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U07.3 ICD-10-CA code: Multisystem inflammatory syndrome associated with COVID-19

U07.3 is the ICD-10-CA code for “Multisystem inflammatory syndrome associated with COVID-19” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

U07.3

Multisystem inflammatory syndrome associated with COVID-19

Short description: Multisys inflam syndr assoc w COVID-19

ICD-10-CA · Canada · Also written U073

Index terms

Entries in CIHI’s alphabetical index that lead to U07.3. Searching the index by the condition the note names is how coders reach this code.

  • Storm, cytokine storm, associated with COVID-19
  • Syndrome, kawasaki-like, associated with COVID-19
  • Syndrome, cytokine storm, associated with COVID-19
  • Syndrome, pediatric inflammatory multisystem (PIMS)
  • Syndrome, multisystem inflammatory, associated with COVID-19 (adult) (child)
  • Multisystem inflammatory syndrome associated with COVID-19 (in adults (MIS-A)) (in children (MIS-C))

Notes for U07.3

As CIHI prints them, with any note U07.3 takes from the headings above it.

Includes

  • Cytokine storm (syndrome), Kawasaki-like syndrome, Paedriatric Inflammatory Multisystem Syndrome [PIMS], Multisystem Inflammatory Syndrome in Children [MIS-C] — temporally associated with COVID-19
  • Codes U00-U49 are to be used by WHO for the provisional assignment of new diseases of uncertain etiology. In emergency situations codes are not always accessible in electronic systems. The specification of categories U07 in the way it is done here will make sure this category and the subcategories are available in every electronic system at any time and that they can be used upon instruction by WHO, immediately.From U07 Emergency use of U07

Excludes

Conditions classified elsewhere.

  • Mucocutaneous lymph node syndrome [Kawasaki] (M30.3)

Where U07.3 sits

  1. 1ChapterChapter 23: Provisional Codes for Research and Temporary Assignment
  2. 2Block U00-U49Provisional codes for temporary assignment by World Health Organization of new diseases of uncertain etiology or emergency use
  3. 3Category U07Emergency use of U07
  4. 4Valid code U07.3Multisystem inflammatory syndrome associated with COVID-19

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See U07.3 in the CIHI source

Frequently asked questions

What does ICD-10-CA code U07.3 mean?

U07.3 is the ICD-10-CA code for “Multisystem inflammatory syndrome associated with COVID-19” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is U07.3 in ICD-10-CA?

U07.3 sits under U07 Emergency use of U07, within U00-U49 Provisional codes for temporary assignment by World Health Organization of new diseases of uncertain etiology or emergency use, within Chapter 23: Provisional Codes for Research and Temporary Assignment.

What coding notes apply to U07.3?

ICD-10-CA lists Includes, Excludes notes for U07.3, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside U07.3

U07.0Vaping-related disorderU07.1Coronavirus disease 2019 [COVID-19], virus identifiedU07.2Coronavirus disease 2019 [COVID-19], virus not identifiedU07.4Post COVID-19 conditionU07.5Personal history of COVID-19U07.6Need for immunization against COVID-19U07.7COVID-19 vaccines causing adverse effects in therapeutic use