Q87.4Marfan syndrome

Q87.4 is the ICD-10-CM diagnosis code for Marfan syndrome. It belongs to category Q87 (other specified congenital malformation syndromes affecting multiple systems), block Q80-Q89 (other congenital malformations) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within Q87 (other specified congenital malformation syndromes affecting multiple systems), Q87.4 is specifically for Marfan syndrome. Related codes cover congenital malformation syndromes predominantly affecting facial appearance (Q87.0), congenital malformation syndromes predominantly associated with short stature (Q87.1), congenital malformation syndromes predominantly involving limbs (Q87.2), congenital malformation syndromes involving early overgrowth (Q87.3), other congenital malformation syndromes with other skeletal changes (Q87.5), other specified congenital malformation syndromes, not elsewhere classified (Q87.8) and Loeys-Dietz syndrome (Q87.A).

To report this condition, pick the subcode that matches the documentation: Q87.40 (unspecified), Q87.41 (with cardiovascular manifestations), Q87.42 (with ocular manifestations) and Q87.43 (with skeletal manifestation).

Use an additional code(s) to identify all associated manifestations.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2024 (title revised).