Cytomegaloviral (CMV) infections

Created Dec 2015
Reviewed Dec 2019


Should a code to indicate the site of the infection (e.g. bronchiolitis) be assigned in addition to B25.- Cytomegaloviral disease when there is no subterm for the site of the infection listed under CMV infection in the ICD-10-AM Alphabetic Index?


Yes.  In the ICD-10-AM Alphabetic Index follow the lead term for the site of the infection where the site is documented (e.g. bronchiolitis).  Under the lead term look for a subterm (essential modifier) for CMV, if one is not present add an appropriate code from category B25.- Cytomegaloviral disease.

Bronchiolitis (acute) (infective) (subacute) J21.9
- due to
- - chemicals (chronic) (gases, fumes or vapours) J68.4
- - external agent NEC J70.8
- - human metapneumovirus J21.1
- - radiation J70.0
- - respiratory syncytial virus J21.0
- - specified organism NEC J21.8

Infection, infected (opportunistic) (see also Infestation) B99

- cytomegalovirus, cytomegaloviral B25.9
- - congenital P35.1
- - maternal care for damage to fetus (suspected) O35.3
- - mononucleosis B27.1
- - resulting from HIV disease B20
- - specified NEC B25.8


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