ICD-10-CM 2027
ICD-10 code for vaccination complication
Other complications following immunization, not elsewhere classified
From the official ICD-10-CM alphabetic index entry “Complication (s) (from) (of) › vaccination”. Page updated September 29, 2026.
About coding vaccination complication
The ICD-10-CM code for vaccination complication is T88.1 (Other complications following immunization, not elsewhere classified). The official index lists 15 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 vaccination complication codes (official index)
- anaphylaxis NEC T80.52 — Anaphylactic reaction due to vaccination
- arthropathy
- cellulitis T88.0 — Infection following immunization
- encephalitis or encephalomyelitis G04.02 — Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
- infection (general) (local) NEC T88.0 — Infection following immunization
- meningitis G03.8 — Meningitis due to other specified causes
- myelitis G04.02 — Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
- protein sickness T80.62 — Other serum reaction due to vaccination
- rash T88.1 — Other complications following immunization, not elsewhere classified
- reaction (allergic) T88.1 — Other complications following immunization, not elsewhere classified
- serum T80.62 — Other serum reaction due to vaccination
- sepsis T88.0 — Infection following immunization
- serum intoxication, sickness, rash, or other serum reaction NEC T80.62 — Other serum reaction due to vaccination
- anaphylactic shock T80.52 — Anaphylactic reaction due to vaccination
- shock (allergic) (anaphylactic) T80.52 — Anaphylactic reaction due to vaccination
- vaccinia (generalized) (localized) T88.1 — Other complications following immunization, not elsewhere classified
Don't confuse with (Excludes1 for T88.1)
- vaccinia not from vaccine (B08.011)
Common questions about vaccination complication ICD-10 codes
What is the ICD-10 code for vaccination complication?
- 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: T80.52, T88.0, G04.02, T88.0 and others below.
What is the ICD-10 code for anaphylaxis nec vaccination complication?
- T80.52 — Anaphylactic reaction due to vaccination (header code; choose a more specific subcode).
What is the ICD-10 code for cellulitis vaccination complication?
- T88.0 — Infection following immunization (header code; choose a more specific subcode).
What is the ICD-10 code for encephalitis or encephalomyelitis vaccination complication?
- G04.02 — Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis.
What is the ICD-10 code for infection nec vaccination complication?
- T88.0 — Infection following immunization (header code; choose a more specific subcode).
What is the ICD-10 code for meningitis vaccination complication?
- G03.8 — Meningitis due to other specified causes.
What is the ICD-10 code for myelitis vaccination complication?
- G04.02 — Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis.
Is T88.1 billable?
- No. T88.1 is a header code. Report one of its more specific subcodes instead.