2026 ICD-10-CM Diagnosis Code B08.011Vaccinia not from vaccine
ICD-10-CM Codes›A00–B99›B00-B09›B08
- Billable — Valid for Submission
- Not Chronic
B08.011 is a billable ICD-10-CM diagnosis code for vaccinia not from vaccine. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 865 through 866. Coders also document this condition as transmission of Vaccinia virus from another person due to contact with smallpox vaccination site. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Transmission of Vaccinia virus from another person due to contact with smallpox vaccination site
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- vaccinia from vaccination generalized T88.1
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Vaccinia (generalized) (localized) - T88.1
- without vaccination - B08.011
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Infection, infected, infective(opportunistic)
- vaccinia not from vaccination
- Vaccinia(generalized) (localized)
- without vaccination
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Viral Infections
Viruses are very tiny germs. They are made of genetic material (either DNA or RNA) inside of a protein coating. There are a huge number of viruses on earth. Only a small number of them can infect humans. Those viruses can infect our cells, which may cause disease.
The full article covers:
- What are viruses?
- How are viruses spread?
- How do viruses cause disease?
- What are the treatments for viral infections?
- Can viral infections be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B08.011 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B08.011Overview
Is B08.011 (Cowpox and vaccinia not from vaccine) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report vaccinia not from vaccine on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does B08.011 group to?
When vaccinia not from vaccine is the principal diagnosis on an inpatient stay, it groups to MS-DRG 865, 866, with relative weights from 0.8696 to 1.4983 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of B08.011?
Under the General Equivalence Mappings, vaccinia not from vaccine converts to ICD-9-CM 051.02 (vaccinia n/f vaccination). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
