T88.1
ICD-10Non-billable categoryOth complications following immunization, NEC
Official ICD-10-CM descriptor (FY2026)
Other complications following immunization, not elsewhere classified
T88.1 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Inclusion terms
- Generalized vaccinia
- Rash following immunization
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- vaccinia not from vaccine (B08.011)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- anaphylactic shock due to serum (T80.5-)
- other serum reactions (T80.6-)
- postimmunization arthropathy (M02.2)
- postimmunization encephalitis (G04.02)
- postimmunization fever (R50.83)
Related codes in T88
- T88.0Infection following immunizationcategory
- T88.2Shock due to anesthesiacategory
- T88.3Malignant hyperthermia due to anesthesiacategory
- T88.4Failed or difficult intubationcategory
- T88.5Other complications of anesthesiacategory
- T88.6Anaphylactic reaction due to advrs eff drug/med prop admincategory
- T88.7Unspecified adverse effect of drug or medicamentcategory
- T88.8Oth complications of surgical and medical care, NECcategory
- T88.9Complication of surgical and medical care, unspecifiedcategory
Where this code sits
- Parent code
- T88
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.