T78.2

ICD-10Non-billable category

Anaphylactic shock, unspecified

Official ICD-10-CM descriptor (FY2026)

Anaphylactic shock, unspecified

T78.2 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

  • Allergic shock
  • Anaphylactic reaction
  • Anaphylaxis

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • anaphylactic reaction or shock due to adverse effect of correct medicinal substance properly administered (T88.6)
  • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
  • anaphylactic reaction or shock due to serum (T80.5-)

Related codes in T78

Where this code sits

Parent code
T78

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Source

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.

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