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ICD-10-CM 2027

ICD-10 code for vaccinia

T88.1

Other complications following immunization, not elsewhere classified

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Vaccinia (generalized) (localized)”. Page updated September 29, 2026.

About coding vaccinia

The ICD-10-CM code for vaccinia is T88.1 (Other complications following immunization, not elsewhere classified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on T88.1.

Within T88, choose T88.1 (Other complications following immunization, not elsewhere classified) only when documentation doesn't support a more specific option: infection following immunization (T88.0), shock due to anesthesia (T88.2), malignant hyperthermia due to anesthesia (T88.3), failed or difficult intubation (T88.4), other complications of anesthesia (T88.5), anaphylactic reaction due to adverse effect of correct drug or medicament properly administered (T88.6), unspecified adverse effect of drug or medicament (T88.7), other specified complications of surgical and medical care, not elsewhere classified (T88.8) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Don't report T88.1 together with the conditions in its Excludes1 note: vaccinia not from vaccine (B08.011).

More specific vaccinia codes (official index)

  • congenital P35.8 — Other congenital viral diseases
  • without vaccination B08.011 — Vaccinia not from vaccine

Don't confuse with (Excludes1 for T88.1)

  • vaccinia not from vaccine (B08.011)

Common questions about vaccinia ICD-10 codes

What is the ICD-10 code for vaccinia?

T88.1 — Other complications following immunization, not elsewhere classified (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: P35.8, B08.011.

What is the ICD-10 code for congenital vaccinia?

P35.8 — Other congenital viral diseases.

Is T88.1 billable?

No. T88.1 is a header code. Report one of its more specific subcodes instead.