions below are not part of B18, but a patient may have both at the same time. When documentation supports it, B18 and the excluded code may both be reported.
What codes fall under B18? (5)
How long has B18 existed?
B18 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.