2021 ICD-10-CM Diagnosis Code Q77.4

Achondroplasia

    2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
  • Q77.4 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 Q77.4 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of Q77.4 - other international versions of ICD-10 Q77.4 may differ.
Applicable To
  • Hypochondroplasia
  • Osteosclerosis congenita
The following code(s) above Q77.4 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 Q77.4:
  • 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
  • Q77
    ICD-10-CM Diagnosis Code Q77

    Osteochondrodysplasia with defects of growth of tubular bones and spine

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Type 2 Excludes
    • congenital myotonic chondrodystrophy (G71.13)
    Osteochondrodysplasia with defects of growth of tubular bones and spine
Approximate Synonyms
  • Hypochondroplasia
Clinical Information
  • An autosomal dominant disorder that is the most frequent form of short-limb dwarfism. Affected individuals exhibit short stature caused by rhizomelic shortening of the limbs, characteristic facies with frontal bossing and mid-face hypoplasia, exaggerated lumbar lordosis, limitation of elbow extension, genu varum, and trident hand. (mesh)
  • An autosomal dominant disorder that is the most frequent form of short-limb dwarfism. Affected individuals exhibit short stature caused by rhizomelic shortening of the limbs, characteristic facies with frontal bossing and mid-face hypoplasia, exaggerated lumbar lordosis, limitation of elbow extension, genu varum, and trident hand. (online mendelian inheritance in man, http://www.ncbi.nlm.nih.gov/omim, mim#100800, april 20, 2001)
  • Autosomal dominant disorder that is the most frequent form of short-limb dwarfism; a disturbance of epiphyseal chondroblastic growth, causing inadequate enchondral bone formation.
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.
  • Q77.4 is considered exempt from POA reporting.
ICD-10-CM Q77.4 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 Q77.4 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
Code annotations containing back-references to Q77.4:
  • Type 1 Excludes: E34.3
    , E34.3
    , M85.8
    ICD-10-CM Diagnosis Code E34.3

    Short stature due to endocrine disorder

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Constitutional short stature
    • Laron-type short stature
    Type 1 Excludes
    • achondroplastic short stature (Q77.4)
    • hypochondroplastic short stature (Q77.4)
    • nutritional short stature (E45)
    • pituitary short stature (E23.0)
    • progeria (E34.8)
    • renal short stature (N25.0)
    • Russell-Silver syndrome (Q87.19)
    • short-limbed stature with immunodeficiency (D82.2)
    • short stature in specific dysmorphic syndromes - code to syndrome - see Alphabetical Index
    • short stature NOS (R62.52)
    ICD-10-CM Diagnosis Code E34.3

    Short stature due to endocrine disorder

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Constitutional short stature
    • Laron-type short stature
    Type 1 Excludes
    • achondroplastic short stature (Q77.4)
    • hypochondroplastic short stature (Q77.4)
    • nutritional short stature (E45)
    • pituitary short stature (E23.0)
    • progeria (E34.8)
    • renal short stature (N25.0)
    • Russell-Silver syndrome (Q87.19)
    • short-limbed stature with immunodeficiency (D82.2)
    • short stature in specific dysmorphic syndromes - code to syndrome - see Alphabetical Index
    • short stature NOS (R62.52)
    ICD-10-CM Diagnosis Code M85.8

    Other specified disorders of bone density and structure

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Hyperostosis of bones, except skull
    • Osteosclerosis, acquired
    Type 1 Excludes
    • diffuse idiopathic skeletal hyperostosis [DISH] (M48.1)
    • osteosclerosis congenita (Q77.4)
    • osteosclerosis fragilitas (generalista) (Q78.2)
    • osteosclerosis myelofibrosis (D75.81)

Diagnosis Index entries containing back-references to Q77.4:
  • Achondroplasia Q77.4 (osteosclerosis congenita)
  • Chondrodysplasia Q78.9
    ICD-10-CM Diagnosis Code Q78.9

    Osteochondrodysplasia, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Chondrodystrophy NOS
    • Osteodystrophy NOS
    • fetalis Q77.4
  • Chondrogenesis imperfecta Q77.4
  • Dwarfism E34.3
    ICD-10-CM Diagnosis Code E34.3

    Short stature due to endocrine disorder

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Constitutional short stature
    • Laron-type short stature
    Type 1 Excludes
    • achondroplastic short stature (Q77.4)
    • hypochondroplastic short stature (Q77.4)
    • nutritional short stature (E45)
    • pituitary short stature (E23.0)
    • progeria (E34.8)
    • renal short stature (N25.0)
    • Russell-Silver syndrome (Q87.19)
    • short-limbed stature with immunodeficiency (D82.2)
    • short stature in specific dysmorphic syndromes - code to syndrome - see Alphabetical Index
    • short stature NOS (R62.52)
    • achondroplastic Q77.4
    • hypochondroplastic Q77.4
  • Hypochondroplasia Q77.4
  • Osteosclerosis Q78.2
    ICD-10-CM Diagnosis Code Q78.2

    Osteopetrosis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Albers-Schönberg syndrome
    • Osteosclerosis NOS
    • congenita Q77.4

ICD-10-CM Codes Adjacent To Q77.4
Q76.5 Cervical rib
Q76.6 Other congenital malformations of ribs
Q76.7 Congenital malformation of sternum
Q76.8 Other congenital malformations of bony thorax
Q76.9 Congenital malformation of bony thorax, unspecified
Q77 Osteochondrodysplasia with defects of growth of tubular bones and spine
Q77.0 Achondrogenesis
Q77.1 Thanatophoric short stature
Q77.2 Short rib syndrome
Q77.3 Chondrodysplasia punctata
Q77.4 Achondroplasia
Q77.5 Diastrophic dysplasia
Q77.6 Chondroectodermal dysplasia
Q77.7 Spondyloepiphyseal dysplasia
Q77.8 Other osteochondrodysplasia with defects of growth of tubular bones and spine
Q77.9 Osteochondrodysplasia with defects of growth of tubular bones and spine, unspecified
Q78 Other osteochondrodysplasias
Q78.0 Osteogenesis imperfecta
Q78.1 Polyostotic fibrous dysplasia
Q78.2 Osteopetrosis
Q78.3 Progressive diaphyseal dysplasia

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