Q74.1

Congenital malformation of knee

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · Q74.1

Excludes 1

congenital dislocation of knee (Q68.2) congenital genu recurvatum (Q68.2) nail patella syndrome (Q87.2)

Synonyms

Congenital absence of patella Congenital dislocation of patella Congenital genu valgum Congenital genu varum Rudimentary patella

Inherited from Q74Other congenital malformations of limb(s)

Excludes 1

polydactyly (Q69.-) reduction defect of limb (Q71-Q73) syndactyly (Q70.-)

Inherited from chapter 17Congenital malformations, deformations and chromosomal abnormalities

Excludes 2

inborn errors of metabolism (E70-E88)

Note

Codes from this chapter are not for use on maternal records

Sections that reference Q74.1

Sections whose FY 2026 text names Q74.1, its Q74 category, or a range containing it — the chapter guidance above is the authoritative source.

18 index paths lead to this code