Q75.021 Coronal craniosynostosis, unilateral

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

Applicable to

• Non-deformational anterior plagiocephaly

Applies from Q75 Other congenital malformations of skull and face bones

Excludes1 (never code together)

• congenital malformation of face NOS (Q18.-)
• congenital malformation syndromes classified to Q87.-
• dentofacial anomalies [including malocclusion] (M26.-)
• musculoskeletal deformities of head and face (Q67.0-Q67.4)
• skull defects associated with congenital anomalies of brain such as:
• anencephaly (Q00.0)
• encephalocele (Q01.-)
• hydrocephalus (Q03.-)
• microcephaly (Q02)

Applies from Q75.02 Coronal craniosynostosis

Excludes1 (never code together)

• dolichocephaly (Q67.2)

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Code annotations containing back-references to Q75.021

Back-references to Q75.02

• Type 1 Excludes: Q67.3 Plagiocephaly ("coronal craniosynostosis (Q75.02-)")

Back-references to Q75

• Type 1 Excludes: M24.3 Pathological dislocation of joint, not elsewhere classified ("congenital dislocation or displacement of joint- see congenital malformations and deformations of the musculoskeletal system (Q65-Q79)")
• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("congenital malformations and deformations of the musculoskeletal system (Q65-Q79)")
• Type 1 Excludes: Q18 Other congenital malformations of face and neck ("congenital malformations of skull and face bones (Q75.-)")

Diagnosis Index entries for Q75.021

• Craniosynostosis › coronal › unilateral
• Plagiocephaly › non-deformational › anterior

Nearby codes

• Q75.001 Craniosynostosis, unspecified type, unilateral
• Q75.002 Craniosynostosis, unspecified type, bilateral
• Q75.009 Craniosynostosis, unspecified
• Q75.01 Sagittal craniosynostosis
• Q75.02 Coronal craniosynostosis
• Q75.021 Coronal craniosynostosis, unilateral (this code)
• Q75.022 Coronal craniosynostosis, bilateral
• Q75.029 Coronal craniosynostosis, unspecified
• Q75.03 Metopic craniosynostosis
• Q75.04 Lambdoid craniosynostosis
• Q75.041 Lambdoid craniosynostosis, unilateral