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Q75.4

Mandibulofacial dysostosis

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 9 never code together
Q75code
Excludes1
  • congenital malformation of face NOS (Q18.-)Q18.-
  • congenital malformation syndromes classified to Q87.-Q87.-
  • dentofacial anomalies [including malocclusion] (M26.-)M26.-
  • musculoskeletal deformities of head and face (Q67.0-Q67.4)Q67.0-Q67.4
  • skull defects associated with congenital anomalies of brain such as:
  • anencephaly (Q00.0)Q00.0
  • encephalocele (Q01.-)Q01.-
  • hydrocephalus (Q03.-)Q03.-
  • microcephaly (Q02)Q02

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Instructional notes 2
Q75.4code
Inclusion terms
  • Franceschetti syndrome
  • Treacher Collins syndrome
Index entries leading here 4
  • Dysostosis
    • mandibulofacial (incomplete) Q75.4
  • Syndrome — see also Disease
    • Franceschetti Q75.4
    • mandibulofacial dysostosis Q75.4
    • Treacher Collins Q75.4
  • Franceschetti-Klein (-Wildervanck) disease or syndrome Q75.4
  • Treacher Collins syndrome Q75.4
Alongside this code 7 same parent — Q75
Q75.0 Craniosynostosis category Q75.1 Craniofacial dysostosis Q75.2 Hypertelorism Q75.3 Macrocephaly Q75.5 Oculomandibular dysostosis Q75.8 Oth congenital malformations of skull and face bones Q75.9 Congenital malformation of skull and face bones, unspecified
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

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This code

Billable
yes
Code set
FY2026
Parent
Q75
Block
Q65-Q79
Siblings
7

Present FY2024–FY2027.