2021

  1. ICD-10-CM Codes
    2. ›
  2. Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities
    3. ›
  3. Q65-Q79 Congenital malformations and deformations of the musculoskeletal system
    4. ›
  4. Q74- Other congenital malformations of limb(s)
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code Q74.1

2021 ICD-10-CM Diagnosis Code Q74.1

Congenital malformation of knee

    2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
  • Q74.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM Q74.1 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of Q74.1 - other international versions of ICD-10 Q74.1 may differ.
Applicable To
  • Congenital absence of patella
  • Congenital dislocation of patella
  • Congenital genu valgum
  • Congenital genu varum
  • Rudimentary patella
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Q74.1. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • congenital dislocation of knee (
    ICD-10-CM Diagnosis Code Q68.2

    Congenital deformity of knee

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital dislocation of knee
    • Congenital genu recurvatum
    Q68.2
    )
  • congenital genu recurvatum (
    ICD-10-CM Diagnosis Code Q68.2

    Congenital deformity of knee

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital dislocation of knee
    • Congenital genu recurvatum
    Q68.2
    )
  • nail patella syndrome (
    ICD-10-CM Diagnosis Code Q87.2

    Congenital malformation syndromes predominantly involving limbs

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Holt-Oram syndrome
    • Klippel-Trenaunay-Weber syndrome
    • Nail patella syndrome
    • Rubinstein-Taybi syndrome
    • Sirenomelia syndrome
    • Thrombocytopenia with absent radius [TAR] syndrome
    • VATER syndrome
    Q87.2
    )
The following code(s) above Q74.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Q74.1:
  • Q00-Q99
    2021 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • Codes from this chapter are not for use on maternal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
  • Q74
    ICD-10-CM Diagnosis Code Q74

    Other congenital malformations of limb(s)

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Other congenital malformations of limb(s)
Approximate Synonyms
  • Bifid patella
  • Bipartite patella (kneecap)
  • Congenital bilateral genu valgum
  • Congenital bilateral genu varum
  • Congenital dislocation of bilateral patella
  • Congenital dislocation of bilateral patellae
  • Congenital dislocation of left patella
  • Congenital dislocation of patella
  • Congenital dislocation of right patella
  • Congenital dislocation patella (kneecap)
  • Congenital genu valgum
  • Congenital genu valgum of bilateral knees
  • Congenital genu valgum of left knee
  • Congenital genu valgum of right knee
  • Congenital genu valgum, both sides
  • Congenital genu varum
  • Congenital left genu valgum
  • Congenital left genu varum
  • Congenital right genu valgum
  • Congenital right genu varum
  • Genu valgum, congenital
  • Genu varum, congenital
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • Q74.1 is considered exempt from POA reporting.
ICD-10-CM Q74.1 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 564 Other musculoskeletal system and connective tissue diagnoses with mcc
  • 565 Other musculoskeletal system and connective tissue diagnoses with cc
  • 566 Other musculoskeletal system and connective tissue diagnoses without cc/mcc

Convert Q74.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to Q74.1:
  • Absence (of) (organ or part) (complete or partial)
    • patella, congenital Q74.1
  • Agenesis
    • patella Q74.1
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • knee Q74.1
    • patella Q74.1
  • Bifid (congenital)
    • patella Q74.1
  • Biparta, bipartite
    • patella Q74.1
  • Dislocation (articular)
    • patella S83.006
      ICD-10-CM Diagnosis Code S83.006

      Unspecified dislocation of unspecified patella

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      • congenital Q74.1
  • Elongated, elongation (congenital) - see also Distortion
    • ligamentum patellae Q74.1
  • Genu
    • extrorsum (acquired) - see also Deformity, varus, knee
      • congenital Q74.1
    • introrsum (acquired) - see also Deformity, valgus, knee
      • congenital Q74.1
    • valgum (acquired) (knock-knee) M21.06-
      ICD-10-CM Diagnosis Code M21.06-

      Valgus deformity, not elsewhere classified, knee

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      Applicable To
      • Genu valgum
      • Knock knee
      • congenital Q74.1
    • varum (acquired) (bowleg) M21.16-
      ICD-10-CM Diagnosis Code M21.16-

      Varus deformity, not elsewhere classified, knee

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      Applicable To
      • Bow leg
      • Genu varum
      • congenital Q74.1
    • congenital Q74.1
  • Hypertrophy, hypertrophic
    • meniscus, knee, congenital Q74.1
  • Hypoplasia, hypoplastic
    • patella Q74.1
  • Knock knee (acquired) M21.06-
    ICD-10-CM Diagnosis Code M21.06-

    Valgus deformity, not elsewhere classified, knee

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Genu valgum
    • Knock knee
    • congenital Q74.1
  • Malposition
  • Rudimentary (congenital) - see also Agenesis
    • patella Q74.1

ICD-10-CM Codes Adjacent To Q74.1
Q72.90 Unspecified reduction defect of unspecified lower limb
Q72.91 Unspecified reduction defect of right lower limb
Q72.92 Unspecified reduction defect of left lower limb
Q72.93 …… bilateral
Q73 Reduction defects of unspecified limb
Q73.0 Congenital absence of unspecified limb(s)
Q73.1 Phocomelia, unspecified limb(s)
Q73.8 Other reduction defects of unspecified limb(s)
Q74 Other congenital malformations of limb(s)
Q74.0 Other congenital malformations of upper limb(s), including shoulder girdle
Q74.1 Congenital malformation of knee
Q74.2 Other congenital malformations of lower limb(s), including pelvic girdle
Q74.3 Arthrogryposis multiplex congenita
Q74.8 Other specified congenital malformations of limb(s)
Q74.9 Unspecified congenital malformation of limb(s)
Q75 Other congenital malformations of skull and face bones
Q75.0 Craniosynostosis
Q75.1 Craniofacial dysostosis
Q75.2 Hypertelorism
Q75.3 Macrocephaly
Q75.4 Mandibulofacial dysostosis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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