2024 ICD-10-CM Diagnosis Code B03

by

Smallpox

  • B03 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM B03 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of B03 – other international versions of ICD-10 B03 may differ.

Note

  • In 1980 the 33rd World Health Assembly declared that smallpox had been eradicated.
  • The classification is maintained for surveillance purposes.

The following code(s) above B03 contain annotation back-references

 that may be applicable to B03:

  • A00-B99  Certain infectious and parasitic diseases

Clinical Information

  • An acute, highly contagious, often fatal infectious disease caused by an orthopoxvirus characterized by a biphasic febrile course and distinctive progressive skin eruptions. Vaccination has succeeded in eradicating smallpox worldwide. (Dorland, 28th ed)
  • Smallpox is a disease caused by the variola major virus. Some experts say that over the centuries it has killed more people than all other infectious diseases combined. Worldwide immunization stopped the spread of smallpox three decades ago. The last case was reported in 1977. Two research labs still house small amounts of the virus. Experts fear bioterrorists could use the virus to spread disease.smallpox spreads very easily from person to person. Symptoms are flu-like and include high fever, fatigue and headache and backache, followed by a rash with flat red sores. The United States Stopped routine smallpox vaccinations in 1972. Military and other high-risk groups continue to get the vaccine. The United States Has increased its supply of the vaccine in recent years. The vaccine makes some people sick, so doctors save it for those at highest risk of disease.

ICD-10-CM B03 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 865 Viral illness with mcc
  • 866 Viral illness without mcc

Convert B03 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to B03:

  • Alastrim B03
  • Smallpox B03
  • Variola B03 (major) (minor)
  • Varioloid B03