2020 ICD-10-CM Diagnosis Code Q18

Other congenital malformations of face and neck

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • Q18 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM Q18 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Q18 - other international versions of ICD-10 Q18 may differ.
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 Q18. 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.
  • cleft lip and cleft palate (Q35-Q37
    ICD-10-CM Range Q35-Q37

    Cleft lip and cleft palate

    Type 1 Excludes
    Use Additional
    • code to identify associated malformation of the nose (Q30.2)
    • Q35 Cleft palate
    • Q36 Cleft lip
    • Q37 Cleft palate with cleft lip
    )
  • conditions classified to
    ICD-10-CM Diagnosis Code Q67.0

    Congenital facial asymmetry

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Q67.0-
    ICD-10-CM Diagnosis Code Q67.4

    Other congenital deformities of skull, face and jaw

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital depressions in skull
    • Congenital hemifacial atrophy or hypertrophy
    • Deviation of nasal septum, congenital
    • Squashed or bent nose, congenital
    Type 1 Excludes
    • dentofacial anomalies [including malocclusion] (M26.-)
    • syphilitic saddle nose (A50.5)
    Q67.4
  • congenital malformations of skull and face bones (
    ICD-10-CM Diagnosis Code Q75
    • Q75 Other congenital malformations of skull and f...
      • Q75.0 Craniosynostosis
      • Q75.1 Craniofacial dysostosis
      • Q75.2 Hypertelorism
      • Q75.3 Macrocephaly
      • Q75.4 Mandibulofacial dysostosis
      • Q75.5 Oculomandibular dysostosis
      • Q75.8 Other specified congenital malformations of s...
      • Q75.9 Congenital malformation of skull and face bon...
    Q75.-
    )
  • cyclopia (
    ICD-10-CM Diagnosis Code Q87.0

    Congenital malformation syndromes predominantly affecting facial appearance

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Acrocephalopolysyndactyly
    • Acrocephalosyndactyly [Apert]
    • Cryptophthalmos syndrome
    • Cyclopia
    • Goldenhar syndrome
    • Moebius syndrome
    • Oro-facial-digital syndrome
    • Robin syndrome
    • Whistling face
    Q87.0
    )
  • dentofacial anomalies [including malocclusion] (
    ICD-10-CM Diagnosis Code M26
    • M26 Dentofacial anomalies [including malocclusion...
      • M26.0 Major anomalies of jaw size
        • M26.00 Unspecified anomaly of jaw size
        • M26.01 Maxillary hyperplasia
        • M26.02 Maxillary hypoplasia
        • M26.03 Mandibular hyperplasia
        • M26.04 Mandibular hypoplasia
        • M26.05 Macrogenia
        • M26.06 Microgenia
        • M26.07 Excessive tuberosity of jaw
        • M26.09 Other specified anomalies of jaw size
      • M26.1 Anomalies of jaw-cranial base relationship
        • M26.10 Unspecified anomaly of jaw-cranial base relat...
        • M26.11 Maxillary asymmetry
        • M26.12 Other jaw asymmetry
        • M26.19 Other specified anomalies of jaw-cranial base...
      • M26.2 Anomalies of dental arch relationship
        • M26.20 Unspecified anomaly of dental arch relationsh...
        • M26.21 Malocclusion, Angle's class
        • M26.22 Open occlusal relationship
          • M26.220 Open anterior occlusal relationship
          • M26.221 Open posterior occlusal relationship
        • M26.23 Excessive horizontal overlap
        • M26.24 Reverse articulation
        • M26.25 Anomalies of interarch distance
        • M26.29 Other anomalies of dental arch relationship
      • M26.3 Anomalies of tooth position of fully erupted ...
        • M26.30 Unspecified anomaly of tooth position of full...
        • M26.31 Crowding of fully erupted teeth
        • M26.32 Excessive spacing of fully erupted teeth
        • M26.33 Horizontal displacement of fully erupted toot...
        • M26.34 Vertical displacement of fully erupted tooth ...
        • M26.35 Rotation of fully erupted tooth or teeth
        • M26.36 Insufficient interocclusal distance of fully ...
        • M26.37 Excessive interocclusal distance of fully eru...
        • M26.39 Other anomalies of tooth position of fully er...
      • M26.4 Malocclusion, unspecified
      • M26.5 Dentofacial functional abnormalities
        • M26.50 Dentofacial functional abnormalities, unspeci...
        • M26.51 Abnormal jaw closure
        • M26.52 Limited mandibular range of motion
        • M26.53 Deviation in opening and closing of the mandi...
        • M26.54 Insufficient anterior guidance
        • M26.55 Centric occlusion maximum intercuspation disc...
        • M26.56 Non-working side interference
        • M26.57 Lack of posterior occlusal support
        • M26.59 Other dentofacial functional abnormalities
      • M26.6 Temporomandibular joint disorders
        • M26.60 Temporomandibular joint disorder, unspecified...
          • M26.601 Right temporomandibular joint disorder, unspe...
          • M26.602 Left temporomandibular joint disorder, unspec...
          • M26.603 Bilateral temporomandibular joint disorder, u...
          • M26.609 Unspecified temporomandibular joint disorder,...
        • M26.61 Adhesions and ankylosis of temporomandibular ...
          • M26.611 Adhesions and ankylosis of right temporomandi...
          • M26.612 Adhesions and ankylosis of left temporomandib...
          • M26.613 Adhesions and ankylosis of bilateral temporom...
          • M26.619 Adhesions and ankylosis of temporomandibular ...
        • M26.62 Arthralgia of temporomandibular joint
          • M26.621 Arthralgia of right temporomandibular joint
          • M26.622 Arthralgia of left temporomandibular joint
          • M26.623 Arthralgia of bilateral temporomandibular joi...
          • M26.629 Arthralgia of temporomandibular joint, unspec...
        • M26.63 Articular disc disorder of temporomandibular ...
          • M26.631 Articular disc disorder of right temporomandi...
          • M26.632 Articular disc disorder of left temporomandib...
          • M26.633 Articular disc disorder of bilateral temporom...
          • M26.639 Articular disc disorder of temporomandibular ...
        • M26.69 Other specified disorders of temporomandibula...
      • M26.7 Dental alveolar anomalies
        • M26.70 Unspecified alveolar anomaly
        • M26.71 Alveolar maxillary hyperplasia
        • M26.72 Alveolar mandibular hyperplasia
        • M26.73 Alveolar maxillary hypoplasia
        • M26.74 Alveolar mandibular hypoplasia
        • M26.79 Other specified alveolar anomalies
      • M26.8 Other dentofacial anomalies
        • M26.81 Anterior soft tissue impingement
        • M26.82 Posterior soft tissue impingement
        • M26.89 Other dentofacial anomalies
      • M26.9 Dentofacial anomaly, unspecified
    M26.-
    )
  • malformation syndromes affecting facial appearance (
    ICD-10-CM Diagnosis Code Q87.0

