Q79Congenital malformations of musculoskeletal system, not elsewhere classified

Q79 is the ICD-10-CM diagnosis code for congenital malformations of musculoskeletal system, not elsewhere classified. It belongs to block Q65-Q79 (congenital malformations and deformations of the musculoskeletal system) 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 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Q79.0 (hernia), Q79.1 (diaphragm), Q79.2 (Exomphalos), Q79.3 (gastroschisis), Q79.4 (syndrome), Q79.5 (wall), Q79.6 (syndromes), Q79.8 (system) and 1 more.

The conditions in its Excludes2 note aren't part of Q79, but may be coded alongside it if the patient has both: congenital (sternomastoid) torticollis (Q68.0).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.