B15 – Acute hepatitis A

ICD-10-CM 2027 diagnosis code · Viral hepatitis

Non-billable header

ICD-10-CM code B15
Code
B15 (claims format: B15)
Description
Acute hepatitis A
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
1. Certain infectious and parasitic diseases (A00-B99)
Block
B15-B19 Viral hepatitis

Billable codes under B15

B15 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block B15-B19

Excludes1 (not coded here):
  • sequelae of viral hepatitis (B94.2)
Excludes2 (not included here):
  • cytomegaloviral hepatitis (B25.1)
  • herpesviral [herpes simplex] hepatitis (B00.81)

Frequently asked questions

What is ICD-10 code B15?

B15 is the ICD-10-CM code for acute hepatitis A, in the block B15-B19 (Viral hepatitis).

Is B15 a billable code?

No. B15 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.