ICD-10-CM 2027
ICD-10 code for Cowpox
From the official ICD-10-CM alphabetic index entry “Cowpox”. Page updated September 29, 2026.
About coding Cowpox
The ICD-10-CM code for Cowpox is B08.010 (Cowpox). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on B08.010.
Within B08.01 (Cowpox and vaccinia not from vaccine), B08.010 is specifically for Cowpox. Related codes cover vaccinia not from vaccine (B08.011).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 865 (Viral Illness with MCC, relative weight 1.3485) and DRG 866 (Viral Illness without MCC, relative weight 0.8692), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Cowpox codes (official index)
- due to vaccination T88.1 — Other complications following immunization, not elsewhere classified
Common questions about Cowpox ICD-10 codes
What is the ICD-10 code for Cowpox?
- B08.010 — Cowpox. More specific codes apply when the documentation supports them: T88.1.
Is B08.010 billable?
- Yes. B08.010 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B08.010 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B08.010 as a principal diagnosis.
Is B08.010 a CC or MCC?
- No. B08.010 is neither a CC nor an MCC under MS-DRG v44.0.