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ICD-10 Code Q74.1: Congenital malformation of knee

Q74.1 is a billable ICD-10 diagnosis code used to classify Congenital malformation of knee in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0).

When is it used?

  • May be used when a clinician documents congenital malformation of knee in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
17Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0)
block
Q65-Q79Congenital malformations and deformations of the musculoskeletal system
category
Q74Other congenital malformations of limb(s)
currentQ74

Official coding notes

Inclusion terms
  • Congenital absence of patella
  • Congenital dislocation of patella
  • Congenital genu valgum
  • Congenital genu varum
  • Rudimentary patella
Excludes1 (do not code together)
  • congenital dislocation of knee (Q68.2)
  • congenital genu recurvatum (Q68.2)
  • nail patella syndrome (Q87.2)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
Q74.1

Common synonyms

Congenital malformation of knee

Frequently asked questions

Code details

CodeQ74.1
SystemICD10
Display nameCongenital malformation of knee
ChapterCongenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0)
BlockCongenital malformations and deformations of the musculoskeletal system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Absence(of) (organ or part) (complete or partial)AgenesisAnomaly, anomalous(congenital) (unspecified type)Anomaly, anomalous(congenital) (unspecified type)Bifid(congenital)Biparta, bipartiteDislocation(articular)Elongated, elongation(congenital)GenuGenuGenuGenu

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code Q74.1 for Congenital malformation of knee | HealthAssure