    Congenital malformation syndromes predominantly affecting facial appearance

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Acrocephalopolysyndactyly
    • Acrocephalosyndactyly [Apert]
    • Cryptophthalmos syndrome
    • Cyclopia
    • Goldenhar syndrome
    • Moebius syndrome
    • Oro-facial-digital syndrome
    • Robin syndrome
    • Whistling face
    Q87.0
    )
  • persistent thyroglossal duct (
    ICD-10-CM Diagnosis Code Q89.2

    Congenital malformations of other endocrine glands

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital malformation of parathyroid or thyroid gland
    • Persistent thyroglossal duct
    • Thyroglossal cyst
    Type 1 Excludes
    • congenital goiter (E03.0)
    • congenital hypothyroidism (E03.1)
    Q89.2
    )
The following code(s) above Q18 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 Q18:
  • Q00-Q99
    2020 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
  • Q10-Q18
    2020 ICD-10-CM Range Q10-Q18

    Congenital malformations of eye, ear, face and neck

    Type 2 Excludes
    • cleft lip and cleft palate (Q35-Q37)
    • congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4)
    • congenital malformation of larynx (Q31.-)
    • congenital malformation of lip NEC (Q38.0)
    • congenital malformation of nose (Q30.-)
    • congenital malformation of parathyroid gland (Q89.2)
    • congenital malformation of thyroid gland (Q89.2)
    Congenital malformations of eye, ear, face and neck
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
Code annotations containing back-references to Q18:
  • Type 1 Excludes: Q75
    ICD-10-CM Diagnosis Code Q75

    Other congenital malformations of skull and face bones

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital malformation of face NOS (Q18.-)
    • congenital malformation syndromes classified to Q87.-
    • dentofacial anomalies [including malocclusion] (M26.-)
    • musculoskeletal deformities of head and face (Q67.0-Q67.4)
    • skull defects associated with congenital anomalies of brain such as:
    • anencephaly (Q00.0)
    • encephalocele (Q01.-)
    • hydrocephalus (Q03.-)
    • microcephaly (Q02)
ICD-10-CM Codes Adjacent To Q18
Q16.9 Congenital malformation of ear causing impairment of hearing, unspecified
Q17 Other congenital malformations of ear
Q17.0 Accessory auricle
Q17.1 Macrotia
Q17.2 Microtia
Q17.3 Other misshapen ear
Q17.4 Misplaced ear
Q17.5 Prominent ear
Q17.8 Other specified congenital malformations of ear
Q17.9 Congenital malformation of ear, unspecified
Q18 Other congenital malformations of face and neck
Q18.0 Sinus, fistula and cyst of branchial cleft
Q18.1 Preauricular sinus and cyst
Q18.2 Other branchial cleft malformations
Q18.3 Webbing of neck
Q18.4 Macrostomia
Q18.5 Microstomia
Q18.6 Macrocheilia
Q18.7 Microcheilia
Q18.8 Other specified congenital malformations of face and neck
Q18.9 Congenital malformation of face and neck, unspecified

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