All ICD10 Codes

Q18

Non-Billable
ChapterQ00–Q99
Rankcategory
Official Description

Other congenital malformations of face and neck

Use a more specific code (10 billable)
Q18.0Sinus, fistula and cyst of branchial cleftQ18.1Preauricular sinus and cystQ18.2Other branchial cleft malformationsQ18.3Webbing of neckQ18.4MacrostomiaQ18.5MicrostomiaQ18.6MacrocheiliaQ18.7MicrocheiliaQ18.8Other specified congenital malformations of face and neckQ18.9Congenital malformation of face and neck, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

CH17 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)

Q10-Q18 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • 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)

Clinical Hierarchy

BillableHas subcodes
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q10-Q18Congenital malformations of eye, ear, face and neck (Q10-Q18)
Q18Other congenital malformations of face and neckNot billable
Q18.0Sinus, fistula and cyst of branchial cleftBillable
Q18.1Preauricular sinus and cystBillable
Q18.2Other branchial cleft malformationsBillable
Q18.3Webbing of neckBillable
Q18.4MacrostomiaBillable
Q18.5MicrostomiaBillable
Q18.6MacrocheiliaBillable
Q18.7MicrocheiliaBillable
Q18.8Other specified congenital malformations of face and neckBillable
Q18.9Congenital malformation of face and neck, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q18:

blockQ10-Q18
Congenital malformations of eye, ear, face and neck (Q10-Q18)
View context instructions
chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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