MCMedicalCodingSoftware
B03

B03: Smallpox

Billable / specific codeICD-10-CM

B03 is a billable, specific ICD-10-CM code for smallpox. It is valid for submission on a claim.

Check B03 with the rest of the claim: free scrubber

Notes

Additional guidance from the ICD-10-CM tabular list.

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

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

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

Code history

Unchanged in every release from FY2024 to FY2027.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.