Q18.8 Other specified congenital malformations of face and neck

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Medial cyst of face and neck
• Medial fistula of face and neck
• Medial sinus of face and neck

Applies from Q18 Other congenital malformations of face and neck

Excludes1 (never code together)

• 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)

MS-DRG index

Defines the logic of DRG(s) 154-156 in MDC 03.

Approximate ICD-9-CM (GEMs)

• 744.89 Other specified congenital anomalies of face and neck

Code annotations containing back-references to Q18.8

Back-references to Q18

• Type 1 Excludes: Q75 Other congenital malformations of skull and face bones ("congenital malformation of face NOS (Q18.-)")

Diagnosis Index entries for Q18.8

• Absence (of) (organ or part) (complete or partial) › chin, congenital
• Absence (of) (organ or part) (complete or partial) › face, specified part NEC
• Absence (of) (organ or part) (complete or partial) › neck, part
• Agenesis › chin
• Agenesis › face › specified part NEC
• Agenesis › neck, part
• Anomaly, anomalous (congenital) (unspecified type) › eyebrow
• Cyst (colloid) (mucous) (simple) (retention) › medial, face and neck
• Deformity › eyebrow (congenital)
• Fistula (cutaneous) › medial, face and neck
• Flattening › lip (congenital)
• Hypoplasia, hypoplastic › face
• Malposition › congenital › facial features
• Sinus › medial, face and neck

Nearby codes

• 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 (this code)
• Q18.9 Congenital malformation of face and neck, unspecified