Q74.1
Billable codeCongenital malformation of knee
The ICD-10 code for congenital malformation of knee is Q74.1.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Congenital absence of patella
- Congenital dislocation of patella
- Congenital genu valgum
- Congenital genu varum
- Rudimentary patella
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Q74.0Other congenital malformations of upper limb(s), including shoulder girdle
- Q74.2Other congenital malformations of lower limb(s), including pelvic girdle
- Q74.3Arthrogryposis multiplex congenita
- Q74.8Other specified congenital malformations of limb(s)
- Q74.9Unspecified congenital malformation of limb(s)
- Q74.1Congenital malformation of knee
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 75564Approximate match
Associated MS-DRGs
Q74.1 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.