B03
BillableSmallpox
Smallpox
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(50)
SNOMED CT
- Classical smallpox47452006
- Ordinary smallpox47452006
- Variola major47452006
- Modified smallpox51423006
- Smallpox67924001
- Variola67924001
- Alastrim72294005
- Amaas72294005
- Kaffir pox72294005
- Variola minor72294005
- Smallpox without rash74724001
- Variola sine eruptione74724001
- Varioloid74724001
- Flat-type smallpox86497005
- Malignant smallpox86497005
- Haemorrhagic smallpox409641002
- Hemorrhagic smallpox409641002
- Purpura variolosa409641002
UMLS
Clinical Terms
- Smallpox without rash
- Smallpox (disorder)
- Ordinary smallpox
- Variola minor
- Modified smallpox
- Alastrim
- Malignant smallpox
- Varioloid
- Flat-type smallpox
- variola major
- Variola sine eruptione
- Variola
- Hemorrhagic smallpox
- Purpura variolosa
- Classical smallpox
- Variolas
- smallpox disease
- Haemorrhagic smallpox
- Kaffir pox
- Amaas
- Smallpox, unspecified
Frequently Asked Questions
What is the ICD-10 code for smallpox?
The ICD-10-CM code for smallpox is B03. The full clinical description is "Smallpox". B03 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code B03 mean?
ICD-10-CM code B03 represents “Smallpox”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a billable/specific code that can be used on a claim.
Is B03 a billable code?
Yes, B03 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is B03 in?
B03 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with B03?
B03 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters.
Are additional codes required with B03?
Yes, when using B03, also report: resistance to antimicrobial drugs (Z16.-).
What SNOMED CT codes does B03 map to?
B03 maps to 7 SNOMED CT concepts: 72294005, 47452006, 86497005, 409641002, 51423006, and 2 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for B03?
B03 is linked to 1 UMLS Concept Unique Identifier: C0037354. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does B03 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like smallpox affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of B03?
B03 maps to the ICD-11 code: 1E70 (Smallpox).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.