Multisystem inflammatory syndrome

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2021 onwards.

What has happened to this code

Every change the publisher made, from 2021 to now.

January 2021 Added to the code set Multisystem inflammatory syndrome

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from M35 Other systemic involvement of connective tissue

Excludes1 - never coded here

reactive perforating collagenosis (L87.1)

Inherited from the M30-M36 section Systemic connective tissue disorders (M30-M36)

Excludes1 - never coded here

autoimmune disease, single organ or single cell-type -code to relevant condition category

Includes

autoimmune disease NOS
collagen (vascular) disease NOS
systemic autoimmune disease
systemic collagen (vascular) disease

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

PIMS
MIS-A
MIS-C
Multisystem inflammatory syndrome
Syndrome > multisystem inflammatory
Pediatric inflammatory multisystem syndrome
Syndrome > pediatric inflammatory multisystem

Codes in the same group

Code	Description	Status
M35.89	Other specified systemic involvement of connective tissue	Valid