Microstomia
Billable / specificPOA exempt
Q18.5 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes (from Q18)
- Note: Codes from this chapter are not for use on maternal records
Excludes1
Not coded here — never report together with this code.
- cleft lip and cleft palate (Q35-Q37) (from Q18)
- conditions classified to Q67.0-Q67.4 (from Q18)
- congenital malformations of skull and face bones (Q75.-) (from Q18)
- cyclopia (Q87.0) (from Q18)
- dentofacial anomalies [including malocclusion] (M26.-) (from Q18)
- malformation syndromes affecting facial appearance (Q87.0) (from Q18)
- persistent thyroglossal duct (Q89.2) (from Q18)
Excludes2
Not included here — may be reported together when both conditions exist.
- inborn errors of metabolism (E70-E88) (from Q18)
- cleft lip and cleft palate (Q35-Q37) (from Q18)
- congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4) (from Q18)
- congenital malformation of larynx (Q31.-) (from Q18)
- congenital malformation of lip NEC (Q38.0) (from Q18)
- congenital malformation of nose (Q30.-) (from Q18)
- congenital malformation of parathyroid gland (Q89.2) (from Q18)
- congenital malformation of thyroid gland (Q89.2) (from Q18)
Parent code
- Q18Other congenital malformations of face and neckHeader
Related codes
- Q18.0Sinus, fistula and cyst of branchial cleftBillable
- Q18.1Preauricular sinus and cystBillable
- Q18.2Other branchial cleft malformationsBillable
- Q18.3Webbing of neckBillable
- Q18.4MacrostomiaBillable
- Q18.6MacrocheiliaBillable
- Q18.7MicrocheiliaBillable
- Q18.8Other specified congenital malformations of face and neckBillable
- Q18.9Congenital malformation of face and neck, unspecifiedBillable