-
ICD-10-CM Codes
›
-
Q00-Q99
›
-
Q10-Q18
›
-
Q18-
›
-
2023 ICD-10-CM Diagnosis Code Q18.4
2023 ICD-10-CM Diagnosis Code Q18.4
Macrostomia
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
- Q18.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM Q18.4 became effective on October 1, 2022.
- This is the American ICD-10-CM version of Q18.4 - other international versions of ICD-10 Q18.4 may differ.
The following code(s) above
Q18.4 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
Q18.4:
- Q00-Q99
2023 ICD-10-CM Range Q00-Q99
Congenital malformations, deformations and chromosomal abnormalitiesNote- Codes from this chapter are not for use on maternal records
Type 2 Excludes- inborn errors of metabolism (E70-E88)
- Q10-Q18
2023 ICD-10-CM Range Q10-Q18
Congenital malformations of eye, ear, face and neckType 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)
- Q18
ICD-10-CM Diagnosis Code Q18
Other congenital malformations of face and neck
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Type 1 Excludes- cleft lip and cleft palate (Q35-Q37)
- conditions classified to Q67.0-Q67.4
- congenital malformations of skull and face bones (Q75.-)
- cyclopia (Q87.0)
- dentofacial anomalies [including malocclusion] (M26.-)
- malformation syndromes affecting facial appearance (Q87.0)
- persistent thyroglossal duct (Q89.2)
- Greatly exaggerated width of the mouth, resulting from failure of union of the maxillary and mandibular processes, with extension of the oral orifice toward the ear. The defect may be unilateral or bilateral. (Dorland, 27th ed)
Present On AdmissionPOA 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.
- Q18.4 is considered exempt from POA reporting.
ICD-10-CM Q18.4 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 157 Dental and oral diseases with mcc
- 158 Dental and oral diseases with cc
- 159 Dental and oral diseases without cc/mcc
Convert Q18.4 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
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
Code annotations containing back-references to Q18.4:
- Macrostomia Q18.4 (congenital)
- Meloschisis Q18.4
ICD-10-CM Codes Adjacent To Q18.4
Q17.3 Other misshapen 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
Q18.4
Macrostomia
Q18.8 Other specified congenital malformations of face and neck
Q18.9 Congenital malformation of face and neck, unspecified
Q20 Congenital malformations of cardiac chambers and connections
Q20.0 Common arterial trunk
Q20.1 Double outlet right ventricle
Q20.2 Double outlet left ventricle
Q20.3 Discordant ventriculoarterial connection
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
