A08.31
✓ Billable
Calicivirus enteritis
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
A08.31
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code A08.31?
ICD-10-CM code A08.31 represents Calicivirus enteritis. It is a billable diagnosis code in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A08.31 billable?
Yes. A08.31 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is A08.31 in?
A08.31 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
Related codes in the A08 category
A08
Viral and other specified intestinal infections
Non-billable
A08.0
Rotaviral enteritis
Billable
A08.1
Acute gastroenteropathy due to Norwalk agent and other small round viruses
Non-billable
A08.2
Adenoviral enteritis
Billable
A08.3
Other viral enteritis
Non-billable
A08.4
Viral intestinal infection, unspecified
Billable
A08.8
Other specified intestinal infections
Billable
A08.11
Acute gastroenteropathy due to Norwalk agent
Billable
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