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B03 - Smallpox


The ICD 10 Code for Smallpox is listed as B03.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: B03
Description: Smallpox
  • Note: In 1980 the 33rd World Health Assembly declared that smallpox had been eradicated.
  • The classification is maintained for surveillance purposes.
Diagnostic Related Groups
(MS-DRG v30.0)
865 - Viral Illness W Mcc
866 - Viral Illness W/o Mcc
Chapter Certain infectious and parasitic diseases (A00-B99)
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 050.0 - Variola major (approximate)
ICD 9 Dx Code: 050.1 - Alastrim (approximate)
ICD 9 Dx Code: 050.9 - Smallpox, unspecified (approximate)