ICD-10-CM 2027
ICD-10 code for Paravaccinia NEC
From the official ICD-10-CM alphabetic index entry “Paravaccinia NEC”. Page updated September 29, 2026.
About coding Paravaccinia NEC
The ICD-10-CM code for Paravaccinia NEC is B08.04 (Paravaccinia, unspecified).
Within B08.0, choose B08.04 (Paravaccinia, unspecified) only when documentation doesn't support a more specific option: Cowpox and vaccinia not from vaccine (B08.01), Orf virus disease (B08.02), Pseudocowpox [milker's node] (B08.03) and other orthopoxvirus infections (B08.09).
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.
Common questions about Paravaccinia NEC ICD-10 codes
What is the ICD-10 code for Paravaccinia NEC?
- B08.04 — Paravaccinia, unspecified.
Is B08.04 billable?
- Yes. B08.04 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B08.04 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B08.04 as a principal diagnosis.
Is B08.04 a CC or MCC?
- No. B08.04 is neither a CC nor an MCC under MS-DRG v44.0.