Appendix B
Congenital Code Groups by ICD-9-CM/ICD-10-CM Diagnosis Codes

Congenital Infection ICD-9-CM ICD-10-CM
Cytomegalovirus (CMV) 771.1 P35.1
Herpes Simplex P35.2
Rubella 771.0 P35.0
Syphilis 090, 090.0-090.49, 090.9 A50.01-A50.09, A50.1, A50.45, A50.31, A50.40, A50.42, A50.45. A50.9
Toxoplasmosis P37.1
Other Congenital Infections* 771.2 P35.0, P35.1, P35.2, P35.3, P35.8, P35.9, P37.0, P37.2, P37.3, P37.4, P37.5, P37.8, P37.9
Zika Virus** P35.4



ICD-9-CM was used to classify cases reported before October 2015.

In ICD-9-CM, certain rare congenital infections are categorized under: 771.2 Other congenital infections, and cannot be differentiated.

"*" P35.0 - Congenital rubella syndrome, P35.1 - Congenital cytomegalovirus infection, P35.2 - Congenital herpes viral [herpes simplex] infection, P35.3 - Congenital vital hepatitis, P35.8 - Other congenital viral diseases, P35.9 - Congenital viral disease, unspecified, P37.0 - Other congenital infectious and parasitic diseases, P37.1 - Congenital toxoplasmosis, P37.2 - Neonatal (disseminated) listeriosis, P37.3 - Congenital falciparum malaria, P37.4 - Other congenital malaria, P37.5 - Neonatal candidiasis, P37.8 - Other specified congenital infectious and parasitic diseases, P37.9 - Congenital infectious or parasitic disease, unspecified

"**" Effective 10-01-2018

Birth defect statistics sometimes reflect trends related to data reporting or new testing. See Data Quality Considerations for further details.
Source: Michigan Birth Defects Registry, Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services
Reports Processed through May 28, 2022

Last Updated on May 1, 2022